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Terrain model of Sundvollen / Kleivstua, Norway

by relet, published

Terrain model of Sundvollen / Kleivstua, Norway by relet Oct 25, 2011
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Summary

I discovered I have access to a 10m resolution elevation model of Norway.
So I decided to see if I can print my next paragliding spot.

The original model is 1000x1000 points at 10m resolution = 10km x 10km. The downsampled version has a 100m resolution. The cliffs are roughly 450m high.

Instructions

STL file is sampled down to 100m resolution, exact heights. Print in multiple colors if you dare. The flat areas are a fjord. The transparent blue PLA should look good for water.

I have appended a scad of the 10m model. You may try to print this if you happen to have more memory than I do. It's just a few times more complex.

There is also a little bit of python code to convert a Digital Elevation Model (DEM/DTM) in ASCII grid format to scad code.

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So, this is gonna sound like a dumb question, but how does one use the python script? I have a DEM, but dont know where to go from there..

The main image looks a bit like a triangular cheese toastie has exploded, expelling cheese everywhere . . . :-D

Yeah, I think the monochrome versions work a lot better. :D

Really cool... Are the norwegian data available for all? I'd like to make one of my place :-)

I've looked into free height data for norway, and the resolution dropped to mostly unusable when you passed the latitude (approx.) of Molde/
Ålesund.

Though this might have changed, as I tried it a few years ago. Hoping relet can hook us up with something better!

Ok, let us know if it opens up... Really cool.

Lets say... I'm working on it. ;)

[No, it's not currently available, unless you are member of Norge Digitalt, iirc.]

this is really cool! i am a huge geography freak, so this is just about the coolest non-mechanical print/idea i've seen!

care to write a guide on how to convert your files, maybe some research into pulling topographical features from google earth or other commonly available sources?

Thank you. I don't know much about good sources, but I believe there are free DTM models available for most of our planet (with medium to lowest resolution depending on where you are).

I used the free GRASS software to select a region in DTM and export to "ASCII grid format". From there on, the python file will do the rest. GRASS can do the same with most other raster formats like for example GeoTIFF.

It takes one parameter on command line (the file name) and writes to stdout. There is one parameter "sample" in the code, which you can set to the sample period (i.e. 1 = every sample, 10 = every 10th, etc.)

Also, if you have your own data source, the python code will help you to transform a two-dimensional he

ight array into a valid 3D object.

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