Tagged Questions
0
votes
0answers
12 views
How to create symbology? [duplicate]
Please suggest how to create symbology in QGIS? As I am Infrastructure layer with the help of QGIS and I want to represent different roads with different colors and widths but right now I am unable to ...
7
votes
2answers
108 views
How to perform enhancement operations on an satellite imagery in QGIS?
I am a new user of QGIS please suggest how to perform image enhancement operations on an satellite imagery like ratioing, contrast stretching, edge engancement, filtering etc. in QGIS?
2
votes
1answer
470 views
QGIS and satellite images band combination
When I add a satellite images as a raster in QGIS:
1. Why the image is changed, it looks like it has only one band?;
2. where is a tool for band combination?
Thanks!
3
votes
2answers
588 views
Net Primary production (NPP) calculation
When I calculate Net primary production (NPP) for a local scale, what kind of software should I use? I always use ENVI, ERDAS, ARCGIS and IDRISI. Is it possible to use these programs for NPP ...
3
votes
1answer
175 views
About FAPAR calculation
I want to calculate FAPAR in different land cover types using max and min value of NDVI. I have a raster image with 9 Land cover types and max, min value of NDVI in each land cover type. But I don't ...
11
votes
2answers
340 views
How sensitive is Landsat to atmospheric correction?
How important is it to correct Landsat for atmosphere, haze and convert DN to reflectance? What impact does it have on the results, say for many of the vegetation indices?
5
votes
2answers
331 views
Disaggregating aggregate GIS data using remote sensing
I haven't really done much with remote sensing imagery. I have census data for an area, and a TIFF raster image of the area.
I'm sure this is possible, is there a simple way to disaggregate the ...
