Clipping raster-image increases file size

المشرف العام

Administrator
طاقم الإدارة
Working with QGIS 2.4.0 Chugiak I have a question regarding the clipping of raster images. I have an aerial picture that I want to clip using the extents of a shape file. So far so good, I used the raster/extraction/clipper tool to do this. The prolem is that the file size of my output raster is nearly three times larger than the original file (i.e. 725.283 and 249.693 kb respectively), whereas it covers a smaller surface.Why is my file larger? And is there any way to 'set' the output file size?

The help function of clipper refers to the following page: http://www.gdal.org/gdal_translate.html Though I cannot make much out of it.

FYI, I am relatively new to QGIS as I used to work with ArcMap.

Cheers



أكثر...
 
أعلى