I am having a problem with the georectify tool that is probably
obvious to someone who is more familiar with the tool.
I have a jpg that I want to georectify into another mapset. I
imported that jpg into an xy mapset and then followed the steps in the
georectify tool help (I am using 6.3 on a Mac). The problem that I am
running into is that only the middle half or so of the jpg is being
rectified. In other words while I am putting in the control points
and such, both maps cover a certain size, and both look correct. But
once I am done georectifying the new raster is in the correct location
and size, but only the middle part of it shows up. It is as though I
had just cut out part of the image and then correctly sized and placed
it.
Any idea what might be going on, or what I can do about it?
One other clue is that the resolution of the destination mapset is 0.5
meters, while the source image (the jpg that I am trying to
georectify) is 1.0 m. But since it is not ending up scaled funny I am
not sure that this is the problem, or what I would do about it if it is.
When I open GRASS with each of the mapsets and view the default maps,
I don't end up seeing just that middle area, so I don't think that it
has to do with the default regions and such, but that seems most
likely. Do I have to set some region or something to get it all to
work?
Thanks for any suggestions.
--Adam
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