extracting values from raster

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2
08-01-2013 05:00 AM
ChristianAndersen
New Contributor
Hi all,

Its been some years ago since I worked with rasterdata for real, so I have to brush up my knowledge on this subject. Hope you guys is able to help. 🙂

I have a raster file (img) containing gridcells with values represent floodvalues (0,1 representing 10 cm water on the surface). I want to extract the cells with more than 10 cm water on the surface. I´ve tried with the extract by attributes, but somehow there isn´t a attribute to select?! If I use the info selection on one cell I get the stretched value and the pixel value (which is equel to the amount of water) so there must be a value somewhere that I should be able to extract on.

What am I missing? Can somebody please guide me in the right direction?

Thanks in advance

Christian
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2 Replies
MarkBoucher
Occasional Contributor III
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DanPatterson_Retired
MVP Emeritus
are you using the raster calculator (map algebra in ArcToolbox)?  if it is an integer grid you want to query for values > 1
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