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Looping Function (loop)

Description:This procedure provides an image looping capability for any combination of loaded bands or display windows.  A region subset capability is also provided.

Selecting displayed images instead of bands allows the capability of adding graphics (such as coastline) to the images as well as rescaling the images.  Bands selected from memory will be scaled according to default scaling conventions.  (See Rescale for a discussion of scaling defaults)

[Interactive mode][Command mode]

Command Mode:

Usage:  loop, bands=bands, ix=ix, wsize=wsize, xrange=xrange, yrange=yrange, rate=rate, help=help

Arguments/Keywords:

bands	Array of loaded band numbers or display windows (1 relative) to loop.  Display windows are specified using positive numbers, bands are specified using negative numbers.
ix	The index (1 relative) into the bands array listed above, specifying the item to use for the default wsize, xrange and yrange values, to avoid having to assign these values.
wsize	The window size for the looping display window [xsize, ysize].
xrange	The pixel subrange of the input images.
yrange	The line subrange of the input images.
rate	The initial looping rate (in seconds).
help	Print the usage for this command.

Examples:

1. Loop through loaded bands 1 & 2 and display windows 1 & 2.

Interactive Mode:
 

Description: This widget is activated by selecting Functions->Looping in the Main Menu.

Action items:

Update	Update the Selection list with all the possible bands in memory and display window.
Up	Move to the previous item in the Selected for looping list.
Down	Move to the next item in the Selected for looping list.
Delete	Delete the highlighted item from the Selected for looping list.
Go	Bring up the Animation Widget and loop through the selected items.
Help	To display the online help for this widget.
Quit	Destroy the Looping Widget.

Input Items:

Selection list	Click on an entry in the Selection list in order to add it to the Selected for looping list.
Selected for looping	Click on an entry in the Selected for looping list in order to select it for deletion.
Window size for looping	The window size of the window to be used for looping.
Image X-range for looping	The pixel subset range of the region for each item selected for looping.
Image Y-range for looping	The line subset range of the region for each item selected for looping.