topic Re: Failed Weighted Sum in ArcGIS Pro Questions

Failed Weighted Sum

EthanUpton — Tue, 15 Nov 2016 18:17:23 GMT

I am trying to run the Weighted Sum tool but I keep getting the Error 010050 Cell size not set. The problem is that I have set the cell size in the environment and can't quite figure out the issue. Any ideas?

Re: Failed Weighted Sum

DanPatterson_Retired — Tue, 15 Nov 2016 19:50:52 GMT

cell size was set within the tool's environments? or at a general level?

Re: Failed Weighted Sum

JenniferWheeler — Sun, 09 Apr 2017 16:30:42 GMT

Are you still having this issue? I am having an issue with it...

Re: Failed Weighted Sum

DavidWasserman — Tue, 25 Apr 2017 00:41:09 GMT

I actually ran into this issue recently. Any news on it?

I eventually just sampled the raster to vector and did a calculate field in python to do the weighted sum...

Anyone else?

Re: Failed Weighted Sum

curtvprice — Tue, 25 Apr 2017 01:43:41 GMT

This GP error sometimes comes up when the output cell size the system attempts to set is invalid, for example, it's set to 30 and the input coordinate system is in degrees units. I have a wild guess that this may be what's happening here.

I have also seen this error (usually together with others) when the raster output path or scratch workspace path is invalid (or the workspace does not exist). The raster can't be written and this error popups as a side-effect.

When doing this kind of analysis, it's advisable to project and resample your input data are in the same coordinate system before you run a raster analysis, as the environment can get garbled when projecting on the fly. You also have less control of resampling, etc when you have the system do all the resampling and projecting automatically.

Re: Failed Weighted Sum

DavidWasserman — Tue, 25 Apr 2017 04:41:21 GMT

Hi Curtis, I will check on this back at work, but I am not sure that explains my error. This does help though, it gives me something to check. I went though pains to make sure everything was state plane, but I could have missed something.

Re: Failed Weighted Sum

AdamArcichowski1 — Wed, 07 Jun 2017 21:37:29 GMT

Hey I am having the same issue. Except I am using the weighted overlay tool.

Re: Failed Weighted Sum

curtvprice — Thu, 08 Jun 2017 00:08:29 GMT

See my response above

Cell Size (Environment setting)—Geoprocessing | ArcGIS Desktop

Re: Failed Weighted Sum

DavidWasserman — Fri, 16 Jun 2017 02:36:15 GMT

Hi Curtis,

To follow back to this, it seems weighted sum does not have the same raster name validation as raster calculator. This is one thing I found. Raster Calc requires 13 character names.

Another thing I found is even when the name is less than 13 characters, this tool does not work. I have not tried reprojecting, but I have tried using raster calculator and it is working on the same data. I am thinking I will just elect to do this the old fashion way in raster calculator. It feels like a bug, but I could be mistaken.

David

Re: Failed Weighted Sum

curtvprice — Fri, 16 Jun 2017 20:41:57 GMT

The issue with 13 characters is when data is output in grid format. If you save to another format (for example, using a .tif extension) the naming rules are little more relaxed. In general I highly recommend sticking with short raster names that start with a letter and only [a-z][0-9]_ -- this usually keeps you out of trouble. Also, never use spaces in data file, field, workspace, folder names.

A copy paste from your dialog window would probably help us out here diagnose your problem. It does sound like there may be a path naming issue.

https://community.esri.com/people/curtvprice/blog/2016/05/07/how-to-name-things-in-arcgis?sr=search&searchId=5efcd37d-0415-47ff-b244-c59a1997c2a0&searchIndex=0‌

Re: Failed Weighted Sum

DavidWasserman — Wed, 21 Jun 2017 16:45:51 GMT

Hi Curtis,

This is something I just realized, but I am working in ArcMap 10.4. I just saw that this thread is ArcGIS Pro. That said, the error I got matches the one discussed here. Also if relevant this is over a network drive on a Windows 7 PC. I will try to do the same tool run on a local drive to check if that is an issue later. For now, I have resolved this problem for this project and will report back when I get another opportunity.

I will get a dialogue copy pasted when I get access, but generally I used the conventions for names that are outlined as standard practice as you suggested. I used the same paths for both Weighted Sum and Raster Calculator. The only difference was Raster Calculator worked. The paths for both tools were: N:\Projects\....\GIS\Working_Data.gdb\Fin_ActP_Ped

David

Re: Failed Weighted Sum

StephanieAinsworth — Wed, 19 Jul 2017 03:29:23 GMT

I had the same issue then I got rid of the mask I had in environments and Weighted Sum worked like a charm

Re: Failed Weighted Sum

DavidWasserman — Thu, 20 Jul 2017 17:45:09 GMT

I don't like that this is the answer...I actually used a mask for my processing. It sounds like it might just make sense to use a processing extent and then mask after then?

Re: Failed Weighted Sum

curtvprice — Thu, 20 Jul 2017 17:48:53 GMT

It may work better if you use a raster mask instead of a polygon. The behind the scenes vector to raster processing doesn't always perform well, especially if the polygon is complex. Also, I didn't mention, for heavy raster processing it is best practice to set the scratch workspace to a local, nicely named folder. This allows these (so-called) in-memory temporary rasters used by map algebra to be written quickly to disk.

Re: Failed Weighted Sum

JohnLowry2 — Wed, 08 Nov 2017 23:07:21 GMT

Removing the raster mask worked for me!