arcgis-desktopimageryraster
I have an Image.sid that has a white border which is No Data.
I've tried using Clip Raster Tool with no success.
I've also changed the symbology value for No Data to be transparent.
I'd like to remove No Data if possible or simply trim / erase the white border.
How can I do this?
Have you tried changing these settings? In your instance, you want (255, 255, 255) to be displayed as no color (transparent). If the pixels represented as white are 'NoData', then you can set that option to no color as well.
Go to ArcToolbox -> Spatial Analyst Tools -> Map Algebra -> Raster Calculator
In the raster calculator, you can either write SetNull("raster_name"<0.92, "raster_name"). Or Double click SetNull from the menu under Conditional menu, then double click the raster layer from raster layer listed in the Table of content from inside raster calculator and add the above expression, as you can see below.
Best Answer
Apparently there are some issues involving compression in SID files, have you seen some of the possible solutions on the ESRI forum?
Possible 1 -- Set the likely NoData color vector (0,0,0) to transparent.
Possible 2 -- Multiple possibilities, focusing on converting to a format over which you have more control.