RT
------解决方案--------------------------------------------------------
Syntax
DISP_GET_LOCATION
Arguments
DN
The display number corresponding to an open display.
XFLOC
Upon return, this variable contains the x location of the current pixel, in modified file coordinates.
YFLOC
Upon return, this variable contains the y location of the current pixel, in modified file coordinates.
Keywords
FLOATING (optional)
Set this keyword if you want the XFLOC and YFLOC coordinates to be returned as floating point values. If this keyword is not set, then XFLOC and YFLOC will be long integer values.
NO_OFFSET (optional)
Set this keyword to return the current pixel location in ordinary zero-based file coordinates (without (xy) start values being added).
Example
- Python code
; ; This example prints out the location of ; the current pixel for each display ; pro example_disp_get_location ; ; Get all the display numbers and ; check to make sure at least one ; display is present. ; display = envi_get_display_numbers() if (display[0] eq -1) then return ; ; Print out the location of the ; current pixel for each display ; for i=0, n_elements(display)-1 do begin disp_get_location, display[i], xloc, yloc print, display[i], xloc, yloc endfor end