Mosaic to new raster

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05-10-2017 05:30 PM
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New Contributor II

I have 33 DEM tiles that I am trying to mosaic together using this tool in ArcGIS Desktop,

tiles

but I keep getting strange results.

All of the DEM pixel depths/sizes are 32 bit float, 1 band and are in NAD83, which I have been specifying in the tool. I'm saving it to a gdb and not specifying a cellsize. I am also leaving the mosaic operator and colormap modes as the defaults. This is the result I am getting:

mosaic_32bit

Wondering if anyone knows why this is happening.

I tried using a mosaic dataset, but I am having issues with performing additional manipulation of it after I added all of the tiles. I would prefer to use the mosaic to new raster as I know the additional analysis and manipulation I need to perform has worked in the past.

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Frequent Contributor

Someone else recently had this issue and it was solved by creating the new mosaic in a regular folder then moving the resultant raster back to the gdb.

https://community.esri.com/thread/194308-toruble-with-lidar-data-and-using-the-tool-mosaic-to-new-ra...

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Regular Contributor II

Could you change mosaic operator to Mean and retry?

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New Contributor II

Thanks for the reply Abdullah!!  I tried your suggestion, but now I got this as the result:

mosaic_mean

I'm going to try the other suggestions now.  Hopefully one of these works!!

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Honored Contributor

If you are able create a Mosaic Dataset > Load the Rasters to it, then you could use Copy Raster to convert the Mosaic Dataset to a Raster Dataset.

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New Contributor II

I didn't get to try this suggestion.  It may work, but I didn't have the rasters in a gdb, only a regular folder and it would take time to import them and then try this.

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Frequent Contributor

Someone else recently had this issue and it was solved by creating the new mosaic in a regular folder then moving the resultant raster back to the gdb.

https://community.esri.com/thread/194308-toruble-with-lidar-data-and-using-the-tool-mosaic-to-new-ra...

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New Contributor II

This solution worked.  Thank you very much.  Strange that you have to do it this way though.

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Regular Contributor II

Could you check by create this mosaic with mosaic dataset instead of mosaic to new raster.

and please snapshot of footprint of raster.

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Community Team

HI Mich - Thanks for asking your questions and welcome to the GeoNet community! I wanted to let you know that we're moving your question from the GeoNet Help group to the https://community.esri.com/community/gis?sr=search&searchId=00654b19-947b-4193-836a-6470cab8eb7f&sea... space so our Esri and user subject matter experts can further help answer this and future questions.  So you're aware on how and where to post your questions, here's a few quick tips and reminders:

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  3. The GeoNet GeoNet Help group is for questions and tips on how to use the GeoNet community platform not the Esri ArcGIS platform. Following steps 1 & 2 above will give you the best results for getting Esri product questions answered.
  4. This GeoNet 101 "How to Ask Questions on GeoNet" post is also a helpful guide to asking questions: https://community.esri.com/community/help-and-feedback/blog/2016/08/15/community-news-and-tips-how-t...

 

Thanks again for contributing and I hope this helps and let us know if you have any questions.

Esri Community Strategist
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New Contributor II

Thank you for the information Christopher.  I wasn't sure where to post, but now I know.

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