Latest Contributions by HughGraham

Hi Dan, Yes, these are integer rasters so that explaination makes perfect sense - an interesting "Gotcha"! Good to know! Cheers ... View more

Hi Neeraj, thanks for the response. So I think I have narrowed down the problem. I don't think the issue lies entirely in RasterToNumpyArray.  A large part of the issue comes from me comparing results created from Python 3 using the Arc Pro environment (run outside arc) with results from Python 2 run inside Arc 10 (various versions). It seems that when run outside arc some arguments for various functions are ignored in Arc Pro. A little more info... Prior to RasterToNumpy array I have extracted the Raster by mask with: ebm_ras = arcpy.sa.ExtractByMask(bhi_ras, shp) Arc 10 handles this well and creates a raster where cells outside the "extract shape" being masked and set to NA. Arc Pro on the other hand converts all cells outside the "extract shpe" to zero. I got around this by using Map Algebra instead of extract by mask. This is one cause for the difference in np.nanmean. But wait there's more... When I run RasterToNumpyArray with: ebm_np = arcpy.RasterToNumPyArray(in_raster = ebm_ras) Arc10 converts the No data values to values of 15... The real raster data consists of cell values from 0-5. to remedy this the follwowing can be used ebm_npa = arcpy.RasterToNumPyArray(ebm_ras, nodata_to_value=-100) and then convert -100 values to np.nan or ignore -100 values in calculation. Again in Arc Pro Python (outside of ArcPro) RasterToNumpyArray converts all NA values to zero regardless of the nodata_to_value value... Again this coulf be solved by using map algebra, specifying a value (e.g. -100) for NA values then converting to np array and running:  array[array == -100] = np.nan In summary the problem appears not to lie with ArcMap but actually in ArcPro when using Python outside of the GUI. Cheers, Hugh ... View more

Thanks for looking into it! I totally agree - really impressed with ArcPro and particularly the Anaconda environment - makes things much easier. Unfortunately I am unlikely to be able to persuade the clients to switch over any time soon. I'll update when I find the issue! ... View more

Thanks Dan, really appreciate the ideas. numpy version is 1.9.3. It looks as though something is going funny with the raster to numpy array function... I belive you may be right with your suggestion about the handling of nan values. I've got some more probing to do though as numpy does appear to function correctly in both versions of python. I'll report back when I get a little further with this.  Cheers, Hugh ... View more

Hi Joe, Many thanks for the reply. I am fairly sure that I have a named user license. I access ArcPro via the enterprise login section.  Prior to this error I had requested access to Arc Pro offline. As I am unable to open Arc Pro I am unable to edit my settings in the Portal - is there another way that I can access the portal? Time settings on my PC seem to be as normal... I have tried a complete uninstall - when running the additional microsoft utility that you provided I cannot locate ArcPro in the list of applications provided and therefore cannot run the utility as desired. I have manually gone through the registry and removed all reference to ArcPro. Following a reinstall I now recieve an error stating that I am registered to use Arc Pro on another device and therefore still cannot log in.  I have spoken to the admin at my University, who have contacted ESRI. They have requested that my offline permissions be reset ( Do you know of a way I can do this myself?). Hopefully then I will be able to open Arc Pro and access the Portal - I will let you know if this solves the issue. Do I have any other options that I can try in the meantime? Many thanks again, Hugh ... View more

I Was having issues with this - Couldn't clone the defualy ArcPro Python environment so I used Conda outside out ArcPro to fix the issue. I opened the default conda environment > opening this batch file:  C:\Program Files\ArcGIS\Pro\bin\Python\Scripts\proenv.bat Then cloned the environment: conda create --name arcpro_clone --clone arcgispro-py3 activate arcpro_clone   The environment was installed in:  C:\Users\<user>\AppData\Local\ESRI\conda\envs\arcpro_clone following this it was possible to edit the environment with Conda directly Set up a batch(.bat) to open this env more effeciently in future with: @echo off    set PATH=%PATH%;C:\Users\<user>\AppData\Local\ESRI\conda\envs\arcpro_clone\Scripts %windir%\system32\cmd.exe "/K" C:\Users\<user>\AppData\Local\ESRI\conda\envs\arcpro_clone\Scripts\activate.bat arcpro_clone Cheers ... View more