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Multi bands mean [message #58665]

Fri, 08 February 2008 08:50

jujo
Messages: 8
Registered: May 2007

Junior Member

Hi!
I have a multi-bands image. I need to calculate the mean value of each
pixel, considering all the bands. It can be easily done using:

mean_image=total(multi_bands_image, 3) / number of bands

However, I have some nan values, which have to be discarded before the
calculation. I can do that:

mean_image=total(multi_bands_image, 3, /nan) / number of bands

However, if I do that, the nan values become zeros and the average
includes them. How can I do to calculate the mean without considering
nan values?

Comments welcome!
Best!
Jurandir

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Multi bands mean

By: jujo on Fri, 08 February 2008 08:50

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