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Last Post 11 Jun 2004 11:29 AM by  anon
Band math issue
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anon



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11 Jun 2004 11:29 AM
    I have a technical query to do with the band math function. Essentially I have three images, each comprising 4 bands. I would like to overlay these to make one image, with the pixel selection being based on the minimum value in one band. I have been scratching my head but am not sure how to go about this! Thanks, Jon Cox

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    11 Jun 2004 11:29 AM
    I don't fully understand what you are wanting to do? Try using the layer-stack function (under ENVI main toolbar Basic Tools) - if images are different resolution you'll need to resample them to the same resolution, and register them to each other (Map - Registration...) so they overlay correctly. Once that's done band math should be much easier. Does that help at all? Cheers Doug
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