TransDEM Forum

If it can wait til next week I can probably make more detailed suggestions how to track down the cause of the problem. I plan to be back home Tuesday or Wednesday.

I have goofed up royally.

Maybe it was because I was the one who wrote the tutorial, maybe not, but I found my error. In the midst of creating and recreating my route, I kept forgetting to add the ROUTE itself to the GE images (little blue line tracing the tracks). Once I had that in place, and generated the route, I could generate all the tiles I needed.

My first clue should have been that the number of tiles away from the route was greyed out. Once I added the Route itself, I could change the numbers of tiles away. You gave me the clue, Roland, when you suggested 7 or 8 baseboards. I just didn't recognize it.

I have happily created two segments of my route with a third and maybe a fourth to go. They show all images I want and, using the figure of 4 boards away, I get a nicely compact route with all the visual distances I need. Since the route is on the southern seacoast of Hokkaido Island, the rise of mountains in the foreground to the north hides the edges of the route nicely. I can say that I am burning through KUIDs pretty fast. I figure that 50 images will generate around 220-230 UTM tiles with the setting of 4 boards away from the main line.

Now I'm going to go back and redo the Montana route that wouldn't work right with GE images.

Bill

G'day hibakker,

...as Roland intimated, Bill, the "no source" error is caused by the lack of compliance with three basic requirements. Not only must you ensure that your Bounding Box covers enough area to include the SW corners of your tiles, that your map/image data is adequate for the area you want to cover, you must also make sure (and this the only aspect of the whole "show" you haven't mentioned), is that the designated SW corner of ANY 3D UTM tile MUST EXIST ON THE EXPORTED ROUTE. This part of the process WILL always fail if the Route Filter Setting (third panel down on the left hand side of the export dialogue box) is "applied" and the filter is set to the default ("3"), as this will only export (irrespective of the bounding box), 3 baseboards on either side of the route polyline. IF ANY OF THE SW CORNERS ARE OUTSIDE OF THIS EXTENT, the "source" for the UTM tile WILL NOT be found! You must either uncheck the "apply" check box in the panel (to allow the export process to export EVERY possible baseboard) or set the filter value to a sufficient number to ENSURE that ALL of the SW corners of all of your UTM tiles are INCLUDED in the route. As I said that's the one aspect of the process you seem to have "missed"...

Jerker {:)}

I got it now, Garry. Just before I created my last two routes, I zoomed down far enough to see the baseboards for the route and made sure that the bounding box covered the SW corner of the route and that I included the baseboard that held that corner - then went one baseboard further. I am comfortable with setting the filter to '4' now, as that is about the extent of imagery away from the tracks anyway. For an especially tricky route (like one oriented SE to NW or SW to NE, I go to '5' boards. I can always trim, but it is difficult to add boards later.

Which setting is it that allows me to zoom high enough to view a greater portion of the route without having it suddenly disappear (go plain blue with only boards marked)?

I also note that the mini-map shows nothing at all. I expected it to show tiles, but then why would it if they are considered baseboards themselves? I know I can use TD to put down tracks, which would show on the mini-map, but I like putting them down manually.

Bill