[gdal-dev] advice on using the moving average command

[Andrew Wood]

Dear List members,

I am requesting help again on the problem below.  If anyone has used the
moving average functionality in gdal_grid, it would be great to see your
example, especially if you have produced outputs that either are netcdf or
ascii grids, or could be converted to them via gdal_translate or imagemagik
convert.

Regards,
-Andy

On Tue, Jan 26, 2010 at 11:10 AM, Andy Wood <awood at 3tier.com> wrote:

> Dear List,
>
> I'm a novice to gdal and have been trying to apply the moving average
> algorithm to CSV (or gridded) data to produce grids in either ESRI arc/info
> Ascii or NetCDF format.  I've tried a range of command variations with no
> success (just get the usage message).
>
> A typical attempt looks like the following:
>
> > gdal_grid -a
> average:radius1=2.0:radius2=2.0:angle=0.0:min_points=4:nodata=-99.0 -outsize
> 48 48 -txe -107.5 -104.5 -tye 22.5 25.5 -of AAIGrid -l robf robf.m2.csv
> robf.m2.MA.asc
>
> with the CSV data file (robf.m2.csv) looking like:
>
> -104.53125,22.53125,4.631
> -104.59375,22.53125,3.988
> -104.65625,22.53125,2.785
> -104.71875,22.53125,2.660
> ...
>
> The grid I'm trying to create would be in a geographic (decimal degree)
> projection; I'm not sure if that matters.  I'm working on mac osx.
>
> I don't think I have the basic syntax down, and if anyone could help me
> with it, I think that would get me past the hump and open up all the other
> commands as well.
>
> Thanks in advance,
> -Andy
>
>
>
>
>
>
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