Latest Contributions by DuncanHornby

Hard to say, you reference software that was made obsolete more than 20 years ago! So shapefiles are more than 20 years old. How ArcPro reconciles precision may be quite different to software that was built 20 years ago, especially as data formats have matured, such as the file geodatabase.  I would always recommend using shapefiles as a last resort and use file geodatabases as they are superior in their functionality and storage capacity. I would imagine the article is still relevant to shapefiles, a format that is now over 20 years old. ... View more

I'm really surprised that you can have a featureclass inside a featuredataset with the same name as the featuredataset. As a first test try renaming the DT featureclass to something else then run your code, what do you get then? ... View more

The help page I pointed you to in your cross post explains the adding of a table to layout is a one-time step and you can't update it. Table Frames are much improved in ArcPro, ... View more

I've been exploring this problem and it appears to be an issue with the number of unique values. I need to symbolise 13,000 values and this could easily be more.  The GUI handles it but when I set it to be an UniqueValueRenderer in arcpy it blows up with a misleading error message. The property sampleSize does not appear when accessing the renderer properties (that sees like a cosmetic bug to me) as I can set it, but it has no affect. I wondered about going down the CIM route but  because the object model is not clear and there appears to be zero examples anywhere on the internet of setting the symbology of a layer to be unique values using CIM in arcpy it is impossible for me to test my code as EVERYTIME I try something ArcPro crashes throwing me out into Windows... It would be good if esri released some code samples of using CIM to create an UniqueValueRenderer in arcpy. All I have seen on the internet are c# solutions. Quite frustrating. ... View more

Your script logic looks sound but its how you are reference the inline variable that is the issue. Your calculate value tool - don't name its output with 1) a database reserved word and 2) with %% around it. Call it something like myDate. If you had renamed the output to %bob% then you would need to reference it as %%bob%%.   ... View more

I would try running the model up to the copy feature tool then attempt to add the new dataset manually in Arcpro to a map, may be that will give you some insight into why the clip tool cannot open it? For example may be you have copied nothing...? ... View more

You say the Clip tool is unable to open the output of the Copy Features tool? What is the error message? What is the output path? The fact the model has coloured up suggests this input to clip tool is valid. ... View more

Your image seems to be showing census areas, these polygons will exist already, suggest you search the relevant city authority. As its USA data have you looked at the Living Atlas? I've not done much feature extraction but you have roads, labels, coloured dots in the mix and I would imagine extraction in some automated way would be messy? ... View more

This sounds like a Nuance Power PDF issue, have you tried contacting their support page? ... View more

Unless the change detection wizard requires your data to be projected you can probably leave your data in a WGS84 coordinated system and use it without projecting. 30m at the equator is 0.000269 in decimal degrees, you can have a play using this web page. If you are attempting to report change in m2 then you are best projecting your raster into a coordinate system where the units are in metres and not decimal degrees. Summary lengths /area will make more sense. You'll need to do a little research for what's best for mapping area in the region of Moreton Bay, Queensland.  ... View more

Hi, Did you find a solution to this? I'm developing some code in Arcpro 3.1.3 and I too get the same vague error. I've tried running it in the python command line window as well as notebook. I've also saved the project, re-opened it with the layer in it and tried running the code below. The layer exists, so its not a broken layer,there is sensible data in it and SubNetID field exists. If I go to the Symbology panel in ArcPro and set it to unique value, subnetid, then it all uniquely colours so I know the dataset is OK. Dare I say it that ESRI have somehow broken this with an update? My code is simply:     aprx = arcpy.mp.ArcGISProject("Current") aprxMap = aprx.listMaps("Map")[0] layer = aprxMap.listLayers('Sub1000_3')[0] # This layer was initially loaded into the map as a single symbol aSymbology = layer.symbology aSymbology.updateRenderer('UniqueValueRenderer') aSymbology.renderer.fields = ["SubNetID"] p = arcpy.mp.ArcGISProject("CURRENT") cr = p.listColorRamps("Basic Random")[0] aSymbology.colorRamp = cr layer.symbology = aSymbology     It fails on line 6 with  NameError: The attribute 'fields' is not supported on this instance of UniqueValueRenderer.  Trying to think out of the box, you could argue the renderer has not been given any values to render but it seems to be a chicken and egg situation, how can I give it values when the first step is to say which field you want to render on, but its that line it fails on! I've tagged a few of python gurus into this to see if they can identify the issue: @DanPatterson_Retired , @curtvprice , @XanderBakker , @jcarlson , @JoshuaBixby  ... View more

Unless I've missed some point, seems like overkill the way you are doing it, why not simply call the power tool directly, see python code sample here.   ... View more