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Calculate statics from two diffrent NDVI in ENVI


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#1 am2

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Posted 21 January 2014 - 06:52 AM

Hi,

I have two diffrent NDVI for two years  I want to find statestic informations of them and compare them.How can I export area of diifrent values in NDVI?Or do you know a better way to compare this two NDVI to show changes?



#2 3dbu

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Posted 21 January 2014 - 07:38 AM

is easy just make in erdas, envi or arcgis and comparison between both NDVI and export the change site, if use erdas you can comparison both image and export the changes....regards


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#3 sigologo

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Posted 21 January 2014 - 01:08 PM

Hi am2

mmmmmmmm I need more info, is possible by IDL script for this

 

bye


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#4 am2

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Posted 21 January 2014 - 09:02 PM

is easy just make in erdas, envi or arcgis and comparison between both NDVI and export the change site, if use erdas you can comparison both image and export the changes....regards

Thank you..I can get change map using change detection in Envi.But I need amount of area in m2 that has been changed..I want to extract statics from NDVI..I don't know how to explain :( 

I must classify NDVI again in case of getting area of each class in NDVI?


Hi am2

mmmmmmmm I need more info, is possible by IDL script for this

 

bye

Sorry I didn't work with IDL..Is is possible?Can you give me some more information how to do it?



#5 3dbu

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Posted 29 January 2014 - 04:37 PM

Did You made and solved your question .?




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