How to obtain extent of each polygon using ArcPy?

How to obtain extent of each polygon using ArcPy?

Obtaining extent of each polygon in shapefile using ArcPy? In ArcGIS 10 and Python I want to get the extent (xmax, ymax, xmin, ymin) info of each of the polygons in a shapefile. But I can’t seem to figure out how to get the same info for each row in the dataset. gives an error.

How to get extent info in ArcGIS 10?

In ArcGIS 10 and Python I want to get the extent (xmax, ymax, xmin, ymin) info of each of the polygons in a shapefile. But I can’t seem to figure out how to get the same info for each row in the dataset. gives an error.

Is there minimum bounding geometry in ArcGIS 10?

I just tried the Minimum Bounding Geometry (Envelope) (in Data Management) in ArcGIS 10 and it seems to do exactly the same, for all the fields. As covered in Extracting coordinates of polygon vertices in ArcMap? you can get get the vertices of a polygon and then add the x and y coordinates of each vertex as fields in the attribute table.

How to do a searchcursor on a shapefile?

Another way would be to do a SearchCursor () on the shapefile, then you can use row.shape.extent: rows = arcpy.SearchCursor (shapefileName) for row in rows: extent = row.shape.extent I just tried the Minimum Bounding Geometry (Envelope) (in Data Management) in ArcGIS 10 and it seems to do exactly the same, for all the fields.

How does ArcGIS help with geometry in Python?

See ArcGIS Help Working with geometry in Python: The Bounding Container toolset does exactly what you want. Should you just want code snippets, examine the functions within the scripts, one deals explicitly with extent.

When to use xmin and YMAX in ArcGIS?

When used as input to ArcGIS Spatial Analyst extension tools— Create Constant Raster, Create Normal Raster, Create Random Raster, Extract By Rectangle, and Topo To Raster —only the XMin, YMin, XMax, and YMax values are used by these tools. The extent XMin value. The extent YMin value.

When to use the ArcPy method on a map?

Calling the ArcPy method ‘getExtent’ on a map layer returns the layer extents expressed in the units of the data frame’s coordinate system. However, it might be necessary to obtain the layer extents in the unit of the layer’s coordinate system.

How to find Max and min values for polygons in Python?

This has the limitation of not attaching the max/min coordinates directly to each polygon but this can be achieved in a few ways. The method I am most familiar with is to read the x and y fields into python lists using the pyshp module, which can then be sorted to find maximum and minimum values for each polygon.

How to calculate the orientation of a polygon?

Otherwise, as you say you could split the polygons into lines using the Polygon To Line tool. This adds a left and right FID field, where the field is -1 if there is no outer polygon – this can cause a bit of mucking about though if your buildings are adjacent or overlap.

How to extract coordinates of polygon vertices in ArcMap?

As covered in Extracting coordinates of polygon vertices in ArcMap? you can get get the vertices of a polygon and then add the x and y coordinates of each vertex as fields in the attribute table. This has the limitation of not attaching the max/min coordinates directly to each polygon but this can be achieved in a few ways.

How is the geometry split in ArcGIS Pro?

Splits this geometry into a part left of the cutting polyline, and a part right of it. When a polyline or polygon is cut, it is split where it intersects the cutter polyline. Each piece is classified as left of or right of the cutter. This classification is based on the orientation of the cutter line.