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Re: envi_get_data [message #58355 is a reply to message #58173]

Fri, 25 January 2008 13:49

Jean H.
Messages: 472
Registered: July 2006

Senior Member

yychongzi@gmail.com wrote:
> Thank you Lorenzo and Pete.
>
> Pete, you are right on the datatype. My input file is integer, it has
> to be changed. Now the program runs just fine :)
>
> By the way, I have another question:
> I used ENVI to do layer stacking, sometimes I got a big .ige file and
> a small .img file, sometimes, more often, I got a big .img file with a
> small .rrd file. I dont know why and the difference.
>
> Thank you guys again.

From Envi Help file:

ERDAS IMAGINE 8.x image files larger than 2 GB use a raster spill file
to store the data from large data sets. That is, images larger than 2 GB
are defined by two files: header information is stored in the .img file,
and the image data is stored in a second file with the same root name
using an .ige extension.

Now, the .rrd is an overview of your data..
Jean

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[Message index]

		envi_get_data By: yychongzi on Mon, 21 January 2008 11:42
		Re: envi_get_data By: lbusett@yahoo.it on Fri, 25 January 2008 06:03
		Re: envi_get_data By: peter.eddy@shaw.ca on Fri, 25 January 2008 09:18
		Re: envi_get_data By: Jean H. on Fri, 25 January 2008 13:49
		Re: envi_get_data By: yychongzi on Fri, 25 January 2008 13:25
		Re: envi_get_data By: woods1 on Tue, 15 September 2009 00:12
		Re: envi_get_data By: Robert Moss, PhD on Mon, 14 September 2009 11:59
		Re: envi_get_data By: Andrew Rodger on Fri, 02 October 2009 06:29
		Re: envi_get_data By: woods1 on Thu, 01 October 2009 09:48
		Re: envi_get_data By: David Fanning on Wed, 30 September 2009 07:34
		Re: envi_get_data By: woods1 on Wed, 30 September 2009 07:14
		Re: envi_get_data By: wita on Wed, 30 September 2009 02:39
		Re: envi_get_data By: woods1 on Wed, 30 September 2009 01:25
		Re: envi_get_data By: woods1 on Wed, 30 September 2009 01:09
		Re: envi_get_data By: woods1 on Wed, 30 September 2009 01:02
		Re: envi_get_data By: Chris Jengo on Tue, 29 September 2009 07:40
		Re: envi_get_data By: David Fanning on Tue, 29 September 2009 06:18
		Re: envi_get_data By: lefsky@gmail.com on Mon, 12 November 2012 14:02
		Re: envi_get_data By: lefsky@gmail.com on Sun, 11 November 2012 20:22

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