Suppose that I have 3 landsat images with the same datum ( WGS-84 ) and projection system ( UTM, Zone 39N ) as follows:
TM LANDSAT 5 image for July 1987
ETM+ LANDSAT 7 image for July 2001
OLI_TIRS LANDSAT 8 image for July 2013
I have drawn a ROI in
TM LANDSAT 5 image for July 1987 and saved it in a
.roi file and now I want to use that ROI to
subset data via roi for all of the images. But I encounter the following problem:
I have opened all of the images in ENVI in multiple displays, restored the roi and then used the option
subset data via roi
when I do this for
TM LANDSAT 5 image for July 1987, there's no problem and the action is done completely and I can store subset data to a file but for the remaining two image, I encounter the ENVI error:
There are no available ROIs associated with this input file
What can I do?
Because I'm doing a change detection project, I don't want to draw approximately identical ROI's in multiple images???
And also I think regarding the same coordinate system for all of the images, I should be able to draw a ROI in one image and then use it in other images???
Is that true or maybe I'm thinking in a wrong way???