A utility used to merge small image tiles to create a bigger image
4
votes
1answer
68 views
What is the correct way to merge adjoining raster images?
I am trying to create a raster base layer from NAIP ortho imagery. Unfortunately for me, the area of interest is very near the intersection of four image files. I have tried a few approaches to ...
1
vote
1answer
45 views
gdal_merge.py with single band raster
I'm trying to mosaic the True Marble world imagery 250M geotiffs using gdal_merge.py though one of them doesn't have RGB bands like the rest and gdal_merge fails (same number of bands is listed as a ...
1
vote
0answers
20 views
how to rename the band-names of a layer stack?
I created a layer stack of 20 images (all GTiff-files) using the gdal_merge tool in QGIS, available at:
raster > miscellaneous > merge
The result is a GTiff layer stack of the 20 images, but ...
0
votes
1answer
84 views
Is it possible to use GDAL to combine (rather than mosaic) rasters
Is there a GDAL command which can combine multiple rasters so that a unique output value is assigned to each unique combination of input values, like the combine command in ArcGIS?
gdal_merge seems ...
0
votes
0answers
30 views
gdal_merge.py aligns incorrectly at the seam of two GeoTiffs
I am trying to merge four GeoTiffs from the National Elevation Dataset (EPSG: 4269) into a 2x2 DEM using gdal_merge.py. For some reason, when it merges the upper two NED rasters, gdal produces a seam ...
3
votes
2answers
436 views
How to add color interpretation for raster bands using GDAL?
I have 3 separate 1-band GeoTIFF files. The color interpretation for band is gray. I want a 3-band RGB file. I've used gdal_merge.py
gdal_merge.py -separate file1.tif file2.tif file3.tif -o ...
1
vote
1answer
350 views
What's the difference between gdalwarp and gdal_merge for mosaicing
I wanted to merge around 20 dem tiffs each around 100MB, and I used gdalwarp (I know about virtual file option):
gdalwarp $(list_of_tiffs) merged.tiff
However this command took very long time, and ...
3
votes
1answer
72 views
Two versions of gdal_merge and two diffrent effects
Is there any possibility that two diffrent versions of gdal (1.7.3 and I believe 1.9.0) can give me two diffrent results with given:
two RGB files.Each twith 3 layers - input1.png and input2.png
...
0
votes
0answers
82 views
gdalwarp instal of gdal_merge with -separate option
Is there any way to produce merged img file from two png files using gdalwarp just the same way gdap_mege with option -separate does it?
I just need two, three-layered files to be merged into one, ...
4
votes
1answer
231 views
gdal_merge produces incomplete mosaic
I am using GDAL 1.91 on a Windows 7 machine. I have been mosaicing large numbers of rasters together and most of the time this process works exactly as expected. However a very few of my mosaics ...
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