You can try this Python script which reads vertices coordinates, recognises inner ring and writes '1' for inner ring coordinates:def main(): try: import arcpy, sys, traceback polygon = r"C:\tmp\Test.gdb\PolygonWithInnerRings" txtFile = open(r"C:\tmp\PolygonToTXT.txt","w") headerLine = (", ").join(["VertObjID", "X", "Y", "InRing"]) txtFile.write(headerLine + "\n") rows = arcpy.SearchCursor(polygon) for row in rows: feature = row.SHAPE #get the geometry into variable featureID = row.OBJECTID #adjust this if not in geodatabase partNum = 0 #feature can have multiple parts - first goes iteration through parts for featurePart in feature: part = feature.getPart(partNum) #the output is Array of points isInnerRing = "0" linesLst = [] #iterate through points for pnt in part: if pnt: vertexLine = (", ").join([str(featureID), str(pnt.X), str(pnt.Y), isInnerRing]) linesLst.append(vertexLine) else: isInnerRing = "1" linesLst.append("InRing") #remove duplicated point and write to file linesLst.pop(linesLst.index("InRing")-1) for line in linesLst: if line != "InRing": txtFile.write(line + "\n") partNum += 1 del rows, row txtFile.close() except: print arcpy.GetMessages() # Get the traceback object tb = sys.exc_info()[2] tbinfo = traceback.format_tb(tb)[0] # Concatenate information together concerning the error into a # message string pymsg = tbinfo + "\n" + str(sys.exc_type)+ ": " + str(sys.exc_value) # Return python error messages for use with a script tool arcpy.AddError(pymsg) # Print Python error messages for use in Python/PythonWin print pymsg if __name__ == '__main__': main()
