Agricultural stress - NV5 Geospatial - Help Forums

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Last Post 27 Aug 2013 04:48 PM by anon

Agricultural stress

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anon

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27 Aug 2013 04:48 PM
Good afternoon, I have 4 band (RGBI) and I can only get two vegetation indices (Normalized difference vegetation index and Simple Ratio Index), when I want to calculate crop stres I get a message "Requiered indices for vegetation mapping not present". With 4 band RGBI not possible for calculation "Agricultural stress"? We need to generate more vegetation indices for calculation "Agricultural stress"?, I'm good time trying and I can not. I need to have more bands for calculation "Agricultural stress"? Many vegetation indices are necessary to perform the calculation of "Agricultural stress"? I hope your help, best regards.

Berangere Casson

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Posts:61

28 Aug 2013 09:18 AM
In the following part of ENVI help are listed the indices used in the Agricultural Stress Tool Vegetation > Agricultural Stress Tool If you click on each indices in this help page you should access to the description of each indices that should also list the bands required to compute them.

Deleted User

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28 Aug 2013 09:56 AM
It doesn't look like you have enough bands to use the full agricultural stress vegetation analysis. Multispectal images such as yours have limited input as thus limited output. If you have access to a hyperspectral data file (> 10 bands) you should be able to extract more vegetation indices.

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