A utility used to merge small image tiles to create a bigger image

learn more… | top users | synonyms

1
vote
1answer
56 views

Merge artifacts and flow accumulation

I've been struggling with this problem for awhile. Here is a curvature raster to illustrate the problem http://i.imgur.com/IIjYAov.jpg I'm using 10m DEM rasters from the NRCS Data Gateway for a large ...
1
vote
0answers
280 views

Merge overlapping DEMs with irregular boundaries

I have a 10m DEM covering part of a state, a 20m DEM covering the whole state, and a 90m DEM covering the whole country. How can I merge them together, getting the best quality available in each area? ...
0
votes
0answers
81 views

Unexpected gdal_merge result

What I'm trying to do is to merge to geotif files with gdal_merge, but the result is not what I expected. Here are the files I'm trying to merge. gdal_merge.py -n 0 -a_nodata 0 -o result.tif ...
0
votes
0answers
116 views

Combine two grids with a small area of overlapping pixels to a new raster in QGIS/SAGA

Hint: the first grid is 1 byte and the second is 2 byte The new raster should have a blended transition. How can i do this?
0
votes
0answers
104 views

Merge/mosaic categorical rasters in QGIS/GDAL

I am attempting to make yearly bins of some monthly MODIS data for all of the US. The cells of the raster are defined with Julian dates indicating the date at which a burn event took place. After ...
0
votes
0answers
85 views

gdal2tiles colorpallete error

merged few files using gdal_merge gdal_merge.py -pct -o 713.tif sa713.tif na713.tif wa713.tif ea713.tif When i try to make tiles it says gdal2tiles.py: error: Please convert this file to RGB/RGBA ...
0
votes
0answers
130 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 ...