Real heightmaps without unity


#1

I have found a possibility to get directly heightmaps.

http://terrain.party/

  1. Place the grid about the terrain.

  2. Expand the Grid to 30km (red)

  3. Save the height map (green)

You will get a zip-file with heightmaps and a readme file. With the merged heightmap I got the best results. In the readme file you will find the resolution (here 30m):


<(readme begin)
Height Maps

fjord Height Map (ASTER 30m).png

ASTER is the most recent public survey of elevation on Earth. It has high
    coverage and high (~30m) resolution. However, the instrument can get
    confused by high concentraions of clouds and mountains, creating gaps in
    the data that need to be repaired by hand.
    http://asterweb.jpl.nasa.gov/gdem.asp
(readme end)/>

Furthermore, you will find the min and max height. This three values you will need for the import into LT3D.


<(readme begin)
Elevation Adjustment

The original elevation models for this area contained elevations ranging from
0 through 1843 meters.
(readme end)/>

Open L3DT and with File->Import->Heightfield import it.
4) Choose the file with the merged heigthmap. ==> Press button Next.
5) Set the following value: “Horizontal scale = 30m”.
6) Activate “Specify new vertical range” and “Wrap edges”. Set the following values:
Minimum alt.: 0
Maximum alt.: 1843
==> Press OK Button

It can occur spikes in the terrain. Out this reason create a desing map from the imported heightmap and recalulate it.
7) Right click at the heightfield ==> Operations->Design map->Generate from HF…
8) Set the design map size. For more details I choose 16.
9) Press the buttons Next and OK.
10) Set the design map parameters. I set only the value “Default climate”. ==> Press OK and Yes.
11) Press the calc. button in the toolbar, choose the heightfield and recalculate it with the button OK.

Thats all. :wink:


#2

@JuelsDreki thanks that’s a really useful workflow,
i made this from UK coordinates, heightmap for 30kmx30km


#3

@ritzo
I am pleased that it will help you. Unfortunately, the original data seems does not support higher resolution than 30 m.


#4

Ive been using Nasa’s EOSDIS , has a resolution between 2m-20m depending on region.
https://urs.earthdata.nasa.gov/ But note that it is only for academic / Non-profit use.

It does have a large privacy notice at the bottom of concent, but thats for use of the service ofcourse.


#5

@Menithal
I have an account now, but I do not understand where or how you can download heightmaps there.
Can you explain please, how you get heightmaps from this page?


#6

Ill write up a guide on in the morning.