Title: Grid creation and export data to *.asc
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Hi Luciano
On 12/21/2012 5:30 PM, Luciano La Sala wrote:
Hello
Folks,
Sorry to
re-send but I got no response and I am not sure why. If
my question was not clear I can always rewrite it.
Luciano
Hello QGIS users,
I have a raster image of human population
counts (LandScan) of approximately 1 km resolution. I need
to take each cell of the raster one by one and retrieve the
population count for that cell.
To do this,
I was told to create a grid theme of population density -
based on the grid themes specifying population counts and
area.
Export
population count and population density files from ArcView
to *.asc files.
Since your Landscan grid is at resolution 1
km, then the population count and density (per sq km) should be
the same.
Using the GRASS module r.out.xyz you can
get an ASCII text file with three columns: X,Y,value. The X-Y
are cell enters, and value would represent Population count.
I am not
sure how to create the grid nor how to export pop count and
density files to *.asc. Any tips? Thank you in advance!
Luciano La
Sala
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