Dynamic range adjustment error in legend with some styles

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04-26-2021 02:04 AM
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DiegoGuidi1
New Contributor II

Hello everyone, 

I'm using with arcgis enterprise portal some DTMs published as Imagery Service, and I see some strange error in the legend and in the map rendering.

When I use configuration like this one:

DiegoGuidi1_0-1619428258450.png

and, generally speaking, when I use "continuous" color ramps (from dark blue to light blue, from dark gray to light gray, from dark red to light red, and so on) the visualization works as expected, but if I use other color ramps that not use the same color, like this one:

DiegoGuidi1_3-1619428030369.png

I see something strange in the legend and in the map:

first "render":

DiegoGuidi1_2-1619427993952.png

 

second "zoom out":

DiegoGuidi1_1-1619427961001.png

 

third "zoom out":

DiegoGuidi1_0-1619427936076.png

 

Basically, the legend and the map it's ok at start, then becomes broken at first zoom in (or zoom out), then becomes ok at the next zoom in/out, and so on.

Please consider that when status of the legend is maintained when I pan the map, only when I zoom I see the problem.

I tested with ArcGIS Enterprise 10.8.1 with patches from the march 2021 (not April 2021), using the integrated map viewer (but the same problem appears using developer app builder 2.18 and the integrated map builder).

Please note too that if I configure the raster dynamic rendering using "minimum and maximum" (instead of percent clip) the problem still remains.

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DiegoGuidi1
New Contributor II

Actually the steps to reproduce the problem are quite simple:

  1. Download a sample geotiff, I used this one https://land.copernicus.eu/imagery-in-situ/eu-dem/eu-dem-v1.1?tab=download&selected:list=dem-v1-1-e4...
  2. Publish (I used ArcCatalog) as Imagery Layer in an ArcGIS Enterprise 10.8.1 Server
  3. Create a WebMap in an ArcGIS Enterprise 10.8.1 Portal (using the integrated map viewer)
    DiegoGuidi1_0-1620045546345.png
  4. Configure the visualization using this representation
    DiegoGuidi1_1-1620045546359.png
  5. Select the legend in the upper left corner
  6. Zoom in/out and see how legend changes (and colors of the raster, too)
    DiegoGuidi1_2-1620045546408.png

Hope to be helpful

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DiegoGuidi1
New Contributor II

found a reference in the forum: there's a mention to 

  • BUG-000132637: The color ramp on an image service changes when scale is changed in ArcGIS Enterprise portal map viewer
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