[gdal-dev] gdal_translate file naming for sds and HDF4 files

[Etienne Tourigny]

I have created a ticket and a patch for this problem

http://trac.osgeo.org/gdal/ticket/5119


On Fri, May 31, 2013 at 3:28 PM, Etienne Tourigny
<etourigny.dev at gmail.com>wrote:

>
>
> On Fri, May 31, 2013 at 1:04 PM, Jonathan Greenberg <jgrn at illinois.edu>wrote:
>
>> Thanks -- I did notice it was an earlier version (switching to the latest
>> OSGeo4W), I apologize for not checking the latest, but as Etienne
>> confirmed, the bug seems to be there in the latest as well.  The HDF files
>> from various sources are so odd when it comes to naming layers, that this
>> SDS argument is really helpful (if it would name the files correctly).
>>
>> Speaking of -sds --> perhaps I can request that gdal_translate allow for
>> a layer # flag rather than the full layer name for subdataset files?  Is
>> this relatively easy to implement (since gdalinfo seems to already have the
>> capability)?
>>
>
> that depends on the driver actually... for hdf4 files normal syntax uses
> number, whereas the netcdf driver uses variable name (which is more
> informative). Changing this behaviour involves tweaking the driver code,
> not gdal_translate.
>
> e.g.
>
> SUBDATASET_1_NAME=HDF4_SDS:MODIS_L1B:GSUB1.A2001124.0855.003.200219309451.hdf:0
>
> SUBDATASET_1_NAME=NETCDF:"sst.nc":lon_bnds
>
> Now perhaps you mean to select a single dataset by number, without the
> full SUBDATASET_X_NAME syntax ?
>
> such as
> gdalinfo -subdatset 1 file.hdf
>
> which would be equivalent to
> gdalinfo HDF4_SDS:file.hdf:0
>
> that would be marginally handy, but not much as the rest of gdal uses the
> driver:file:subdataset syntax.
>
>
>> --j
>>
>>
>> On Thu, May 30, 2013 at 3:50 PM, Etienne Tourigny <
>> etourigny.dev at gmail.com> wrote:
>>
>>>
>>>
>>> On Thu, May 30, 2013 at 4:46 PM, Jukka Rahkonen <
>>> jukka.rahkonen at mmmtike.fi> wrote:
>>>
>>>> Jonathan Greenberg <jgrn <at> illinois.edu> writes:
>>>>
>>>> >
>>>> > Folks:
>>>> > I'm using a Windows install of GDAL 1.7.0 (FWTools) -- when I run:
>>>> >
>>>> > gdal_translate -sds -of "GTiff" [some.hdf] "myoutput"
>>>> > The output filenames do not have the .tif extension.  If I set the
>>>> output
>>>> file to "myoutput.tif", it appends the "layer numbers" to the end of the
>>>> file, e.g. myoutput.tif1.  Any tricks to getting the naming working
>>>> properly
>>>> (myoutput1.tif would be what I'd expect)?
>>>>
>>>>  Hi,
>>>>
>>>> First, acquire more fresh GDAL, current version is 1.10. Use OSGeo4W or
>>>> download Windows binaries from http://gisinternals.com/sdk/
>>>>
>>>
>>>  actually the same thing happens with gdal-1.10. I will prepare a bug
>>> report and fix.
>>>
>>>
>>>>
>>>>
>>>> Then, perhaps you should use gdalinfo first for seeing the exact names
>>>> of
>>>> layers as GDAL understands them and use such a layer name as input
>>>> instead
>>>> of [some.hdf]. Read usage examples from
>>>> http://www.gdal.org/frmt_hdf4.html
>>>>
>>>
>>>  the idea of using the -sds argument is to generate an output file for
>>> each subdataset, without having to search for subdataset names
>>>
>>>
>>>>
>>>>
>>>> -Jukka Rahkonen-
>>>>
>>>> _______________________________________________
>>>> gdal-dev mailing list
>>>> gdal-dev at lists.osgeo.org
>>>> http://lists.osgeo.org/mailman/listinfo/gdal-dev
>>>>
>>>
>>>
>>
>>
>> --
>> Jonathan A. Greenberg, PhD
>> Assistant Professor
>> Global Environmental Analysis and Remote Sensing (GEARS) Laboratory
>> Department of Geography and Geographic Information Science
>> University of Illinois at Urbana-Champaign
>> 607 South Mathews Avenue, MC 150
>> Urbana, IL 61801
>> Phone: 217-300-1924
>> http://www.geog.illinois.edu/~jgrn/
>> AIM: jgrn307, MSN: jgrn307 at hotmail.com, Gchat: jgrn307, Skype: jgrn3007
>>
>
>
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