topic Re: Image server: how to maintain raster colors in ArcGIS Image Server Questions

Image server: how to maintain raster colors

HelderSantiago — Fri, 11 Jun 2010 13:23:43 GMT

Hi everyone,

I'm using Image server for the display of one-band rasters. Those raster are made from point polygons with the kernel density function and their purpose is to give information about contamination.

Those rasters are .tiff, one band 32 bites floating points.

I would like them to display on client side with the colors we have choosen. In our center we are applying a personal color ramp to the raster's layer. The idea would be to keep the colors in the raster directly. I know that we can use colormaps for that but here it's a .tiff 32 bites floating points so it does not support colormaps.
Does someone has another idea?
Thank you very much for your answers

Re: Image server: how to maintain raster colors

GünterDörffel — Tue, 22 Jun 2010 13:14:06 GMT

Hi,

does that mean you will need more than 256 individual colors to display?
Besides the fact that there will be no appropriate legend to that this sounds challenging ...

You can actually define colors for a 32 bit floating point dataset ... if you define it as being elevation and visualize it with lets say a shaded relief process which uses a custom xml file for the relief colors ... and here you go - this is an xml file with range definitions in it and every range can get a color definition in RBG ... give it a try ... but for many values the definition of the XML might become anoying...