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Re: reading envi file in IDL [message #55525 is a reply to message #55524]

Thu, 23 August 2007 10:49

Jean H.
Messages: 472
Registered: July 2006

Senior Member

Robin,

if you just have this one file, you can do:

data = read_binary('c:\test\yourFile',data_Start = 0,data_Type=4,
data_Dims=[400,400,5])

From the top of my head, I can't remember where/how to specify the band
interleave.... though in your case you have the default option, so it
would work!

If you have other files, I can send you/here a function that, with the
help of ENVI, opens the file and return the header info in a structure...

Jean

> Dear All,
> I created a file using ENVI and its header file is below. Does
> somebody could show me how to read that file in IDL?
> In advance thank you very much
> Robinson Juarez
>
> =======================================
> ENVI
> description = {
> File Resize Result, x resize factor: 1.000000, y resize factor:
> 1.000000.
> [Wed Aug 22 10:02:17 2007]}
> samples = 400
> lines = 400
> bands = 5
> header offset = 0
> file compression = 1
> file type = ENVI Standard
> data type = 4
> interleave = bsq
> sensor type = Unknown
> byte order = 0
> x start = 1323
> y start = 714
> map info = {UTM, 1.000, 1.000, 694231.500, 9759973.000, 2.8500000000e
> +001, 2.8500000000e+001, 20, South, WGS-84, units=Meters}
> wavelength units = Unknown
> band names = {
> Resize (Unmix (amazonas_p231r062_etm_071001_a5) EM:GV (X:4278 Y:
> 1152):MAO20071001_test1.em),
> Resize (Unmix (amazonas_p231r062_etm_071001_a5) EM:NPV (X:6152 Y:
> 928):MAO20071001_test1.em),
> Resize (Unmix (amazonas_p231r062_etm_071001_a5) EM:SOIL (X:5959 Y:
> 4199):MAO20071001_test1.em),
> Resize (Unmix (amazonas_p231r062_etm_071001_a5) EM:SHADE (X:2359 Y:
> 2415):MAO20071001_test1.em),
> Resize (RMS Error:MAO20071001_test1.em)}
> ============================================================ ======
>

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[Message index]

		Re: reading envi file in IDL By: Jeff N. on Thu, 23 August 2007 13:26
		Re: reading envi file in IDL By: robinson.inj on Thu, 23 August 2007 13:16
		Re: reading envi file in IDL By: robinson.inj on Thu, 23 August 2007 13:09
		Re: reading envi file in IDL By: Michael Galloy on Thu, 23 August 2007 12:46
		Re: reading envi file in IDL By: Jeff N. on Thu, 23 August 2007 12:29
		Re: reading envi file in IDL By: robinson.inj on Thu, 23 August 2007 11:14
		Re: reading envi file in IDL By: robinson.inj on Thu, 23 August 2007 10:55
		Re: reading envi file in IDL By: Jean H. on Thu, 23 August 2007 10:49
		Re: reading envi file in IDL By: Jeff N. on Thu, 23 August 2007 10:48

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