I was just woundering if anyone had the Matterhorn terrain, dem or any other format of it which a can use in Terragen 2.
I think it's a awesome mountain: http://ski-zermatt.com/mattnet/pics/batch/8/The%20Matterhorn%20in%20summer.jpg (http://ski-zermatt.com/mattnet/pics/batch/8/The%20Matterhorn%20in%20summer.jpg)
Didn't know where to post this, but since I'm going to use it in Terragen 2..... why not here.
I have a terrain set centred on the Swiss Alps. It's only SRTM3, but it's a start. Haven't set up a download page for them yet, but I'll post them here:
http://www.path.unimelb.edu.au/~bernardk/terragen/terrains/swiss_alps/files/ (http://www.path.unimelb.edu.au/~bernardk/terragen/terrains/swiss_alps/files/)
The number in the filename is the width of the terrain in metres.
[edit] I haven't standardised the altitudes yet, so they may have different sea levels (+/- 0.5 x terrain spacing). I'll post the finished versions later[/edit]
Thank you bigben, but what is SRTM3?
I can't say whether or not these are any better or worse than the data Ben has but this is a fairly good source for some data:
http://www.viewfinderpanoramas.org/dem3.html#alps (http://www.viewfinderpanoramas.org/dem3.html#alps)
Quote from: sjefen on September 11, 2007, 07:18:03 PM
Thank you bigben, but what is SRTM3?
http://srtm.csi.cgiar.org/ (http://srtm.csi.cgiar.org/)
90m per pixel resolution
I'm sorry. I do not understand this fully. Is it bad, or is it good?
It's adequate for large-scale scenes, but that resolution is less than a 10th of what is commonly available in the US.
Quote from: RArcher on September 11, 2007, 07:19:45 PM
I can't say whether or not these are any better or worse than the data Ben has but this is a fairly good source for some data:
http://www.viewfinderpanoramas.org/dem3.html#alps (http://www.viewfinderpanoramas.org/dem3.html#alps)
Looks like 30m :) Thanks for the link.
This is much better than 90m and will give you a reasonable terrain. I'll download it and add it to my terrain set when I can.
http://seamless.usgs.gov/Website/Seamless/viewer.htm
give it a try...
Quote from: RArcher on September 11, 2007, 07:19:45 PM
I can't say whether or not these are any better or worse than the data Ben has but this is a fairly good source for some data:
http://www.viewfinderpanoramas.org/dem3.html#alps (http://www.viewfinderpanoramas.org/dem3.html#alps)
Great link! Thank you very much :)
Quote from: sjefen on September 11, 2007, 06:48:05 PM
I was just woundering if anyone had the Matterhorn terrain, dem or any other format of it which a can use in Terragen 2.
I think it's a awesome mountain: http://ski-zermatt.com/mattnet/pics/batch/8/The%20Matterhorn%20in%20summer.jpg (http://ski-zermatt.com/mattnet/pics/batch/8/The%20Matterhorn%20in%20summer.jpg)
Didn't know where to post this, but since I'm going to use it in Terragen 2..... why not here.
The Matterhorn is one of the most beautiful mountains in the world
Quote from: Will on September 11, 2007, 07:53:47 PM
http://seamless.usgs.gov/Website/Seamless/viewer.htm
give it a try...
They only have 1" SRTM for the US. Global data is only 3"
Access to CGIAR for this data is quicker/more reliable from here (The Google Earth overlay is handy too ;))
Oki.... What do all those those links mean? Like n45e010 for instance.
They are one degree tiles based on the bottom left corner of the tile if I recall correctly. So for your example that tile would cover North 45 to 46 Degrees and East 10 to 11 Degrees. You will need to find the lat and long of the matterhorn and then find the correct tile that covers it.
Alright. Thank you RArcher.
I did a quick terrain.... but I may have missed.... ;) not that familiar with the alps.
http://www.path.unimelb.edu.au/~bernardk/terragen/terrains/swiss_alps/files/matterhorn_81940.7z (http://www.path.unimelb.edu.au/~bernardk/terragen/terrains/swiss_alps/files/matterhorn_81940.7z) (22Mb) 4097 terrain JPEG below.
When I get a bit more time I'll post the a full set of reference info for my terrain set.
[edit] Just confirming I got the right area ... only a couple of kms off. Thanks again for the data link, this is definitely better than SRTM3. Posting a TGD here to get you close enough to the right spot. [/edit]
It sure looks like the right one ;D
You realise of course that we're now expecting to see some results in the next few days ;)
He heh..... I will do my best and post it when it starts to look like something ;)
Thanks for your help guys. Really appreciate it.
Quote from: bigben on September 11, 2007, 08:10:30 PM
Quote from: Will on September 11, 2007, 07:53:47 PM
http://seamless.usgs.gov/Website/Seamless/viewer.htm
give it a try...
They only have 1" SRTM for the US. Global data is only 3"
Access to CGIAR for this data is quicker/more reliable from here (The Google Earth overlay is handy too ;))
That may be so for SRTM, but the NED data is superior and goes down to 10m/pixel for the entirety of the US and 3m/pixel for select areas. Unfortunately it's only 90m/pixel (3" SRTM) for the rest of the world, as you said.
- Oshyan
Quote from: Oshyan on September 12, 2007, 01:26:35 PM
That may be so for SRTM, but the NED data is superior and goes down to 10m/pixel for the entirety of the US and 3m/pixel for select areas. Unfortunately it's only 90m/pixel (3" SRTM) for the rest of the world, as you said.
- Oshyan
Definitely true. I get nearly all of my data for the US terrains from the USGS site. Years ago I used to use GeoCommunity but they now charge for 10m NEDs and you can download large slabs of data from the USGS...
Another productive train ride to work ;)
I've just about finished the terrain set for the alps after hitting another limitation to my conversion process. If you want to render views from near the top you may want to get the extra terrains when they're up. The main set of TERs is centred on a "tall peak" near the centre of the alps with terrains widths of 82, 160, 410, 820 and 2,050kms. I've also produced a set for the Matterhorn with terrain widths of 82, 160 and 410km.
This should provide you with lots of possibilities for camera angles and provide correct line of sight all the way to the horizon. I'm zipping the files and uploading them now. The Matterhorn set is already up. Additional files will be added next week (slope map... makes picking out the nearby lakes a lot easier, and landsat reference images)
[edit] The full set is up now. The widest terrain is only 2049 x 2049 as 3DEM didn't like the corner coordinates, but by the time you get the camera high enough to need it you probably won't notice anyway. It's also the only incomplete terrain. I'll remake this over the weekend as I have to reload all of the data from scratch (only enough RAM for just SRTM data over this wide an area).
The offset for the Matterhorn terrains is X: -232250, Z: -100080[/edit]
Thank you very much bigben ;D
Actually, you may only want to download what you need.... I haven't checked that the sea levels match yet!
Finished the terrains for my alps set. The highest res Matterhorn terrain hasn't changed but the others may have. I had to remove 3 of the higher res data tiles as they caused an inconsistency in the sea level which created problems for the wider terrains. Elevations have been approximattely normalised (all sea levels are now at 0m). Adjusting the maximum altitudes was relatively difficult as the highest peak varied between terrains making a direct comparison difficult. One terrain also has a data glitch from the conversion process which I have seen before in my Grampians project (the bottom left pixel is at 9,000+ metres) but this will disappear when the terrains are masked.
The widest terrain now covers pretty much most of Europe. It's only a 2049x2049 TER, but I don't think it really matters with the intended camera altitude for it's use. I may try and make it a little wider yet to include all of the UK, Spain/Portugal and Sicily/Greece although I'm pushing the limits of my RAM with raw SRTM data (37 tiles loaded for this terrain). I'll have to run some tests later to determine which resolutions are actually required to minimise RAM usage as much as possible
Landsat images for these terrains are coming, but it will be a while as there are a lot of tiles to download and it's a slow process.
This is now my widest terrain set as can be seen from these two views of the Matterhorn. The orbital view has Greece in the lower left and the Pyrenees in the upper right. The close up view shows the value of having the extra padding to show extra mountains along the horizon.
The list of files now includes a slope map for the Matterhorn. I use this to help selecting lakes. I also posted a bonus lake mask which has a quick selection of lakes derived from this image. It's the same size but a lot easier on the downloading (6000x6000 TIFF, only 191kb)... and also the TGD used for the images below. Landsat reference images are on the way but they're a slow download so it's going to take some time.
[edit] 2 landsat images covering the Matterhorn are now posted. They are both the same resolution, so if you take the larger one you won't need the small one. [/edit]
For a high, pointy peak and it can pretty tricky finding it if you're not familiar with the area ;)... rendering the right one now :-[
Very cool bigben ;)
Thanks. One last image for this post... I improved the lake mask using the landsat image to find some more lakes. Using masks like this is really handy especially in situations like this where there is a big drop right next to the lake. As the mask is derived from the terrain, it won't go over the edge.
I've posted the full res lake mask for the 163km terrain. If you want to use it with the 82km terrain just decrease the canvas size by 50% and it will match prefectly.
You're on your own with rivers though ;)
You can pick and choose files from an index page now
http://www.path.unimelb.edu.au/~bernardk/terragen/terrains/swiss_alps/ (http://www.path.unimelb.edu.au/~bernardk/terragen/terrains/swiss_alps/)
Sorry for bumping such an old thread, but does anyone have these files to hand? I can't download them off the BigBens website, as it tells me the file is corrupt.
Sorted via PMs. Not sure what the problem was but if anyone has any problems just drop me a line