I have an image (RGB) with a lot of NaN pixels (black) and I want them to have no color for visualization on a map.

My raster is derived surface reflectance values from Sentinel 2. After atmospheric correction I stacked the blue, green and red band in R and exported the rasterStack (.tif) to ArcGIS Pro for making a map of the RGB raster on a basemap.

I have added a basemap that cannot be seen due to the black color and when I click the pixels I also see that they have No Data (nan)

But I cant seem to get rid of the black color. When I look in Symbology, background and NoData already is set to No Color. When I try to change the color of No Data, it has no effect.

How can I make my black NaN pixels no color/transparent using ArcGIS Pro?

Edit: I have added a picture showing the edge of my raster against the basemap, and the information I get when I click a black pixel.

  • 1
    Probably they have no color but your background looks black. Check by placing a big colored polygon underneath. – user30184 Oct 6 '17 at 7:57
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    What makes you think that black color is No Data? – FelixIP Oct 6 '17 at 8:17
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    In all the years I've been using raster datasets I have never seen ArcMap or the new Pro return the value "nan" for a NoData cell. Edit your question and describe your raster format. Where did it come from, what processing had you done to it? Making NoData cells transparent should be a trivial task. – Hornbydd Oct 6 '17 at 9:09
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    So the source of the dataset you are attempting to display in Pro is this stacking process in R? I've never used R but that is where I would start looking, see if there is a parameter setting to define your NoData value. – Hornbydd Oct 6 '17 at 9:24
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    Suggest you read this thread. – Hornbydd Oct 6 '17 at 9:26

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