Training Log Archive: cedarcreek

An interesting, exasperating problem tonight in OCAD 11. I spent about an hour in QGIS taking aerials that David Waller downloaded from Pictometry, warping them to the right projection, and then clipping them to remove the large black "wedges". I created prj files (projection), world files (wld which I renamed to jgw), and the aerials themselves in TIFF format. I used Paint to open each TIFF and save it as jpg. I haven't figured out a better way to do that so I can save space on Google Drive or Dropbox. The warped TIFF files were 1.2GB, and the jpgs were 161MB---a lot easier to send. I know it's lame, but that's how I do it. I'm assuming there is some GDAL fu I need, but I can't figure it out---I use the dialog boxes in QGIS as a front end for GDAL, so I don't have to do command line, which is probably most of my problem. Anyway.

It was loading fine in QGIS, well---almost fine, a few had jpg glitches. Looking at the jpgs in an image viewer, everything looked okay.

But. I couldn't get more than one image to load as a background map in OCAD 11. I got an error message something like "Error backgroundmapoptions.loadbackgroundmap" (not really quotes). I checked the prj files. I checked the jgw files. I tried loading the TIFFs. Same problem. I googled, and found another guy with the same problem on a New Zealand Maptalk website.

I was ready to go to bed and sleep on it, when I decided to try one last thing. I freed up a ton of RAM by closing QGIS and some other lidar software. Boom. Images loaded right away.

Event: OCIN TROL #4 - Forest Run
 

OCIN_Forest_Run_Dec_2015_4 Brown - Splits