arcmap - Using Replace Geometry to replace selected feature with circle in ArcGIS Desktop?

I have a polygon shapefile and I want replace every irregular polygon with a circle.

I think I can do it with the Replace Geometry tool. But once the Replace Geometry tool is selected, draw a polygon mode is immediately entered. If I select the circle tool in the Draw tool window, the Replace Geometry tool becomes inactive.

Is there any way to use the Replace Geometry tool to draw a circle polygon?

Answer

The script below is using following naming convention of layers in the table of content:

1. "Target" - feature layer with geometries to be replaced


2. "chops" - feature layer with correct geometries

It works on selection, i.e. 1 feature selected in each layer.

import arcpy, traceback, os, sys


try:
    def showPyMessage():
        arcpy.AddMessage(str(time.ctime()) + " - " + message)
    def CheckBothLayers(infc,infc2):
        d=arcpy.Describe(infc); theType1=d.shapeType
        d=arcpy.Describe(infc2); theType2=d.shapeType

        if theType1!=theType2:
            arcpy.AddWarning("\nTool designed to work with same geometries!")

            raise NameError, "Wrong input\n"
        return d
    mxd = arcpy.mapping.MapDocument("CURRENT")
    layers = arcpy.mapping.ListLayers(mxd)

    destLR, sourceLR="chops","target"
    destLR = arcpy.mapping.ListLayers(mxd,destLR)[0]
    sourceLR = arcpy.mapping.ListLayers(mxd,sourceLR)[0]
    a = CheckBothLayers(destLR,sourceLR)
    g=arcpy.Geometry()

    geometryList=arcpy.CopyFeatures_management(destLR,g)
    nLines=len(geometryList)
    if nLines!=1:
        arcpy.AddWarning("\nSelect only 1 feature!")
        raise NameError, "Wrong input\n"
    line=geometryList[0]

    tbl=arcpy.da.TableToNumPyArray(sourceLR,"OID@")
    if len(tbl)!=1:
        arcpy.AddWarning("\nSelect only 1 feature!")

        raise NameError, "Wrong input\n"
    with arcpy.da.UpdateCursor(sourceLR, ("SHAPE@")) as rows:
        for row in rows:
            row[0]=line
            rows.updateRow(row)
    arcpy.SelectLayerByAttribute_management(destLR, "CLEAR_SELECTION")
    arcpy.SelectLayerByAttribute_management(sourceLR, "CLEAR_SELECTION")
    arcpy.RefreshActiveView()

except NameError, theMessage:

    arcpy.AddMessage (theMessage)    
except:
    message = "\n*** PYTHON ERRORS *** "; showPyMessage()
    message = "Python Traceback Info: " + traceback.format_tb(sys.exc_info()[2])[0]; showPyMessage()
    message = "Python Error Info: " +  str(sys.exc_type)+ ": " + str(sys.exc_value) + "\n"; showPyMessage()            

The best way to use it - attach to a button on Editor toolbar:

Don't forget to save edits