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arcpy.Polygon Object and distanceTo() - Methode

BernhardEhrminger

I observed, that calling the distanceTo - Method on Polygons containing circular Arcs can cause python.exe to crash without throwing a exception.

After processing (linearizing the arcs) the polygon featureclass with:

arcpy.Densify_edit(in_features='in_Memory/fc', densification_method='OFFSET', max_deviation=0.001)

it is possible to process the featureclass with "distanceTo" without problems.

I would like to know if this is a bug or a feature? Are there other options of circumventing the problem?

Thank you Bernhard

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Accepted answers

bixb0012

Try the following in a standalone Python window, what do you get?

<SPAN class="operator token">>></SPAN><SPAN class="operator token">></SPAN> <SPAN class="keyword token">import</SPAN> arcpy
<SPAN class="operator token">>></SPAN><SPAN class="operator token">></SPAN> esri_json <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">{</SPAN>
<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="string token">"curvePaths"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">[</SPAN>
<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="number token">5</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">,</SPAN>
<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="punctuation token">{</SPAN><SPAN class="string token">"c"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">7</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="number token">3</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="number token">6</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">}</SPAN>
<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">,</SPAN>
<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="string token">"spatialReference"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="punctuation token">{</SPAN><SPAN class="string token">"wkid"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="number token">0</SPAN><SPAN class="punctuation token">}</SPAN>
<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>&nbsp; <SPAN class="punctuation token">}</SPAN>
<SPAN class="operator token">>></SPAN><SPAN class="operator token">></SPAN> ln <SPAN class="operator token">=</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>AsShape<SPAN class="punctuation token">(</SPAN>esri_json<SPAN class="punctuation token">,</SPAN> <SPAN class="token boolean">True</SPAN><SPAN class="punctuation token">)</SPAN>
<SPAN class="operator token">>></SPAN><SPAN class="operator token">></SPAN> ln2 <SPAN class="operator token">=</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>FromWKT<SPAN class="punctuation token">(</SPAN><SPAN class="string token">'LINESTRING(0 0, 10 0)'</SPAN><SPAN class="punctuation token">)</SPAN>
<SPAN class="operator token">>></SPAN><SPAN class="operator token">></SPAN> ln<SPAN class="punctuation token">.</SPAN>distanceTo<SPAN class="punctuation token">(</SPAN>ln2<SPAN class="punctuation token">)</SPAN>
<SPAN class="number token">1.4903987973986754</SPAN>
<SPAN class="operator token">>></SPAN><SPAN class="operator 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>

Circular string and line string adjacent to each other

All comments

BernhardEhrminger

astonishing ... I found a secret bug?

bixb0012

I am glad you were able to sort it out. I took a quick look through the Issues Addressed lists for 10.2.1, 10.3, and 10.3.1; I couldn't see anything that jumped out as this bug being fixed.

BernhardEhrminger

with ArcGIS 10.2 I obtain:

Traceback (most recent call last):

File "_____________________\jsonarc.py", line 16, in <module>

ln = arcpy.AsShape(esri_json, True)

File "C:\Program Files (x86)\ArcGIS\Desktop10.2\arcpy\arcpy\arcobjects\geometries.py", line 164, in AsShape

return convertArcObjectToPythonObject(gp.fromEsriJson(geojson_struct))

File "C:\Program Files (x86)\ArcGIS\Desktop10.2\arcpy\arcpy\geoprocessing\_base.py", line 483, in fromEsriJson

return self._gp.FromEsriJson(json)

ValueError: Invalid geometry type for method

with ArcGIS 10.3 I obtain your result.

So thank you Yoshua for helping isolating my Problem.

bixb0012

Try the following in a standalone Python window, what do you get?

<SPAN class="operator token">>></SPAN><SPAN class="operator token">></SPAN> <SPAN class="keyword token">import</SPAN> arcpy
<SPAN class="operator token">>></SPAN><SPAN class="operator token">></SPAN> esri_json <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">{</SPAN>
<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="string token">"curvePaths"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">[</SPAN>
<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="number token">5</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">,</SPAN>
<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="punctuation token">{</SPAN><SPAN class="string token">"c"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">7</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="number token">3</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="number token">6</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">}</SPAN>
<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">,</SPAN>
<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="string token">"spatialReference"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="punctuation token">{</SPAN><SPAN class="string token">"wkid"</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="number token">0</SPAN><SPAN class="punctuation token">}</SPAN>
<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>&nbsp; <SPAN class="punctuation token">}</SPAN>
<SPAN class="operator token">>></SPAN><SPAN class="operator token">></SPAN> ln <SPAN class="operator token">=</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>AsShape<SPAN class="punctuation token">(</SPAN>esri_json<SPAN class="punctuation token">,</SPAN> <SPAN class="token boolean">True</SPAN><SPAN class="punctuation token">)</SPAN>
<SPAN class="operator token">>></SPAN><SPAN class="operator token">></SPAN> ln2 <SPAN class="operator token">=</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>FromWKT<SPAN class="punctuation token">(</SPAN><SPAN class="string token">'LINESTRING(0 0, 10 0)'</SPAN><SPAN class="punctuation token">)</SPAN>
<SPAN class="operator token">>></SPAN><SPAN class="operator token">></SPAN> ln<SPAN class="punctuation token">.</SPAN>distanceTo<SPAN class="punctuation token">(</SPAN>ln2<SPAN class="punctuation token">)</SPAN>
<SPAN class="number token">1.4903987973986754</SPAN>
<SPAN class="operator token">>></SPAN><SPAN class="operator 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>

Circular string and line string adjacent to each other

DanPatterson_Retired

I don't have any geometry that uses arcs. What is the source data type and its current representation?

From here arcs aren't even mentions, however, geometry consisting of vertices and segments should have no problem if you have densified and converted to one of the mentioned geometry types.

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