topic Re: Rotate Polygon using Attribute in ArcGIS Pro Questions

Rotate Polygon using Attribute

BruceBurwell1 — Fri, 07 May 2021 07:13:21 GMT

Good Morning

I am trying to rotate feature class with over 700 polygons based on the angle in an attribute? These polygons are all based on center points that were buffered and then run the create envelope tool. All the polygons now are oriented N/S. Any wok flows would be appreciated.

Thanks

Bruce Burwell

Re: Rotate Polygon using Attribute

anyry — Fri, 07 May 2021 08:52:05 GMT

Hello,

Try using arcpy, see the code below.

def rotation(rotatefield): def rotatepoint(point, pivotpoint, angle): angle_rad = -math.radians(angle) ox, oy = pivotpoint.X, pivotpoint.Y px, py = point.X, point.Y qx = ox + math.cos(angle_rad) * (px - ox) - math.sin(angle_rad) * (py - oy) qy = oy + math.sin(angle_rad) * (px - ox) + math.cos(angle_rad) * (py - oy) return arcpy.Point(qx,qy) with arcpy.da.UpdateCursor("annotation_polygons",['SHAPE@', rotatefield]) as cursor: for row in cursor: polylist = [] for part in row[0]: partlist = [] for pnt in part: if pnt is not None: partlist.append(rotatepoint(pnt, arcpy.Point(row[0][0][0].X, row[0][0][0].Y), row[1])) polylist.append(partlist) row[0] = arcpy.Polygon(arcpy.Array(polylist)) cursor.updateRow(row)

Re: Rotate Polygon using Attribute

DrVSSKiran — Fri, 07 May 2021 11:36:25 GMT

Hi Anyry,

Here is the solution

Step 1: Polygon with Attribute Values. I have created a field name called "Angle" and manually keeping some values. (Refer Screenshot)

Step 2: Go to the insert tab and click the new notebook

Step 3: Paste the script, which I have attached in mentioned in notepad and attached. (Refer Screenshot)

Step 4: make changes in two placed feature class name and attribute field name. Refer screenshot.

Step 5: Hit the Run button in a notebook

Step 6: Here is the output results

Enjoy.....

Re: Rotate Polygon using Attribute

Anonymous User — Tue, 21 Sep 2021 14:57:30 GMT

This throws a NoneType is not iterable error.

Re: Rotate Polygon using Attribute

JoshuaBixby — Fri, 03 Jan 2025 17:44:47 GMT

If you are going to share someone else's code verbatim, giving a reference and attribution will prevent others from thinking you are plagiarizing work.

Rotating polygons by value from attribute table using ArcPy? - Geographic Information Systems Stack Exchange