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I have a problem with ENVI's Band Math Tool and functions written by me. [message #38083]

Thu, 19 February 2004 07:18

wl2776
Messages: 13
Registered: February 2004

Junior Member

I have a function:

function xlorofil, b1, b2
if (b2 ne 0) then begin
return, 0.88*(b1/float(b2))^(-2.26)
endif else begin
return, -2
endelse
end

It is situated in the file in save_add directory.
On startup idlde writes that this module was compiled successfully.

When I try to use it in Band Math

xlorofil(b1,b2)

I get a message saying that I have entered an invalid expression.

However command

print, xlorofil(1,2)

executed from the command line of idlde, works fine.

And the expression

xlorofil(b1,2)

is accepted by the Band Math tool.

Where is the problem?
Why cannot I execute my funcion on two image bands?

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[Message index]

		I have a problem with ENVI's Band Math Tool and functions written by me. By: wl2776 on Thu, 19 February 2004 07:18
		Re: I have a problem with ENVI's Band Math Tool and functions written by me. By: tianyf_cn on Sun, 22 February 2004 17:16

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