topic Re: How to create a feature in a feature class with ArcPy in Developers Questions

How to create a feature in a feature class with ArcPy

JoseSanchez — Mon, 23 Apr 2018 16:53:09 GMT

Hello everyone,

How can I create a point feature in a feature class with ArcPy the same way I do it with vb.net

I need to convert this vb.net code into Python code.

Dim workspaceEdit As IWorkspaceEdit = CType(myTargetIWorkspace, IWorkspaceEdit)

'' Start an edit session. An undo/redo stack isn't necessary in this case.

workspaceEdit.StartEditing(False)

''/ Start an edit operation.

workspaceEdit.StartEditOperation()

Dim feature As IFeature = pFeatureClass.CreateFeature()

feature.Shape = pPoint

feature.Value(feature.Fields.FindField("ID")) = IncidentID

feature.Value(feature.Fields.FindField("ADDRESS")) = Address

feature.Value(feature.Fields.FindField("XCOORD")) = pPoint.X

feature.Value(feature.Fields.FindField("YCOORD")) = pPoint.Y

feature.Value(feature.Fields.FindField("PROBDESC")) = ProblemDescription

feature.Value(feature.Fields.FindField("REQSTDATE")) = DateTime.Parse(RequestedDate.ToString)

feature.Store()

''// Save the edit operation. To cancel an edit operation, the AbortEditOperation

''// method can be used.

workspaceEdit.StopEditOperation()

''// Stop the edit session. The saveEdits parameter indicates the edit session

''// will be committed.

workspaceEdit.StopEditing(True)

Re: How to create a feature in a feature class with ArcPy

JoeBorgione — Mon, 23 Apr 2018 16:57:27 GMT

Does this help? Create Feature Class—Help | ArcGIS Desktop

Re: How to create a feature in a feature class with ArcPy

JoseSanchez — Mon, 23 Apr 2018 17:00:47 GMT

I am looking for a sample code to create a record in the feature class, not a feature class.

Re: How to create a feature in a feature class with ArcPy

JoeBorgione — Mon, 23 Apr 2018 17:08:35 GMT

Oops. My bad. Sorry about that!

how about this: https://www.e-education.psu.edu/geog485/node/142

insert cursors: InsertCursor—Help | ArcGIS Desktop

Re: How to create a feature in a feature class with ArcPy

DanPatterson_Retired — Mon, 23 Apr 2018 17:14:25 GMT

Then you want an UpdateCursor or an InsertCursor and you can follow some of the code samples in the arcpy section of the help files... for example

Writing Geometries....

There are loads of other examples, and even on geonet, code samples abound and I am sure that the exact snippet has been written to suit your case, but the arcpy help is a good reference location

Re: How to create a feature in a feature class with ArcPy

JoseSanchez — Mon, 23 Apr 2018 18:02:52 GMT

An exact snippet!!! this is what I am looking for 🙂

Re: How to create a feature in a feature class with ArcPy

JoeBorgione — Sun, 12 Dec 2021 08:16:11 GMT

I thought the links above provided samples. Here is some code I use to create a rectangular polygon based on screen map extent. Note that it's only an 'in memory' feature class that I use and toss....

mxd = arcpy.mapping.MapDocument("CURRENT")
df = arcpy.mapping.ListDataFrames(mxd)[0]
frameExtent = df.extent
#
XMAX = frameExtent.XMax
XMIN = frameExtent.XMin
YMAX = frameExtent.YMax
YMIN = frameExtent.YMin
#
pnt1 = arcpy.Point(XMIN, YMIN)
pnt2 = arcpy.Point(XMIN, YMAX)
pnt3 = arcpy.Point(XMAX, YMAX)
pnt4 = arcpy.Point(XMAX, YMIN)
#
array = arcpy.Array()
array.add(pnt1)
array.add(pnt2)
array.add(pnt3)
array.add(pnt4)
array.add(pnt1)
#
Mypolygon = arcpy.Polygon(array)
arcpy.CopyFeatures_management(Mypolygon,"in_memory\\ExtentPoly")
in_poly_layer = arcpy.mapping.ListLayers(mxd,"ExtentPoly",df)[0]
poly_symbology_layer = arcpy.mapping.Layer(r"C:\LayerFiles\EmptyRedPolygon.lyr")
arcpy.ApplySymbologyFromLayer_management(in_poly_layer,poly_symbology_layer)
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Re: How to create a feature in a feature class with ArcPy

DanPatterson_Retired — Sun, 12 Dec 2021 08:16:14 GMT

Perhaps the link isn't exactly what you need... just replace what isn't needed with stuff in the example.

import arcpy
fc = "c:/data/gdb.gdb/roads"
cursor = arcpy.da.InsertCursor(fc, ["SHAPE@"])
array = arcpy.Array([arcpy.Point(5997611.48964, 2069897.7022),
                     arcpy.Point(5997577.46097, 2069905.81145)])
spatial_reference = arcpy.SpatialReference(4326)
polyline = arcpy.Polyline(array, spatial_reference)

cursor.insertRow([polyline])‍‍‍‍‍‍‍‍‍

There are other examples in the link I sent, just like the one above