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trying to pass parameter [message #88882]

Tue, 01 July 2014 03:39

SUNIL CHOUDHURY
Messages: 11
Registered: June 2014

Junior Member

HI
i am a student doing some work on envi+idl.
I want to pass parameter in math_doit routine
code:
a sample code

File = Filepath('qb_boulder_msi', Root_Dir = e.Root_Dir, $
Subdir = ['data'])
Raster = e.OpenRaster(File)

OutFile = e.GetTemporaryFilename()

fid = ENVIRasterToFID(Raster)

ENVI_File_Query, fid, DIMS=dims
ENVI_Doit, 'Math_Doit', $

FID = [fid, fid], $

DIMS = dims, $

POS = [0,1], $

EXP = 'b1 + b2'+sin(x), $

0UT_NAME = OutFile

b1 and b2 are band values which is being selected
i want to pass parameter x in the expression using widget

so kindly help me..

thank you !
sunil choudhury

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