Iterate Raster Collect Values Sub-Model Batch process question.

Question

Using the desktop help ("Examples of using Model Only tools in ModelBuilder"), I replicated the model example that was provided for Collect Values. It iterates through rasters in a workspace, collects the values, then passes those values to the Mosaic to New Raster tool. This works fine when I provide one workspace but if I try to batch process multiple workspaces (I've got thousands of them) the resulting mosaic output is wrong.
What seems to happen is it only collects the first raster in the first workspace provided, then it moves to the next workspace, iterates / collects all of those rasters, then passes all this to the Mosaic to New Raster tool. The output is a mosaic raster containing inputs from multiple workspaces. This is wrong in two ways: 1) Each workspace needs to be operated on separately and 2) not all rasters are being collected in the iteration process.  
So am I missing something here? Is it even possible to batch process a model iteration?

Thanks in advance for any input provided.

Dave

DavidHockman-Wert · Answer

Zack, this may or may not work, but one thing I have been learning about Collect Values is that it runs best when run in a sub-model, and the "collected" values are passed back into a main model all at once.  Otherwise, one experiences what paul_c describes, where the Mosaic tool runs after each iteration.  One of ESRI's examples seems to indicate it will iterate through all rasters and collect all values prior to going on to the next tool, but this is not the case in my experience.

I don't know if this will solve the number of bands issue, but it might.

DaveHi, I am having a similar problem with combining an iterator and the collect values tool with the Mosaic to New Raster tool. Basically I would like to collect a number of rasters from a geodatabase based on a Wildcard specification, then mosaic these into a new raster. However, I continue to get the ERROR 00157 "Input and target dataset should have the same number of bands". I'm not sure what the problem is. All the rasters have a single band and I am following almost the exact same process as ESRI's example of how to use the Collect Values tool. I have also attached an image of what my model looks like.
Thank you for the help.

ZackSteel · Answer

Hi, I am having a similar problem with combining an iterator and the collect values tool with the Mosaic to New Raster tool. Basically I would like to collect a number of rasters from a geodatabase based on a Wildcard specification, then mosaic these into a new raster. However, I continue to get the ERROR 00157 "Input and target dataset should have the same number of bands". I'm not sure what the problem is. All the rasters have a single band and I am following almost the exact same process as ESRI's example of how to use the Collect Values tool. I have also attached an image of what my model looks like.
Thank you for the help.

Export Graphic.png

tuango · Answer

Thanks for your link. It's useful for our community.
Same material can be found at : MOSAIC model
I hope it's useful for you and you like it. Please continue sharing more information at this topic.
Best rgs!