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Re: envi_get_data [message #68164 is a reply to message #58173]

Wed, 30 September 2009 07:34

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

woods1 writes:

> I don't no how many bytes are in the image. The dimension of image is
> 36800x57600

Multiplying those two numbers together might give you
a ballpark figure. My guess is you would then have to
multiply that result by 2 or 4 to come up with the
actual number. But something in the range of 2-8 Gigabytes
would be my best guess.

That seems a little, uh, largish to put into a single
IDL variable. I'm guessing you don't have one of those nifty
machines with a 64-bit operating system and 100 GBytes of
RAM, probably. :-(

And where do you intend to display it? Have you rented
out the giant screen on Times Square? Have you given
any thought to the resolution of your display? What do
you suppose you would actually see if you *could* display
this image?

I know you are complaining about all the *processing*
that has to occur. But maybe it would be a good idea
to start with more *thinking* about the problem.

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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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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