[osgeo4w-dev] gdal_merge_mosaïc TIF

[Matt Wilkie]

Also see http://trac.osgeo.org/gdal/wiki/UserDocs/GdalMerge which has a 
batch file for doing the same.

cheers,

matt wilkie
--------------------------------------------
Geographic Information,
Information Management and Technology,
Yukon Department of Environment
10 Burns Road * Whitehorse, Yukon * Y1A 4Y9
867-667-8133 Tel * 867-393-7003 Fax
http://environmentyukon.gov.yk.ca/geomatics/
--------------------------------------------


Matt Wilkie wrote:
> Bonjour Fabienne,
> 
> The error "line is too long" is from CMD not gdal_merge. There are 
> simply too many characters in the variable %liste%. A work around is to 
> read the input files from a text file. E.g.
> 
>   cd /d c:\image
>   dir /s/b *.tif > input-images.txt
>   set opts= -co bigtiff=yes -co tfw=yes
>   gdal_merge %opts% -o results.tif --optfile input-images.txt
> 
> Salut!
> 
> matt wilkie
> --------------------------------------------
> Geographic Information,
> Information Management and Technology,
> Yukon Department of Environment
> 10 Burns Road * Whitehorse, Yukon * Y1A 4Y9
> 867-667-8133 Tel * 867-393-7003 Fax
> http://environmentyukon.gov.yk.ca/geomatics/
> --------------------------------------------
> 
> 
> fabienne picot wrote:
>> Hi
>>
>> I'd like to assemble images *".TIF" which total size is 8Go, to have 1 
>> image which size would be the smallest possible (with the best quality 
>> of course!).
>> - I add "@cmd.exe /V:ON" at the end of OSGEO4W.BAT to activate 
>> additional functionalities to create a list of files in the form of 
>> variables.
>> - Then:
>>
>>     *
>>
>>       cd /d c:\Image
>>
>>     * set liste= [ ]
>>     *
>>     * for %c in (*.tif) do set liste=%c !liste!
>>     *
>>     * gdal_merge -of GTiff -co "TFW=yes" -co "BIGTIFF=yes"
>>       "c:\Image\Test.tif" %liste%
>>
>> But the prompt answers: "THE ENTERED LINE IS TOO LONG".
>>
>>
>> What it doesn't like?
>>
>> Is it the correct method to assemble and reduce image'size?
>>
>>
>> Best regards
>>
>>
>>
>>
>>
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