Hi all,
I have a GeoTiff file covering the whole globe at approx. 1km
resolution. And I have a shapefile containing say 20 of polygons.
For each of the 20 polygons, I want to know the mean value of the raster
data falling inside the polygon, and possibly more statistics (max, min,
medeian, std, .
Hi again,
I played around a bit and now it's working. I needed to add four global
attributes to the HDF4 file:
- TransformationMatrix
- AREA_OR_POINT
- Projection
- Signature
What I don't understand is why Signature is needed. I mean, even without
Signature, the file contains all necessary infor
Etienne,
thanks for your input.
> Why don't you simply use the netcdf api to create a GMT file (which
> uses the netcdf file format)̣?
The software which creates these HDF files is not developed by me, and its
developer is unwilling to implement writing of netcdf files. However, if
I'd tell him
Hi there,
when creating HDF4 files outside of GDAL, which metadata do I have to
write to
the file such that GDAL can subsequently correctly read the data? In the docs
I read that only HDF4 files created with GDAL or certain other HDF4 types are
recognized. However, the files are created "by hand"
anks for your insight,
Andreas.
>
> Joaquim
>
> Sent from my iPadiola
>
> On 14/12/2011, at 18:32, "Andreas H." wrote:
>
>> Travis,
>>
>> yes, thanks, I had already found that in the documentation. I'm just
>> wondering what e.g. 'bil
> Yes gdalwarp support various resampling methods
>
> To use different resampling methods use the -r flag followed by the method
>
> eg
>
> gdalwarp -r near ..
> gdalwarp -r bilinear .
>
> etc...
>
>
>
>
> On 14 Decembe
Hi again,
another question which shows I'm just starting to see if GDAL can actually
make my life easier :)
I'm working with atmospheric trace gas profiles, so one data"point"
consists of latitude, longitude (point or polygon, whichever is easier)
and many vertical layers, say 60 floating point v
input_1m.tif output_10m.tif
>
> You may have an issue determining the output resolution as I believe
> the resolution will be in decimal degrees rather than arc-seconds.
>
> Regards
>
> On 13 December 2011 14:52, Andreas H. wrote:
>> Hi,
>>
>> let's say I h
Hi,
the subject basically says it. What would be the way to go if I want to
store multiple altitude layers within a file? The grid contains 64
latitudes, 128 longitudes, and 60 altitude levels. How do I need to create
the file in order to be able to use tools like gdalwarp to modify the
data/grid?
Hi,
let's say I have a GeoTIFF file with a global grid in a 30 arc-second
resolution. Which would be the appropriate GDAL command to spatially
down-sample this file to say 0.125°?
Thanks for your insight,
Andreas.
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> I would like to add many of these fixes and features to the stable 1.8
> series, but new features cannot be added there without explicit
> permission of the PSC or an RFC (as per RFC 3).
> If anyone would wish that to happen, please express yourself!
That sounds great to me. I certainly wish thi
> I can see that it is trying to link to /usr/local/lib/libmfhdf.a
> instead of your specified /hb/USER/lib/epd-7.1-1-x86_64, and something
> similar for hdf5
>
> Sometimes it's easier to use the default system libraries, or remove
> them if you are using more recent ones avoid conflicts like the
Hi everyone,
I'm trying to compile GDAL 1.8.1 from source on a x86_64 machine, compiling
against the libraries which come shipped with Enthought's Python
distribution.
So, what I'm doing is this:
$ export CFLAGS="-I/hb/USER/lib/epd-7.1-1-x86_64/include -fPIC"
$ export CXXFLAGS="-I/hb/USER/lib/ep
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