comp.lang.idl-pvwave archive: archive

Home » Public Forums » archive » Backing store

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: backing store [message #44639 is a reply to message #9913]

Wed, 29 June 2005 08:50

Rick Towler
Messages: 821
Registered: August 1998

Senior Member

KK T wrote:

> Will I lose the details of the bitmap using CONGRID or REBIN if I zoom
> my view to an area smaller than the orginial image?
>
> ENVI provides image, scroll and zoom window. However, those windows
> take up too much space on the desktop and I will like to combine all
> features in one window. That is, when I zoom in to the maximun, I can
> see the finest details of the bitmap, when I zoom out to the maximun, i
> can see the overall view of the bitmap. At the same time, i should be
> able to view the whole area of the bitmap at that zoom level with
> scroll bar activated.
>
> Am I too ambitious?

I'm not an image guy, nor do I act like one on the internet, but I would
use a combination of REBIN and WIDGET_DRAW with the /APP_SCROLL keyword
set. You'll keep the original image in memory and REBIN that image for
display, altering the dimensions according to your zoom level.

I have no idea if this is feasible performance wise, but it is where *I*
would start. Maybe someone else can come up with a better approach.

-Rick

Report message to a moderator

[Message index]

		Backing store By: thompson on Thu, 11 September 1997 00:00
		Re: backing store By: davidf on Wed, 04 March 1998 00:00
		Re: backing store By: Rick Towler on Tue, 28 June 2005 08:27
		Re: backing store By: KK T on Wed, 29 June 2005 01:45
		Re: backing store By: K. Bowman on Tue, 28 June 2005 07:15
		Re: backing store By: Rick Towler on Wed, 29 June 2005 08:50

Previous Topic:	dialog_pickfile: changing default view in windows
Next Topic:	A question about Gaussian distributions in IDL

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Wed Dec 03 00:43:32 PST 2025

Total time taken to generate the page: 1.28489 seconds