The goal is to find the angle at each vertex. My current computation which started with the clue I got here, isn't giving me the expected vertex angle values. By expected values, I mean angles at vertex measured using ArcMap10 COGO tool. inFC (input feature class) are polylines which were a result of polygon split operation. I am also not getting it right with regards to pushing those angle values to the field "Angle" Alternate approaches are welcome. # get the vertex angle def getVertexAngle ( inFC ) : arcpy . AddField_management ( inFC , "Angle" , "DOUBLE" ) pointer = 0 with arcpy . da . UpdateCursor ( inFC , 'Angle' ) as uCur : with arcpy . da . SearchCursor ( inFC , 'SHAPE@' ) as sCur : for row in sCur : orient = [ ] Geom = row [ 0 ] Parts = range ( Geom . partCount ) for part in Parts : currPart = Geom . getPart ( part ) pointCount = currPart . count qPointsRange = range ( 1 , pointCount - 1 ) for point in qPointsRange : currPnt = currPart . getObject ( point ) X = currPnt . X Y = currPnt . Y prevPnt = currPart . getObject ( point - 1 ) nxtPnt = currPart . getObject ( point + 1 ) radian = math . atan2 ( Y - prevPnt . Y , X - prevPnt . X ) - math . atan2 ( nxtPnt . Y - prevPnt . Y , nxtPnt . X - prevPnt . X ) degrees = 90 - math . degrees ( math . radians ( radian ) ) orient . append ( degrees ) print degrees print "orientations are: " , orient return orient

This will return either interior or exterior angles. I didn't know what you want to do with the list, so this example simply prints the list of interior angles for a featureclass with 6 polygons. import numpy as np import arcpy def _poly_arr_ ( poly ) : """Return coordinates of nested objects.""" def _split_ ( part ) : yield [ ( p . X , p . Y ) for p in part if p ] # ---- arrs = [ ] for part in poly : out = [ ] w = np . where ( np . isin ( part , None , invert = False ) ) [ 0 ] bits = np . split ( part , w ) for i in bits : sub = _split_ ( i ) out . append ( np . array ( * sub ) . squeeze ( ) ) arrs . append ( np . asarray ( out ) . squeeze ( ) ) return np . asarray ( arrs ) def _angles_ ( a , inside = True , in_deg = True ) : """Worker for Geo `polygon_angles` and `polyline_angles`. Parameters ---------- inside : boolean True, for interior angles. in_deg : boolean True for degrees, False for radians. """ # ---- def _x_ ( a ) : """Cross product. see npg_helpers as well.""" ba = a - np . concatenate ( ( a [ - 1 , None ] , a [ : - 1 ] ) , axis = 0 ) bc = a - np . concatenate ( ( a [ 1 : ] , a [ 0 , None ] ) , axis = 0 ) return np . cross ( ba , bc ) , ba , bc # ---- if np . allclose ( a [ 0 ] , a [ - 1 ] ) : # closed loop, remove dupl. a = a [ : - 1 ] cr , ba , bc = _x_ ( a ) dt = np . einsum ( 'ij,ij->i' , ba , bc ) ang = np . arctan2 ( cr , dt ) TwoPI = np . pi * 2 . if inside : angles = np . where ( ang 0 , ang + TwoPI , ang ) else : angles = np . where ( ang > 0 , TwoPI - ang , ang ) if in_deg : angles = np . degrees ( angles ) return angles # ----- Change the line below ******************************* in_fc = r "C:\Folder_to_your\shapefile.shp" # ---- not tested with arcpy . da . SearchCursor ( in_fc , "SHAPE@" ) as cur : for row in cur : geom = row [ 0 ] arr = _poly_arr_ ( geom ) . squeeze ( ) ang = _angles_ ( arr , inside = True , in_deg = True ) print ( "angles\n{}" . format ( ang ) ) Results angles [ 90 . 90 . 90 . 90 . ] angles [ 36.86989765 63.43494882 34.69515353 225 . ] angles [ 34.69515353 225 . 36.86989765 63.43494882 ] angles [ 63.43494882 53.13010235 63.43494882 ] angles [ 90 . 270 . 90 . 90 . 270 . 90 . 90 . 270 . 90 . 90 . 270 . 90 . ] angles [ 90 . 90 . 90 . 90 . 270 . 90 . ] The featureclass

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polygon vertex angle arcpy

AdebayoIshola

The goal is to find the angle at each vertex. My current computation which started with the clue I got here, isn't giving me the expected vertex angle values. By expected values, I mean angles at vertex measured using ArcMap10 COGO tool.

inFC (input feature class) are polylines which were a result of polygon split operation.

I am also not getting it right with regards to pushing those angle values to the field "Angle"

Alternate approaches are welcome.

<SPAN class="comment token"># get the vertex angle</SPAN>
<SPAN class="keyword token">def</SPAN> <SPAN class="token function">getVertexAngle</SPAN><SPAN class="punctuation token">(</SPAN>inFC<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">:</SPAN>

    arcpy<SPAN class="punctuation token">.</SPAN>AddField_management<SPAN class="punctuation token">(</SPAN>inFC<SPAN class="punctuation token">,</SPAN><SPAN class="string token">"Angle"</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="string token">"DOUBLE"</SPAN><SPAN class="punctuation token">)</SPAN>

    pointer <SPAN class="operator token">=</SPAN> <SPAN class="number token">0</SPAN>

    <SPAN class="keyword token">with</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>da<SPAN class="punctuation token">.</SPAN>UpdateCursor<SPAN class="punctuation token">(</SPAN>inFC<SPAN class="punctuation token">,</SPAN> <SPAN class="string token">'Angle'</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">as</SPAN> uCur<SPAN class="punctuation token">:</SPAN>
        <SPAN class="keyword token">with</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>da<SPAN class="punctuation token">.</SPAN>SearchCursor<SPAN class="punctuation token">(</SPAN>inFC<SPAN class="punctuation token">,</SPAN> <SPAN class="string token">'SHAPE@'</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">as</SPAN> sCur<SPAN class="punctuation token">:</SPAN>
            <SPAN class="keyword token">for</SPAN> row <SPAN class="keyword token">in</SPAN> sCur<SPAN class="punctuation token">:</SPAN>
                orient <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">]</SPAN>

                Geom <SPAN class="operator token">=</SPAN> row<SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN>
                Parts <SPAN class="operator token">=</SPAN> range<SPAN class="punctuation token">(</SPAN>Geom<SPAN class="punctuation token">.</SPAN>partCount<SPAN class="punctuation token">)</SPAN>

                <SPAN class="keyword token">for</SPAN> part <SPAN class="keyword token">in</SPAN> Parts<SPAN class="punctuation token">:</SPAN>
                    currPart <SPAN class="operator token">=</SPAN> Geom<SPAN class="punctuation token">.</SPAN>getPart<SPAN class="punctuation token">(</SPAN>part<SPAN class="punctuation token">)</SPAN>
                    pointCount <SPAN class="operator token">=</SPAN> currPart<SPAN class="punctuation token">.</SPAN>count

                    qPointsRange <SPAN class="operator token">=</SPAN> range<SPAN class="punctuation token">(</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">,</SPAN> pointCount <SPAN class="operator token">-</SPAN> <SPAN class="number token">1</SPAN><SPAN class="punctuation token">)</SPAN>

                    <SPAN class="keyword token">for</SPAN> point <SPAN class="keyword token">in</SPAN> qPointsRange<SPAN class="punctuation token">:</SPAN>
                        currPnt <SPAN class="operator token">=</SPAN> currPart<SPAN class="punctuation token">.</SPAN>getObject<SPAN class="punctuation token">(</SPAN>point<SPAN class="punctuation token">)</SPAN>
                        X <SPAN class="operator token">=</SPAN> currPnt<SPAN class="punctuation token">.</SPAN>X
                        Y <SPAN class="operator token">=</SPAN> currPnt<SPAN class="punctuation token">.</SPAN>Y

                        prevPnt <SPAN class="operator token">=</SPAN> currPart<SPAN class="punctuation token">.</SPAN>getObject<SPAN class="punctuation token">(</SPAN>point <SPAN class="operator token">-</SPAN> <SPAN class="number token">1</SPAN><SPAN class="punctuation token">)</SPAN>
                        nxtPnt <SPAN class="operator token">=</SPAN> currPart<SPAN class="punctuation token">.</SPAN>getObject<SPAN class="punctuation token">(</SPAN>point <SPAN class="operator token">+</SPAN> <SPAN class="number token">1</SPAN><SPAN class="punctuation token">)</SPAN>

                        radian <SPAN class="operator token">=</SPAN> math<SPAN class="punctuation token">.</SPAN>atan2<SPAN class="punctuation token">(</SPAN>Y <SPAN class="operator token">-</SPAN> prevPnt<SPAN class="punctuation token">.</SPAN>Y<SPAN class="punctuation token">,</SPAN> X <SPAN class="operator token">-</SPAN> prevPnt<SPAN class="punctuation token">.</SPAN>X<SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">-</SPAN> math<SPAN class="punctuation token">.</SPAN>atan2<SPAN class="punctuation token">(</SPAN>nxtPnt<SPAN class="punctuation token">.</SPAN>Y <SPAN class="operator token">-</SPAN> prevPnt<SPAN class="punctuation token">.</SPAN>Y<SPAN class="punctuation token">,</SPAN> nxtPnt<SPAN class="punctuation token">.</SPAN>X <SPAN class="operator token">-</SPAN> prevPnt<SPAN class="punctuation token">.</SPAN>X<SPAN class="punctuation token">)</SPAN>

                        degrees <SPAN class="operator token">=</SPAN> <SPAN class="number token">90</SPAN> <SPAN class="operator token">-</SPAN> math<SPAN class="punctuation token">.</SPAN>degrees <SPAN class="punctuation token">(</SPAN> math<SPAN class="punctuation token">.</SPAN>radians<SPAN class="punctuation token">(</SPAN> radian <SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">)</SPAN>
                        orient<SPAN class="punctuation token">.</SPAN>append<SPAN class="punctuation token">(</SPAN>degrees<SPAN class="punctuation token">)</SPAN>

                        <SPAN class="keyword token">print</SPAN> degrees

    <SPAN class="keyword token">print</SPAN> <SPAN class="string token">"orientations are: "</SPAN><SPAN class="punctuation token">,</SPAN> orient
    <SPAN class="keyword token">return</SPAN> orient<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

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DanPatterson_Retired

This will return either interior or exterior angles.

I didn't know what you want to do with the list, so this example simply prints the list of interior angles for a featureclass with 6 polygons.

<SPAN class="keyword token">import</SPAN> numpy <SPAN class="keyword token">as</SPAN> np
<SPAN class="keyword token">import</SPAN> arcpy

<SPAN class="keyword token">def</SPAN> <SPAN class="token function">_poly_arr_</SPAN><SPAN class="punctuation token">(</SPAN>poly<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">:</SPAN>
    <SPAN class="string token">"""Return coordinates of nested objects."""</SPAN>
    <SPAN class="keyword token">def</SPAN> <SPAN class="token function">_split_</SPAN><SPAN class="punctuation token">(</SPAN>part<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">:</SPAN>
        <SPAN class="keyword token">yield</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">(</SPAN>p<SPAN class="punctuation token">.</SPAN>X<SPAN class="punctuation token">,</SPAN> p<SPAN class="punctuation token">.</SPAN>Y<SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">for</SPAN> p <SPAN class="keyword token">in</SPAN> part <SPAN class="keyword token">if</SPAN> p<SPAN class="punctuation token">]</SPAN>
    <SPAN class="comment token"># ----</SPAN>
    arrs <SPAN class="operator token">=</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">]</SPAN>
    <SPAN class="keyword token">for</SPAN> part <SPAN class="keyword token">in</SPAN> poly<SPAN class="punctuation token">:</SPAN>
        out <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">]</SPAN>
        w <SPAN class="operator token">=</SPAN> np<SPAN class="punctuation token">.</SPAN>where<SPAN class="punctuation token">(</SPAN>np<SPAN class="punctuation token">.</SPAN>isin<SPAN class="punctuation token">(</SPAN>part<SPAN class="punctuation token">,</SPAN> None<SPAN class="punctuation token">,</SPAN> invert<SPAN class="operator token">=</SPAN><SPAN class="token boolean">False</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN>
        bits <SPAN class="operator token">=</SPAN> np<SPAN class="punctuation token">.</SPAN>split<SPAN class="punctuation token">(</SPAN>part<SPAN class="punctuation token">,</SPAN> w<SPAN class="punctuation token">)</SPAN>
        <SPAN class="keyword token">for</SPAN> i <SPAN class="keyword token">in</SPAN> bits<SPAN class="punctuation token">:</SPAN>
            sub <SPAN class="operator token">=</SPAN> _split_<SPAN class="punctuation token">(</SPAN>i<SPAN class="punctuation token">)</SPAN>
            out<SPAN class="punctuation token">.</SPAN>append<SPAN class="punctuation token">(</SPAN>np<SPAN class="punctuation token">.</SPAN>array<SPAN class="punctuation token">(</SPAN><SPAN class="operator token">*</SPAN>sub<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN>squeeze<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN>
        arrs<SPAN class="punctuation token">.</SPAN>append<SPAN class="punctuation token">(</SPAN>np<SPAN class="punctuation token">.</SPAN>asarray<SPAN class="punctuation token">(</SPAN>out<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN>squeeze<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN>
    <SPAN class="keyword token">return</SPAN> np<SPAN class="punctuation token">.</SPAN>asarray<SPAN class="punctuation token">(</SPAN>arrs<SPAN class="punctuation token">)</SPAN>

<SPAN class="keyword token">def</SPAN> <SPAN class="token function">_angles_</SPAN><SPAN class="punctuation token">(</SPAN>a<SPAN class="punctuation token">,</SPAN> inside<SPAN class="operator token">=</SPAN><SPAN class="token boolean">True</SPAN><SPAN class="punctuation token">,</SPAN> in_deg<SPAN class="operator token">=</SPAN><SPAN class="token boolean">True</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">:</SPAN>
    <SPAN class="string token">"""Worker for Geo `polygon_angles` and `polyline_angles`.

    Parameters
    ----------
    inside : boolean
        True, for interior angles.
    in_deg : boolean
        True for degrees, False for radians.
    """</SPAN>
    <SPAN class="comment token"># ----</SPAN>
    <SPAN class="keyword token">def</SPAN> <SPAN class="token function">_x_</SPAN><SPAN class="punctuation token">(</SPAN>a<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">:</SPAN>
        <SPAN class="string token">"""Cross product.  see npg_helpers as well."""</SPAN>
        ba <SPAN class="operator token">=</SPAN> a <SPAN class="operator token">-</SPAN> np<SPAN class="punctuation token">.</SPAN>concatenate<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">(</SPAN>a<SPAN class="punctuation token">[</SPAN><SPAN class="operator token">-</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">,</SPAN> None<SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">,</SPAN> a<SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">:</SPAN><SPAN class="operator token">-</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">,</SPAN> axis<SPAN class="operator token">=</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">)</SPAN>
        bc <SPAN class="operator token">=</SPAN> a <SPAN class="operator token">-</SPAN> np<SPAN class="punctuation token">.</SPAN>concatenate<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">(</SPAN>a<SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">:</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">,</SPAN> a<SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">,</SPAN> None<SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">,</SPAN> axis<SPAN class="operator token">=</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">)</SPAN>
        <SPAN class="keyword token">return</SPAN> np<SPAN class="punctuation token">.</SPAN>cross<SPAN class="punctuation token">(</SPAN>ba<SPAN class="punctuation token">,</SPAN> bc<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">,</SPAN> ba<SPAN class="punctuation token">,</SPAN> bc
    <SPAN class="comment token"># ----</SPAN>
    <SPAN class="keyword token">if</SPAN> np<SPAN class="punctuation token">.</SPAN>allclose<SPAN class="punctuation token">(</SPAN>a<SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">,</SPAN> a<SPAN class="punctuation token">[</SPAN><SPAN class="operator token">-</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">:</SPAN>                 <SPAN class="comment token"># closed loop, remove dupl.</SPAN>
        a <SPAN class="operator token">=</SPAN> a<SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">:</SPAN><SPAN class="operator token">-</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN>
    cr<SPAN class="punctuation token">,</SPAN> ba<SPAN class="punctuation token">,</SPAN> bc <SPAN class="operator token">=</SPAN> _x_<SPAN class="punctuation token">(</SPAN>a<SPAN class="punctuation token">)</SPAN>
    dt <SPAN class="operator token">=</SPAN> np<SPAN class="punctuation token">.</SPAN>einsum<SPAN class="punctuation token">(</SPAN><SPAN class="string token">'ij,ij->i'</SPAN><SPAN class="punctuation token">,</SPAN> ba<SPAN class="punctuation token">,</SPAN> bc<SPAN class="punctuation token">)</SPAN>
    ang <SPAN class="operator token">=</SPAN> np<SPAN class="punctuation token">.</SPAN>arctan2<SPAN class="punctuation token">(</SPAN>cr<SPAN class="punctuation token">,</SPAN> dt<SPAN class="punctuation token">)</SPAN>
    TwoPI <SPAN class="operator token">=</SPAN> np<SPAN class="punctuation token">.</SPAN>pi <SPAN class="operator token">*</SPAN> <SPAN class="number token">2</SPAN><SPAN class="punctuation token">.</SPAN>
    <SPAN class="keyword token">if</SPAN> inside<SPAN class="punctuation token">:</SPAN>
        angles <SPAN class="operator token">=</SPAN> np<SPAN class="punctuation token">.</SPAN>where<SPAN class="punctuation token">(</SPAN>ang <SPAN class="operator token"><</SPAN> <SPAN class="number token">0</SPAN><SPAN class="punctuation token">,</SPAN> ang <SPAN class="operator token">+</SPAN> TwoPI<SPAN class="punctuation token">,</SPAN> ang<SPAN class="punctuation token">)</SPAN>
    <SPAN class="keyword token">else</SPAN><SPAN class="punctuation token">:</SPAN>
        angles <SPAN class="operator token">=</SPAN> np<SPAN class="punctuation token">.</SPAN>where<SPAN class="punctuation token">(</SPAN>ang <SPAN class="operator token">></SPAN> <SPAN class="number token">0</SPAN><SPAN class="punctuation token">,</SPAN> TwoPI <SPAN class="operator token">-</SPAN> ang<SPAN class="punctuation token">,</SPAN> ang<SPAN class="punctuation token">)</SPAN>
    <SPAN class="keyword token">if</SPAN> in_deg<SPAN class="punctuation token">:</SPAN>
        angles <SPAN class="operator token">=</SPAN> np<SPAN class="punctuation token">.</SPAN>degrees<SPAN class="punctuation token">(</SPAN>angles<SPAN class="punctuation token">)</SPAN>
    <SPAN class="keyword token">return</SPAN> angles


<SPAN class="comment token"># ----- Change the line below *******************************</SPAN>
in_fc <SPAN class="operator token">=</SPAN> r<SPAN class="string token">"C:\Folder_to_your\shapefile.shp"</SPAN>  <SPAN class="comment token"># ---- not tested</SPAN>

<SPAN class="keyword token">with</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>da<SPAN class="punctuation token">.</SPAN>SearchCursor<SPAN class="punctuation token">(</SPAN>in_fc<SPAN class="punctuation token">,</SPAN> <SPAN class="string token">"SHAPE@"</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">as</SPAN> cur<SPAN class="punctuation token">:</SPAN>
    <SPAN class="keyword token">for</SPAN> row <SPAN class="keyword token">in</SPAN> cur<SPAN class="punctuation token">:</SPAN>
        geom <SPAN class="operator token">=</SPAN> row<SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN>
        arr <SPAN class="operator token">=</SPAN> _poly_arr_<SPAN class="punctuation token">(</SPAN>geom<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN>squeeze<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN>
        ang <SPAN class="operator token">=</SPAN> _angles_<SPAN class="punctuation token">(</SPAN>arr<SPAN class="punctuation token">,</SPAN> inside<SPAN class="operator token">=</SPAN><SPAN class="token boolean">True</SPAN><SPAN class="punctuation token">,</SPAN> in_deg<SPAN class="operator token">=</SPAN><SPAN class="token boolean">True</SPAN><SPAN class="punctuation token">)</SPAN>
        <SPAN class="keyword token">print</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token">"angles\n{}"</SPAN><SPAN class="punctuation token">.</SPAN>format<SPAN class="punctuation token">(</SPAN>ang<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN>

‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Results

angles
<SPAN class="punctuation token">[</SPAN><SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN> <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN> <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN> <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">]</SPAN>
angles
<SPAN class="punctuation token">[</SPAN> <SPAN class="number token">36.86989765</SPAN>  <SPAN class="number token">63.43494882</SPAN>  <SPAN class="number token">34.69515353</SPAN> <SPAN class="number token">225</SPAN><SPAN class="punctuation token">.</SPAN>        <SPAN class="punctuation token">]</SPAN>
angles
<SPAN class="punctuation token">[</SPAN> <SPAN class="number token">34.69515353</SPAN> <SPAN class="number token">225</SPAN><SPAN class="punctuation token">.</SPAN>          <SPAN class="number token">36.86989765</SPAN>  <SPAN class="number token">63.43494882</SPAN><SPAN class="punctuation token">]</SPAN>
angles
<SPAN class="punctuation token">[</SPAN><SPAN class="number token">63.43494882</SPAN> <SPAN class="number token">53.13010235</SPAN> <SPAN class="number token">63.43494882</SPAN><SPAN class="punctuation token">]</SPAN>
angles
<SPAN class="punctuation token">[</SPAN> <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN> <SPAN class="number token">270</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN> <SPAN class="number token">270</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN> <SPAN class="number token">270</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN> <SPAN class="number token">270</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">]</SPAN>
angles
<SPAN class="punctuation token">[</SPAN> <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN> <SPAN class="number token">270</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

The featureclass

All comments

AdebayoIshola

Thank you, Dan. To answer what the purpose is, I want to know the values of each polygon vertex and based on the value of inaccuracies with respect to expected values, I will be moving each side of the polygon (split into segments) to the expected values.

For example, for corners which should be 90°, and I get 89.83°, I will need to rotate the line segment. So, my current question above is just the start step I will be needing.

I will implement your suggestion above and revert once on my computer. Thank you!

DanPatterson_Retired

I edited my original post with a fuller example.

AdebayoIshola

Thank you Dan. Currently not on my computer but will try it out. However, how do I work with this with an input shapefile? A bit unclear on how to use.

DanPatterson_Retired

This will return either interior or exterior angles.

I didn't know what you want to do with the list, so this example simply prints the list of interior angles for a featureclass with 6 polygons.

<SPAN class="keyword token">import</SPAN> numpy <SPAN class="keyword token">as</SPAN> np
<SPAN class="keyword token">import</SPAN> arcpy

<SPAN class="keyword token">def</SPAN> <SPAN class="token function">_poly_arr_</SPAN><SPAN class="punctuation token">(</SPAN>poly<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">:</SPAN>
    <SPAN class="string token">"""Return coordinates of nested objects."""</SPAN>
    <SPAN class="keyword token">def</SPAN> <SPAN class="token function">_split_</SPAN><SPAN class="punctuation token">(</SPAN>part<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">:</SPAN>
        <SPAN class="keyword token">yield</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">(</SPAN>p<SPAN class="punctuation token">.</SPAN>X<SPAN class="punctuation token">,</SPAN> p<SPAN class="punctuation token">.</SPAN>Y<SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">for</SPAN> p <SPAN class="keyword token">in</SPAN> part <SPAN class="keyword token">if</SPAN> p<SPAN class="punctuation token">]</SPAN>
    <SPAN class="comment token"># ----</SPAN>
    arrs <SPAN class="operator token">=</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">]</SPAN>
    <SPAN class="keyword token">for</SPAN> part <SPAN class="keyword token">in</SPAN> poly<SPAN class="punctuation token">:</SPAN>
        out <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">]</SPAN>
        w <SPAN class="operator token">=</SPAN> np<SPAN class="punctuation token">.</SPAN>where<SPAN class="punctuation token">(</SPAN>np<SPAN class="punctuation token">.</SPAN>isin<SPAN class="punctuation token">(</SPAN>part<SPAN class="punctuation token">,</SPAN> None<SPAN class="punctuation token">,</SPAN> invert<SPAN class="operator token">=</SPAN><SPAN class="token boolean">False</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN>
        bits <SPAN class="operator token">=</SPAN> np<SPAN class="punctuation token">.</SPAN>split<SPAN class="punctuation token">(</SPAN>part<SPAN class="punctuation token">,</SPAN> w<SPAN class="punctuation token">)</SPAN>
        <SPAN class="keyword token">for</SPAN> i <SPAN class="keyword token">in</SPAN> bits<SPAN class="punctuation token">:</SPAN>
            sub <SPAN class="operator token">=</SPAN> _split_<SPAN class="punctuation token">(</SPAN>i<SPAN class="punctuation token">)</SPAN>
            out<SPAN class="punctuation token">.</SPAN>append<SPAN class="punctuation token">(</SPAN>np<SPAN class="punctuation token">.</SPAN>array<SPAN class="punctuation token">(</SPAN><SPAN class="operator token">*</SPAN>sub<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN>squeeze<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN>
        arrs<SPAN class="punctuation token">.</SPAN>append<SPAN class="punctuation token">(</SPAN>np<SPAN class="punctuation token">.</SPAN>asarray<SPAN class="punctuation token">(</SPAN>out<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN>squeeze<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN>
    <SPAN class="keyword token">return</SPAN> np<SPAN class="punctuation token">.</SPAN>asarray<SPAN class="punctuation token">(</SPAN>arrs<SPAN class="punctuation token">)</SPAN>

<SPAN class="keyword token">def</SPAN> <SPAN class="token function">_angles_</SPAN><SPAN class="punctuation token">(</SPAN>a<SPAN class="punctuation token">,</SPAN> inside<SPAN class="operator token">=</SPAN><SPAN class="token boolean">True</SPAN><SPAN class="punctuation token">,</SPAN> in_deg<SPAN class="operator token">=</SPAN><SPAN class="token boolean">True</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">:</SPAN>
    <SPAN class="string token">"""Worker for Geo `polygon_angles` and `polyline_angles`.

    Parameters
    ----------
    inside : boolean
        True, for interior angles.
    in_deg : boolean
        True for degrees, False for radians.
    """</SPAN>
    <SPAN class="comment token"># ----</SPAN>
    <SPAN class="keyword token">def</SPAN> <SPAN class="token function">_x_</SPAN><SPAN class="punctuation token">(</SPAN>a<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">:</SPAN>
        <SPAN class="string token">"""Cross product.  see npg_helpers as well."""</SPAN>
        ba <SPAN class="operator token">=</SPAN> a <SPAN class="operator token">-</SPAN> np<SPAN class="punctuation token">.</SPAN>concatenate<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">(</SPAN>a<SPAN class="punctuation token">[</SPAN><SPAN class="operator token">-</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">,</SPAN> None<SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">,</SPAN> a<SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">:</SPAN><SPAN class="operator token">-</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">,</SPAN> axis<SPAN class="operator token">=</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">)</SPAN>
        bc <SPAN class="operator token">=</SPAN> a <SPAN class="operator token">-</SPAN> np<SPAN class="punctuation token">.</SPAN>concatenate<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">(</SPAN>a<SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">:</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">,</SPAN> a<SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">,</SPAN> None<SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">,</SPAN> axis<SPAN class="operator token">=</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">)</SPAN>
        <SPAN class="keyword token">return</SPAN> np<SPAN class="punctuation token">.</SPAN>cross<SPAN class="punctuation token">(</SPAN>ba<SPAN class="punctuation token">,</SPAN> bc<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">,</SPAN> ba<SPAN class="punctuation token">,</SPAN> bc
    <SPAN class="comment token"># ----</SPAN>
    <SPAN class="keyword token">if</SPAN> np<SPAN class="punctuation token">.</SPAN>allclose<SPAN class="punctuation token">(</SPAN>a<SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">,</SPAN> a<SPAN class="punctuation token">[</SPAN><SPAN class="operator token">-</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">:</SPAN>                 <SPAN class="comment token"># closed loop, remove dupl.</SPAN>
        a <SPAN class="operator token">=</SPAN> a<SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">:</SPAN><SPAN class="operator token">-</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN>
    cr<SPAN class="punctuation token">,</SPAN> ba<SPAN class="punctuation token">,</SPAN> bc <SPAN class="operator token">=</SPAN> _x_<SPAN class="punctuation token">(</SPAN>a<SPAN class="punctuation token">)</SPAN>
    dt <SPAN class="operator token">=</SPAN> np<SPAN class="punctuation token">.</SPAN>einsum<SPAN class="punctuation token">(</SPAN><SPAN class="string token">'ij,ij->i'</SPAN><SPAN class="punctuation token">,</SPAN> ba<SPAN class="punctuation token">,</SPAN> bc<SPAN class="punctuation token">)</SPAN>
    ang <SPAN class="operator token">=</SPAN> np<SPAN class="punctuation token">.</SPAN>arctan2<SPAN class="punctuation token">(</SPAN>cr<SPAN class="punctuation token">,</SPAN> dt<SPAN class="punctuation token">)</SPAN>
    TwoPI <SPAN class="operator token">=</SPAN> np<SPAN class="punctuation token">.</SPAN>pi <SPAN class="operator token">*</SPAN> <SPAN class="number token">2</SPAN><SPAN class="punctuation token">.</SPAN>
    <SPAN class="keyword token">if</SPAN> inside<SPAN class="punctuation token">:</SPAN>
        angles <SPAN class="operator token">=</SPAN> np<SPAN class="punctuation token">.</SPAN>where<SPAN class="punctuation token">(</SPAN>ang <SPAN class="operator token"><</SPAN> <SPAN class="number token">0</SPAN><SPAN class="punctuation token">,</SPAN> ang <SPAN class="operator token">+</SPAN> TwoPI<SPAN class="punctuation token">,</SPAN> ang<SPAN class="punctuation token">)</SPAN>
    <SPAN class="keyword token">else</SPAN><SPAN class="punctuation token">:</SPAN>
        angles <SPAN class="operator token">=</SPAN> np<SPAN class="punctuation token">.</SPAN>where<SPAN class="punctuation token">(</SPAN>ang <SPAN class="operator token">></SPAN> <SPAN class="number token">0</SPAN><SPAN class="punctuation token">,</SPAN> TwoPI <SPAN class="operator token">-</SPAN> ang<SPAN class="punctuation token">,</SPAN> ang<SPAN class="punctuation token">)</SPAN>
    <SPAN class="keyword token">if</SPAN> in_deg<SPAN class="punctuation token">:</SPAN>
        angles <SPAN class="operator token">=</SPAN> np<SPAN class="punctuation token">.</SPAN>degrees<SPAN class="punctuation token">(</SPAN>angles<SPAN class="punctuation token">)</SPAN>
    <SPAN class="keyword token">return</SPAN> angles


<SPAN class="comment token"># ----- Change the line below *******************************</SPAN>
in_fc <SPAN class="operator token">=</SPAN> r<SPAN class="string token">"C:\Folder_to_your\shapefile.shp"</SPAN>  <SPAN class="comment token"># ---- not tested</SPAN>

<SPAN class="keyword token">with</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>da<SPAN class="punctuation token">.</SPAN>SearchCursor<SPAN class="punctuation token">(</SPAN>in_fc<SPAN class="punctuation token">,</SPAN> <SPAN class="string token">"SHAPE@"</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">as</SPAN> cur<SPAN class="punctuation token">:</SPAN>
    <SPAN class="keyword token">for</SPAN> row <SPAN class="keyword token">in</SPAN> cur<SPAN class="punctuation token">:</SPAN>
        geom <SPAN class="operator token">=</SPAN> row<SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN>
        arr <SPAN class="operator token">=</SPAN> _poly_arr_<SPAN class="punctuation token">(</SPAN>geom<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN>squeeze<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN>
        ang <SPAN class="operator token">=</SPAN> _angles_<SPAN class="punctuation token">(</SPAN>arr<SPAN class="punctuation token">,</SPAN> inside<SPAN class="operator token">=</SPAN><SPAN class="token boolean">True</SPAN><SPAN class="punctuation token">,</SPAN> in_deg<SPAN class="operator token">=</SPAN><SPAN class="token boolean">True</SPAN><SPAN class="punctuation token">)</SPAN>
        <SPAN class="keyword token">print</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token">"angles\n{}"</SPAN><SPAN class="punctuation token">.</SPAN>format<SPAN class="punctuation token">(</SPAN>ang<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN>

‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Results

angles
<SPAN class="punctuation token">[</SPAN><SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN> <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN> <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN> <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">]</SPAN>
angles
<SPAN class="punctuation token">[</SPAN> <SPAN class="number token">36.86989765</SPAN>  <SPAN class="number token">63.43494882</SPAN>  <SPAN class="number token">34.69515353</SPAN> <SPAN class="number token">225</SPAN><SPAN class="punctuation token">.</SPAN>        <SPAN class="punctuation token">]</SPAN>
angles
<SPAN class="punctuation token">[</SPAN> <SPAN class="number token">34.69515353</SPAN> <SPAN class="number token">225</SPAN><SPAN class="punctuation token">.</SPAN>          <SPAN class="number token">36.86989765</SPAN>  <SPAN class="number token">63.43494882</SPAN><SPAN class="punctuation token">]</SPAN>
angles
<SPAN class="punctuation token">[</SPAN><SPAN class="number token">63.43494882</SPAN> <SPAN class="number token">53.13010235</SPAN> <SPAN class="number token">63.43494882</SPAN><SPAN class="punctuation token">]</SPAN>
angles
<SPAN class="punctuation token">[</SPAN> <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN> <SPAN class="number token">270</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN> <SPAN class="number token">270</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN> <SPAN class="number token">270</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN> <SPAN class="number token">270</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">]</SPAN>
angles
<SPAN class="punctuation token">[</SPAN> <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN> <SPAN class="number token">270</SPAN><SPAN class="punctuation token">.</SPAN>  <SPAN class="number token">90</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

The featureclass

AdebayoIshola

Thank you for this Jeremy. This indeed computes vertex angle but I was looking for a solution for a closed geometry (Polygon) as this is the major issue for me.

Jeremy_Moore

I came across a post that sounded similar to your needs and it looked promising.

https://community.esri.com/thread/19876

Hope this helps

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