[gdal-dev] openev.py "classify" option

Hi all, Using gdalwarp, I have generated two mosaic images for same area. MOSAIC1 :One image is 2-byte(12-bit data values : 0-4095) and MOSAIC2 : Another is 1-byte ( actually having 0-3 values only) I am trying to view the images using openev. First I open 2-byte mosaic (MOSAIC1) then I overlay

[gdal-dev] geographic vs projected coordinate system

Hi all, I am a novice to geospatialrelated terminology...and going through some literature to understand better.. Could someone please tell difference btwn geographic and projected coordinate system... I mean, I am not able to imagine how I can see an (satellite) image on screen ( flat surface)

Re: [gdal-dev] gdal_merge does not mosaic

Thanks Frank. I have been able to solve the issue. Using your clue, I am reprojecting all the input images to common projected coordinate system (of the image which will be at mosaic'c center) and then mosaicing. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/gdal-merge-do

Re: [gdal-dev] gdal_merge does not mosaic

img1.img img2.img I have attached the inputs images ( reduced resolution). -- View this message in context: http://osgeo-org.1560.x6.nabble.com/gdal-merge-does-not-mosai

Re: [gdal-dev] gdal_merge does not mosaic

Hi All, Could you please suggest any open source library/API/ command line tools (on Linux) that can mosaic images of the kind I posted earlier (with different paramters etc..)? Also if I am to use gdal_merge then I will have to reproject all input images to one projcs and then try mosaicing ?

Re: [gdal-dev] gdal_merge does not mosaic

Thanks! On Tue, Jun 4, 2013 at 2:57 PM, Rahkonen Jukka [via OSGeo.org] < ml-node+s1560n5057691...@n6.nabble.com> wrote: > adi_khan gmail.com> writes: > > > > > <http://osgeo-org.1560.x6.nabble.com/file/n5057631/inputimgs.jpg> > > <http://osgeo-org.156

Re: [gdal-dev] gdal_merge does not mosaic

Hi all, here please find the input and output I used. The attached images : 1. First image is a snap

Re: [gdal-dev] gdal_merge does not mosaic

Thanks for your reply frank. I understand that the GDAL I am using is ancient, but considering 'upgrading to other version' not an option could you tell me if there's a way I can mosaic using 1.4.5 only? Input images are spatially distinct. And the output image I.e. mosaic.img was not already crea

[gdal-dev] gdal_merge does not mosaic

I am using gdal 1.4.5 and wish to use gdal_merge to mosaic *.img images. The command runs successfully (no error is reported) but the output file contains the last input image and not mosaiced output. I use openEV to see the output file. This is how is used the command : gdal_merge.py -of HFA -o