[Qgis-user] pixel counts

[Aaron Stoler]

Hi all,

I am brand new to QGIS and have pretty minimal GIS experience, so I
apologize for my crude terminology. I was recently handed a large number of
ARCInfo files (adf) containing information on species abundance at 30 m2
resolution. Each file (well...group of files since they are adf files)
describes the abundance of a single species. I would like to analyze single
species density within a custom-defined polygon. Species abundance within a
30 m2 is defined by color intensity (black = 0 abundance, white = max
abundance).

I have figured out how to view single adf files as raster layers in QGIS.
>From there, it seems like I should be able to generate a polygon and tell
the program to analyze pixel count for each level of color intensity.

I haven't had much GIS training, but I would really like to conduct an
experiment that needs this data. Could someone please point me in the right
direction?

Thank you for your time,
Aaron
abstoler at gmail.com
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