topic Re: raster processing, tiling in Data Management Questions

raster processing, tiling

ericcgrey — Thu, 07 Jul 2011 21:36:29 GMT

I have one big mosaic and many polygons(shapefile), each polygon is a rectangle 1000 by 1000m however there is an ovelap between them 100m.
How to create a raster for each polygon from my shapefile?

I have tested "split raster" but it doeasn't solve the problem

Re: raster processing, tiling

EricRice — Fri, 08 Jul 2011 14:46:26 GMT

Eric,

Split Raster is a viable tool but you would have to fill out the parameters so the output rasters aligned with your polygon records. If you prefer not to use this tool, you can make a very simple model using the Clip tool. In the model, add an iterator for Feature Selection. The iterator will loop through each polygon record and use its geometry to clip the raster.

Attached is a graphic of the model to do this. Here are examples of using iterators in ModelBuilder .

Note, Iterators are only available in ArcGIS 10.0.

Regards,
Eric

Re: raster processing, tiling

ericcgrey — Sun, 10 Jul 2011 21:12:26 GMT

Thank you for the answer, however output rasters will overwrite each other. I get only the last clipped raster!
I would like to assign the ID value from selected polygon (from my shapefile) to raster name (see the file attached: Value2 -> test)?

Is it possible?

Re: raster processing, tiling

MarkChilcott — Fri, 15 Jul 2011 02:21:58 GMT

Hi Eric,

Have you tried this method on real data? I can't get it to work.

The clip values don't keep iterating and changing with the new tiles, and I can't see a way to change the name of the output raster file - so any output is over written each time.

What am I missing here?

Cheers,

mark

Re: raster processing, tiling

MarkChilcott — Fri, 15 Jul 2011 03:27:20 GMT

I see my error now. Read the manual and use in-line variables as the output.

Cheers,

Mark

Re: raster processing, tiling

NoahHuntington — Fri, 06 Apr 2012 02:38:21 GMT

Thamks for this. Adding in line variable worked liked a charm!