topic Re: Cell statistics in modelbuilder (multiple input, single output) in ArcGIS Spatial Analyst Questions

Cell statistics in modelbuilder (multiple input, single output)

FlorianRenner — Mon, 08 Oct 2012 06:00:42 GMT

Hello,
I have a problem utilizing the cell statistics tool in modelbuilder. My intention was to select a whole folders content of raster data to create a single "sum"-raster. Problem is, I cannot select the content of a specific folder, just the files/raster data themself. I tryed runnig an iteration but the output is multiple (for each selected folder content). So is there a possibility to not just select single input files rather than a folder's content?

Thanks

FR

Re: Cell statistics in modelbuilder (multiple input, single output)

EricRice — Mon, 08 Oct 2012 15:28:40 GMT

Florian,

The input to Cell Statistics is a list of rasters, not a workspace. You can however accomplish what you want in model builder by using a sub model to iterate the workspace and collect the values. This is the first model. The second model is only the Cell Statistics tool with the output from the sub model as the input to the tool. You have to do it this way since you only want Cell Statistics to execute once, rather than for each iteration. You can review the section "Advanced use of model iterators" within the help topic, Integrating a model within a model. Below are some screenshots of a model I made this morning that is very similar to the one in the help. I just replaced Merge with Cell Statistics, and I used a different iterator (for raster data). Also included in the screenshots is what the finished tool dialog could potentially look like for an end user of the tool.

Best Regards,
Eric

Re: Cell statistics in modelbuilder (multiple input, single output)

FlorianRenner — Wed, 17 Oct 2012 08:33:40 GMT

Dear Eric,
thank you for your reply and visualization. I was able to create a comparable model and insert it (twice) in my final one. Additionally is this a nice way to work with more than one iterator in a single model. My last question refers to the submodel creating the list of rasters: is it necessary to include this submodel separately in a toolbox to run a different model where the submodel is included?

Thank you,

Florian

Re: Cell statistics in modelbuilder (multiple input, single output)

curtvprice — Fri, 01 May 2015 01:26:52 GMT

Yes. Sub models is how nesting loops (iterating inside a model that runs once) are implemented.