[Qgis-user] GDAL and .nc (netCDF) and qgis

[M.E.Dodd]

Thanks for the replies on this one.
I am indeed looking at other tools to open netCDF files.
However I just noticed that in qgis 1.4 there is a .nc option (well two actually presumably different formats) when opening a raster image.  So I tried it, unfortunately the file opened upside down and possibly a little smaller than it should have done.
Has anyone else used this in qgis to confirm the qgis part is working OK so I can go back to the data provider and check the original data itself.

-----Original Message-----
From: Mike Toews [mailto:mwtoews at sfu.ca]
Sent: 07 January 2010 18:19
To: M.E.Dodd
Cc: qgis-user at lists.osgeo.org
Subject: Re: [Qgis-user] GDAL and .nc (netCDF) and qgis

M.E.Dodd wrote:
> I would like to open some large gridded met data files, produce means of the values for each grid square (data for each square are given each year for a number of years and I want a mean of all the years) and write the data out again showing just the means per grid square.
>

I would look at other tools for doing calculations on multi-dimensional
NetCDF files. I've used NCO in the past for this,[1] which can average a
time dimension in a 3D grid to produce a 2D grid (which can be converted
to any other raster format using GDAL). You can do much more with NCO
utilities. However, NCO is not user-friendly, since it is command-line
work, requires a lot of documentation reading to understand the usage,
and is available for almost all operating systems except MS Windows.

[1] http://nco.sourceforge.net

-Mike


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