eendrulat

No Data values in Mosaic Dataset

Discussion created by eendrulat on Mar 24, 2011
Latest reply on May 10, 2011 by hlzhang525
I have a large mosaic dataset based on individual rasters of orthophoto quads (LZW compressed TiFF Format). Many of these rasters contain NoData values for pixels within the image extent. By default, when this mosaic is viewed in ArcGIS desktop, the pixels are rendered as an opaque white color. These pixels stand out, and make the resulting image look terrible (see screenshot).
In ArcMap, I know you can specify how the NoData pixels are displayed, but is there a way to change the default NoData color  (e.g., to Black) for the mosaic dataset? If not for the mosaic dataset, the for an image service (we're using AGS Image ext. to publish the data)?

Based on my understanding of the mosaic datasets documentation, the 'Define Mosaic Dataset NoData' tool does not quite do this, it's more intended to create a mask for nodata pixels at the boundaries of an image.

Thanks in advance!

Erik

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