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Last Post 13 Nov 2014 05:38 PM by  anon
ROI error
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anon



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13 Nov 2014 05:38 PM
    Hello, I am an undergraduate at BYU-I. There is no one on campus that has any knowledge on ENVI. Here is my problem. I am trying to create ROIs to do spectral analysis. I created a vector layer. After using the Vector to ROI tool I get an error message while trying to look at the statistics option. The error message reads "Arrays must be greater then 0" Please help. Thanks, Mike

    MariM



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    17 Nov 2014 11:39 AM
    The error sounds ENVI was unable to find any data within your ROI. Can you tell me more about the steps you followed? What version of ENVI are you using? What sort of data? For ENVI 5.2, I was able to do the following: - open an image - draw a new vector layer on the image and save the vector - use the Vector to ROI tool to convert the vector to a single ROI. The ROI shows up on the image. - right-click on the ROI in the View and select "Statistics for All ROIs", which produced a statistics window with the ROI statistics. Do you see anything that may be different from the above?
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