topic Re: Pixel depth problem Mosaic Dataset Analyzer: Error 70127 in Data Management Questions

Pixel depth problem Mosaic Dataset Analyzer: Error 70127

forestknutsen1 — Fri, 14 Apr 2017 00:10:12 GMT

I have a MD that is giving me this error when analyzed

"The pixel type of the raster associated with the mosaic dataset item indicates that pixel values might be outside of the range allowed by the mosaic dataset."

The thing I do not get is that the MD is set to the same pixel depth as the source rasters? I do have a function applied to change meters to feet...

MD properties

I don't understand why this error is showing up...

Re: Pixel depth problem Mosaic Dataset Analyzer: Error 70127

DanPatterson_Retired — Fri, 14 Apr 2017 01:27:09 GMT

I am sure it is nothing, but the nodata value is ever so slightly different and the 'edit' option appears in the latter. I presume the elevations are in keeping with other values even when converted to feet? and does it work without the function applied?

Re: Pixel depth problem Mosaic Dataset Analyzer: Error 70127

forestknutsen1 — Fri, 14 Apr 2017 18:54:27 GMT

Ya, it is weird. I was thinking that in theory one could have a "large" 32bit float then when one divides by .3048 to go from meters to feet (the function) the output could be larger then then the 32bit float container. But even when I set the pixel depth to 64bit it still does shows the error. The data in the MD looks fine however. I don't know. I want to just ignore it. But I am having some problems getting this MD to work so I am trying to track down all errors.

Re: Pixel depth problem Mosaic Dataset Analyzer: Error 70127

DanPatterson_Retired — Fri, 14 Apr 2017 19:00:56 GMT

I don't think those elevations Single-precision_floating-point_format

Re: Pixel depth problem Mosaic Dataset Analyzer: Error 70127

forestknutsen1 — Fri, 14 Apr 2017 19:16:02 GMT

Right, my elevation values are always going to be fine in a 32bit floating point. But arc may not be looking at what the values are. But just at the range of possible values.If this is the case I think esri should think about demoting this issue from a error to a warning.

Also the error is gone if I remove the function.

Re: Pixel depth problem Mosaic Dataset Analyzer: Error 70127

DanPatterson_Retired — Fri, 14 Apr 2017 19:28:55 GMT

Which makes it stranger since the raster function list here applies to rasters and mosaic datasets, so one would presume an Arithmetic multiplication would not upscale the result. What about Unit Conversion?

Re: Pixel depth problem Mosaic Dataset Analyzer: Error 70127

forestknutsen1 — Fri, 14 Apr 2017 19:36:43 GMT

Same error.

Re: Pixel depth problem Mosaic Dataset Analyzer: Error 70127

DanPatterson_Retired — Fri, 14 Apr 2017 20:07:45 GMT

I give up... meters are better anyway I would pass this on to tech support, since no one else monitoring the thread has any ideas to share either

Re: Pixel depth problem Mosaic Dataset Analyzer: Error 70127

DanPatterson_Retired — Fri, 14 Apr 2017 20:17:55 GMT

or this....

Re: Pixel depth problem Mosaic Dataset Analyzer: Error 70127

forestknutsen1 — Fri, 14 Apr 2017 20:23:36 GMT

Hahaha, sure they are. Project requirement is for feet. My source rasters are mixed units in the vertical so I will have to covert no mater what....

I may call ersi next week on it... Who knows maybe an esri person will see this post Monday.

Re: Pixel depth problem Mosaic Dataset Analyzer: Error 70127

Prashant_MukeshMangtani — Fri, 21 Apr 2017 23:01:16 GMT

It looks like the function that you applied changes the pixel type of the item(s) to a different pixel type than the mosaic. You should be fine with sticking to 32bit floating point. Fixes for one item with the problem or multiple items below assuming you added the unit conversion function.

Easy fix for one item: Use the error in the analyzer (right-click) and select the associated item. Then use the raster viewer (select the raster cell in the selected row and click on the small arrow inside the cell)->Functions tab. Right-click on the unit conversion function function->Properties->General page set output pixel type to the pixel type of the mosaic.Click OK then click Apply and you should be good to go.

Multiple items: Use the error in the analyzer (right-click) and select the associated items. Use the batch function editor (right-click on footprint sub-layer of the mosaic->Selection->Batch Edit Raster Functions) and pick the Edit option->Search by function name->Pick the Unit conversion function->General tab set output pixel type to the pixel type of the mosaic->Click Next->OK->Next->Finish. That should fix all the items.

Please let me know if this works or if you have any questions.

-Prashant

Re: Pixel depth problem Mosaic Dataset Analyzer: Error 70127

forestknutsen1 — Mon, 24 Apr 2017 20:04:10 GMT

Thanks for the reply Parshant. I did a test with a subset of the data. I still get the same error when I switch from an arithmetic function to a unit conversion function to change meters to feet.

I did get the mosaic to mostly work. The pixel depth error does not appear to be causing problems that I can see...

Re: Pixel depth problem Mosaic Dataset Analyzer: Error 70127

Prashant_MukeshMangtani — Mon, 24 Apr 2017 20:19:32 GMT

Forest,

Did you change the output pixel type of the function you used to match your mosaic dataset's pixel type? What function you use matters less than setting the right output pixel type. That is what is causing the analyzer to throw the error.

-Prashant

Re: Pixel depth problem Mosaic Dataset Analyzer: Error 70127

forestknutsen1 — Mon, 24 Apr 2017 20:44:50 GMT

Hahaha - I did not notice that part of the dialog! It is working now. Thanks for the help!

Re: Pixel depth problem Mosaic Dataset Analyzer: Error 70127

Prashant_MukeshMangtani — Mon, 24 Apr 2017 20:48:34 GMT

You are very welcome Glad I could help.