TransDEM Forum

Go ahead!

One small point: The term "hi-res" maybe relative here. We still have only 1 pixel per 5m (with the 5m terrain grid in Trainz). But the new texture set will create a much more natural reproduction of aerial image colours. That was the intention. The original TransDEM ground texture set ...

Derek, do you replace the otho-photo ground textures with your own or leave them as they are to save a lot of work?

Hi Roland:

I will probably use ground textures near the track but keep the ortho-photo textures in the near to far distance.

Unfortunately this route is rather flat land in ...

I have finished the route. It is 180 km long and the final route is 414 X 157 baseboards in size (at 5 m per baseboard). The route has a size of 380 Megs. The amount of detail on the route is amazing as you can see in the previous post. This would probably not have been possible without the 64 bit ...

Hi Everyone:

Using TransDEM 2.5's new CDP for ground textures (TransDEM Ground Textures Orthoimagery 128 V1) I am able to get very acceptable "painting" of hi-rez orthoimagery on Trainz routes. I downloaded images from the Microsoft Virtual Earth Map Tile server set at Level 17.

Here is an image ...

Hi Roland:

I followed up with the Canadian Department NRCAN and they confirmed that both D and E have been used:

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Hello Derek

I asked for help from a colleague who worked on CDED project at the beginning.

Unfortunately CDED data sets were made ...

Hi Roland:

My goodness that was easy. I thought about what you wrote. I opened up one of the "good" files in Windows Notepad and it used "e" for the floating point notation. I opened up one of the "bad" DEMs ( 105D07 east) in Notepad and as you wrote there was a "D" for the floating point notation ...

Do not get confused with the 105D vs. 105E etc. No, it's a problem with floating point number representation in the CDED file. These files have a specific text-like format (you can open them in some text editors). All numbers are encoded as text. Certain floating point values use exponential ...

Hi Jerker:

The DEMs that I am using are provided at 1:50000 scale which is already supposed to be 0.75 Arc seconds. The 3.0 Arc second scale in Canada are the 1:250000 DEMs. I only provided a few 1:50000 DEMs as an example. I successfully stitched several more DEMs south of this location to the US ...

Hi Roland:

I have been working with 1:50000 Canadian DEMs in the Yukon. Several of them work perfectly resolving to 0.75 X 0.75 (Arc seconds) and they stitch together as you can see in this image.

http://imagizer.imageshack.us/v2/xq90/194/pggv.jpg

But when I open and convert to UTM the next row ...

Aren't you using the "Sample Settings" for WMS and map tiles, downloadable from my website or distributed with the TransDEM delivery mail? They already have an entry "SDMI Alaskas Extras".

I can confirm the problem. A slight mistake by the USGS people which we discovered for different maps once ...