[gdal-dev] Problem encountered in stitching/merging the raster files

[Jean-Claude Repetto]

On 29/08/2014 04:09, precy wrote:
> I have 4(sometimes 5) raster images and projected these using gdalwarp. I've
> tried stitching these images using these commands gdal_merge.py -n 0
> -a_nodata 0 -of GTiff -0 output.tif a.tif b.tif c.tif d.tif e.tif. The first
> 3 images was stitched and the last 2 images was also stitched, but they were
> stitched separately but saved in one image.How will I solve this?
>
> I want the 5 raster to be stitch(mosaic) properly without spaces in between.
> I have attached here the output image(as what you will observe there was a
> space/cut in between the stitched images). Thanks!
>
> <http://osgeo-org.1560.x6.nabble.com/file/n5158957/output.gif>
>
> Note: The original image was a tif file, I just converted it in gif because
> it returned error due to the limit of the message size.


You can use gdalwarp to reproject and merge several maps at the same time :
gdalwarp -t_srs srs_def a.tif b.tif c.tif d.tif e.tif output.tif