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Classification in ENVI
By Daniela_06,
Hello,
I am doing an unsupervised classification using ENVI. I have an ETM+ 1992 image already orthorectified and I have mask the study are of interest (administration boundary). Anyway when I perform an unsup classification the background is being classified. How to eliminate the black background of all the imageS?
regarding landuse
By adnan0001,
hi friend's ....
i have done my landuse / land cover map using erdas(supervised classification)
i want to give colour for different classes..
plz see the attach document..i want to fill the colour like this ..plz help in finding the solution
https://www.dropbox.com/s/r2tng0qvkke929m/landusecover.doc
thanks
regarding gis
By adnan0001,
plz any1 clear me..in gis in detail or any material
different types of geographic phenomena...?
classification of analytic gis capabilities...?
visualization process and stategies..?
spatial data and geoinformation..?
How to do a vegetation classification
By Daniela_06,
Hello everyone.
I am doing a classification for 2 different dates 2002 and 2012.
For the year 2002 I have a shapefile with polygons that show the classes (16) in total, using ERDAS and ENVI I was able to turn those polygons into training sites a do a proper classification. For the year 2012 I have no shapefile nor ground thruthing information and I am going to do a visual analysis of the 2002 classification map to create signatures for the 2012.
Now. I need to asses the deforestation of the
Land cover classification and Change detection technique
By Daniela_06,
Hello,
I need to do a land cover classification of satellite images from diff years 86,91,98,02,12 from different providers like ASTER and LANDSAT and I have several questions regarding some issues I am presenting. Hope someone can help me.
1. Do the Landsat images need to be ortho rectified, they are L1T images TM and ETM+ if so, can I use the ASTER DEM of 2011 that I have to ortho rectify all of them? no matter the year? An if the DEM is in a different resolution that the 30m how should I d
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