Author Topic: Terragen 0.9  (Read 482 times)

Offline Lalla

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Terragen 0.9
« on: April 17, 2019, 11:41:55 AM »
Due to trouble pc I must use only terrangen 0.9 or terragen 2.

I've lost all my old materials and links to download dem.

Can someone help me?

Where I can found dem files for 0.9 and 2 version?

Thanks for help.

Lalla
Lalla

Offline D.A. Bentley

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Re: Terragen 0.9
« Reply #1 on: April 17, 2019, 02:06:18 PM »
The easiest way to get DEM is here (but the size is limited):
https://terrain.party/

If you need larger DEM chunks try here:
https://viewer.nationalmap.gov/basic/

It's also helpful to use uGet for downloading mass amounts of DEM data:
https://viewer.nationalmap.gov/uget-instructions/

Earth Explorer:  https://earthexplorer.usgs.gov/

Global Data Explorer:  https://gdex.cr.usgs.gov/gdex/

Also (Need to Register an account):  https://glovis.usgs.gov/

You can find a bunch of stuff here too: http://www.webgis.com/
For example this is the Los Angeles area:   http://www.webgis.com/terr_pages/CA/dem1/losangeles.html

NOAA:  https://maps.ngdc.noaa.gov/viewers/wcs-client/

There are a lot more, but that should get you started.

-Derek

Offline Lalla

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Re: Terragen 0.9
« Reply #2 on: April 17, 2019, 05:58:42 PM »
The easiest way to get DEM is here (but the size is limited):
https://terrain.party/

If you need larger DEM chunks try here:
https://viewer.nationalmap.gov/basic/

It's also helpful to use uGet for downloading mass amounts of DEM data:
https://viewer.nationalmap.gov/uget-instructions/

Earth Explorer:  https://earthexplorer.usgs.gov/

Global Data Explorer:  https://gdex.cr.usgs.gov/gdex/

Also (Need to Register an account):  https://glovis.usgs.gov/

You can find a bunch of stuff here too: http://www.webgis.com/
For example this is the Los Angeles area:   http://www.webgis.com/terr_pages/CA/dem1/losangeles.html

NOAA:  https://maps.ngdc.noaa.gov/viewers/wcs-client/

There are a lot more, but that should get you started.

-Derek

Thanks for help, I've yet used terragen, I've rendered grand canyon, but I've lost all data due to hard external hd crash.
Another question, (maybe the last? :) ) what format type I must download to load on terragen?
Lalla

Offline D.A. Bentley

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Re: Terragen 0.9
« Reply #3 on: April 17, 2019, 08:06:02 PM »
Terragen 2 I would guess will load more DEM types compared to 0.9, but I'm not sure actually because I'm in Terragen 4 and it seems to load almost anything.

For your purpose I would recommend trying to grab GeoTiff DEM if you can find it. since it's a bitmap type format but it has Geo-referencing info as well.

If you use https://terrain.party/ it will download a Zip file with several bitmap type DEMs' like PNG.  You can easily load those into a program like Photoshop to look at them.

Here is a good tutorial as well:
https://archer-designs.com/tutorials/usgs-elevaton-data-with-terragen-2/

From https://viewer.nationalmap.gov/basic/ I would try IMG or GridFloat format.

Look for the Zip file here for an example DEM in IMG format:
https://www.sciencebase.gov/catalog/item/581d219ae4b08da350d535ec

Hope that helps!

-Derek

Offline Lalla

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Re: Terragen 0.9
« Reply #4 on: April 17, 2019, 10:04:57 PM »
Terragen 2 I would guess will load more DEM types compared to 0.9, but I'm not sure actually because I'm in Terragen 4 and it seems to load almost anything.

For your purpose I would recommend trying to grab GeoTiff DEM if you can find it. since it's a bitmap type format but it has Geo-referencing info as well.

If you use https://terrain.party/ it will download a Zip file with several bitmap type DEMs' like PNG.  You can easily load those into a program like Photoshop to look at them.

Here is a good tutorial as well:
https://archer-designs.com/tutorials/usgs-elevaton-data-with-terragen-2/

From https://viewer.nationalmap.gov/basic/ I would try IMG or GridFloat format.

Look for the Zip file here for an example DEM in IMG format:
https://www.sciencebase.gov/catalog/item/581d219ae4b08da350d535ec

Hope that helps!

-Derek
img  don't work in terragen 2, only 4. :(
Lalla

Offline D.A. Bentley

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Re: Terragen 0.9
« Reply #5 on: April 17, 2019, 10:50:19 PM »

Offline Lalla

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Re: Terragen 0.9
« Reply #6 on: April 18, 2019, 05:59:05 PM »
Try here for GeoTiff:
http://opentopo.sdsc.edu/lidar?format=sd

I've noticed that on earth explorer is possible save a jpg image of the needed part of earth. I need to convert it on tga, type 2 targa 24 format. Exists a converter that do this? I can use only terragen 0.9 not other versions.
Lalla

Offline D.A. Bentley

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Re: Terragen 0.9
« Reply #7 on: April 18, 2019, 07:10:45 PM »
You can convert image types with many different programs.  Here are two free ones:
https://www.gimp.org/
https://www.irfanview.com/

Offline Lalla

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Re: Terragen 0.9
« Reply #8 on: April 19, 2019, 12:30:30 PM »
You can convert image types with many different programs.  Here are two free ones:
https://www.gimp.org/
https://www.irfanview.com/

I've solved using a software that I always use, thank you :) .
Lalla

Offline Lalla

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Re: Terragen 0.9
« Reply #9 on: April 20, 2019, 12:02:49 PM »
You can convert image types with many different programs.  Here are two free ones:
https://www.gimp.org/
https://www.irfanview.com/

I've solved using a software that I always use, thank you :) .


 :( I've not solved nothing, All file formats don't work. I've download tif image but it seems black, I've tried to load on terragen but terrain is flat. How can I solve this trouble now?  :(
Lalla

Offline bobbystahr

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Re: Terragen 0.9
« Reply #10 on: April 20, 2019, 02:39:44 PM »
I suspect you are using the wrong image loader in TG. DEM files can't be loaded like that. I've not played with  DEM maps myself but there's a specified loader for them. Maybe some one with DEM experience will chime in here.
something borrowed,
something Blue.
Ring out the Old.
Bring in the New
Bobby Stahr, Paracosmologist

Offline Lalla

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Re: Terragen 0.9
« Reply #11 on: April 20, 2019, 07:13:41 PM »
I suspect you are using the wrong image loader in TG. DEM files can't be loaded like that. I've not played with  DEM maps myself but there's a specified loader for them. Maybe some one with DEM experience will chime in here.

No, sorry, IMAGE that I've downloaded from EARTH ECPLORER is black, not that that I loaded on terragen.
Lalla

Offline Oshyan

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Re: Terragen 0.9
« Reply #12 on: April 20, 2019, 09:10:43 PM »
You can't generally view DEM data in any standard image viewer, even if it's a seemingly standard format like TIFF.

It is unclear what your issue in Terragen is. If your DEM file gets properly loaded with "Heightfield (Load DEM)" then the name of the *shader* should change to the name of the file that is loaded. Thus I suspect you are not loading it correctly or it is failing for some other reason. The DEM is not loaded, that is why it is flat.

- Oshyan

Offline Lalla

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Re: Terragen 0.9
« Reply #13 on: April 20, 2019, 10:53:40 PM »
You can't generally view DEM data in any standard image viewer, even if it's a seemingly standard format like TIFF.

It is unclear what your issue in Terragen is. If your DEM file gets properly loaded with "Heightfield (Load DEM)" then the name of the *shader* should change to the name of the file that is loaded. Thus I suspect you are not loading it correctly or it is failing for some other reason. The DEM is not loaded, that is why it is flat.

- Oshyan

Tiff is black
Lalla

Offline Oshyan

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Re: Terragen 0.9
« Reply #14 on: April 21, 2019, 05:55:48 PM »
As I said, just because the TIFF *looks* black does not mean there is no data in it. Regular image viewers are often not capable of correctly displaying DEM data, especially when such data is 16 or 32 bits per channel (which it will be if you download it from the USGS).

If you provide specific information about the data you are downloading (area/location or file name), or share the actual files (e.g. with WeTransfer), then we may be able to help further.

- Oshyan

 

anything