OIC. I thought you were running the deleteIdenticals on the final appendFC, but sounds like you used it to "fix" the polygons.Don't think the different schemas would matter as long as the fields you are concerned about are identical. I.e., if you add your three fields to each polygon FC first.Now that I think about it (even more), this is what I would try:merge will add them all together and add all fields from all input FC's. Will combine them if they are identical. So, if they have the three identical fields that you are interested in, the rows will be populated with the attributes.So,
appendFC = r"C:\TEMP\PDX_SAB\PDX_SAB.gdb\PDX_SAB_Centerpoint"
outFC = "in_memory\\centerPoints"
tmpFC= "in_memory\\tmpFC"
fieldList = ["ProjectNum", "OriginalPath", "ServiceArea"]
##Merge tool will honor the coordinate system of the first FC in the list to be merged, so I'd make my list something like:
fcList = ["baseFC"] # where BaseFC is a FC in your workspace that is in the correct coordinate system, this will set the output to the SR you want
layerList = []
then, after you do your walk,
for all file in filenames:
fcList.append("file")
for all fcs in fcList: ## these two look like duplication, but this is how I add to a list with a value already. For file in filenames is a list I can't control this way
layername = str(fcs) + "feature_layer"
layerList.append(layername) # append the new in memory layer names to a list so we can utilize it after iteration.
arcpy.MakeFeatureLayer_management(fcs,layername) # this will put them as in memory layers and are fast
arcpy.AddField_management(layername, "ProjectNum", "TEXT", "", "", 20, "", "NULLABLE", "REQUIRED")
arcpy.AddField_management(layername, "OriginalPath", "TEXT", "", "", 255, "", "NULLABLE", "REQUIRED")
arcpy.AddField_management(layername, "ServiceArea", "TEXT", "", "", 75, "", "NULLABLE", "REQUIRED")
arcpy.CalculateField_management(layername, "ProjectNum", "exp", "PYTHON_9.3")
arcpy.CalculateField_management(layername, "OriginalPath", "exp2", "PYTHON_9.3")
arcpy.CalculateField_management(layername, "ServiceArea", "exp3", "PYTHON_9.3")
Now, after iterating through all FC, and making the list of feature layers, combine them all so we can do the rest in one swoop.
arcpy.Merge_management(layerList, tmpFC) ### merges all the polygon in memory fc's with new calculated fields into an in memory fc
fields = arcpy.ListFields(tmpFC)
for field in fields:
if field not in fieldList:
arcpy.DeleteField_management (tmpFC, field) ## will drop all the "extra" fields if not in the fieldsList.
arcpy.FeatureToPoint_management(tmpFC, appendFC, "INSIDE") ## this will make point FC in same SR as first input with your three fields appended.
unless you run out of memory or something, I think this approach would be much faster.Of course, this is just the basic outline, you would need to incorporate the expression code and such in there, so this code isn't "run ready"Also, as far as converting the SR of the polygons, if you have the need to convert them for some other reason, then probably worth doing that first. however, both append and merge will honor coordinate systems (if defined) and will on the fly re-project them to the ouput datasets SR (to the SR of first input for Merge).R_also, could easily skip the two list builders if you make sure that the first one being read to your list is in the proper SR.
