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

[Andrew Wood]

Dear List members,

For a third time, I am requesting assistance on the issue below.  Does
anyone in this community know how to use the moving average command to
produce a grid from a CSV?  It must be a simple issue.   gdal seems like a
promising piece of software, but is unlikely to be of much use to anyone if
the community is so small that it cannot address simple requests from new
users.   For comparison, the first time I emailed the GMT users list, I had
a response within hours.

Thanks,
Andy
__________________________
Andy Wood, PhD
Lead Scientist
3TIER Inc.
2001 6th Avenue, Suite 2100
Seattle, WA 98121
www.3tier.com


On Sat, Jan 30, 2010 at 10:52 AM, Andrew Wood <andywood.home at gmail.com>wrote:

> 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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