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Reclassing Rasters

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#1
angel.spatial

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Hello again,

I am wondering how to reclass a range of pixel values in ArcMap. For instance:

RGB = 255, 255, 255 to be reclassed to become 0, 0, 0

Or any variation thereof.

Thanks as usual,

angel
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#2
Casey Greene

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I think the simple answer is (but there could be a more complicated one):

start at Layer Properties
>Symbology
> right click on the desired color
> select "properties for selected symbol(s)" from the drop menu
> click on the fill color box
> click "more colors" at the bottom

What is it for?
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#3
Rob

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or if you have access to spatial analyst, there is a reclass tool in the toolbox that does just this.

#4
frax

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you might need to reclass each band separately and set up a new stack, if it is a multi-band image. Think of each band as a separate raster dataset.
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#5
angel.spatial

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I see. I will try spatial analyst and see how that goes.

Changing the symbology will not change the origianal raster.

I will look at each band individually and play with that.

Thanks,

angel
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