One of the most common sources and formats for terrain data is a Digital Elevation Model (DEM) file, which was developed by the United States Geological Survey (USGS). A single DEM file contains elevation data for a rectangular section of land, stored as height (elevation) information measured at each point on a grid spread out over the rectangle. The grid spacing is typically 90 meters or 30 meters, but some data is available at a 10 meter spacing.
If you start poking around on the internet looking for DEM data files and information on how to 3D print them, you will quickly run into a lot of information and references that come from the Geographic Information Systems (GIS) world. People working in GIS create, manage, analyze and visualize all kinds of data about our physical world including terrain, roads, vegetation, drainage, and land usage. There are many professional software packages used in GIS, some of which are open source or publicly available.
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I tried it out and got similar results to what Terrain2STL produces. One advantage of the plugin is that you can select larger areas to capture, but the user interface is more technical and you have to enter latitude and longitude coordinates instead of using an easy map interface.
Terrain2STL is really well done free, online software, and for anyone wanting to try this out, it is hands down where I would recommend starting. But the goal of this project was something higher resolution, so off we go in search of 10 meter data for Mount Rainier.
It took me about 20 minutes per file to study the file and select and remove the data that was clearly erroneous. All four quads brought in to one scene resulted in over 10 million triangles, which is a lot (more on that coming up), but they came together as a glorious 3D version of Mount Rainier and the surrounding area:
This is what I was after! In this data set, we are looking from the east to the west, with north in the upper right corner, and you can see peaks like Little Tahoma (center, in front of the summit) and clearly make out the crater at the top. Here is a top down view (north at the top), with the quads shaded so you can see the extent of each:
10 million triangles in one object is not particularly huge in this era of fast video cards, but yet it is a lot more than most 3D design software can handle fluidly. And the export function that saves a file in STL format was not going to be able to handle a dataset that big. The real problem, though, is that we need to scale the data down to an object about 6 inches across, and we need to clean up the edges and bottom so that we have a solid object for printing. With a smaller data set, this is easily done.
So now the task was to convert my very high resolution model in to a height map that I could use to create a lower resolution model at any uniform grid spacing I wanted. I created a color map for the model where the lowest areas are black and the highest points are white. Viewed from the side, this is basically a color gradient that goes from bottom to top, black to white.
When viewed from the top, we have a height map, as shown in the upper left of the image below. The lowest areas of terrain are dark and the highest areas are white. To render out the height map I had to fiddle with the scene lighting and the render exposure to make sure that the full range from pure black to pure white was being captured, with no additional lighting coming from side shadows.
It would be great to find an easy (and free) tool that could reduce the 10 million triangles in the DEM file data down to about a million quads for modeling and 3D printing, without creating irregular patches of differing resolution. Professional tools like Simplygon and Polytrans are certainly an option, but can also be expensive. (I have professional experience with Polytrans, and it is an amazing software package created by a team of people who are extreme experts on all kinds of CAD and 3D file formats and how to convert between them.)
Pretty cool that features like the crater and river beds made it through the whole process from DEM file to height map to STL file to 3D print! In the pic below, you can see how the piece is a bit warped end to end like a canoe.
To finish off the painting, I used a satellite view of the area as a guide to paint the various major features like glaciers, rivers, high terrain, forest, snow and rock. Adding paint obscures detail so I was hesitant to get too involved with the painting. I used Tamiya acrylic model paints to do the painting.
What I ended up doing was grabbing an image from Google Maps that was roughly equal to the rectangle my model covered, and then rotating, scaling and warping the image in Photoshop to line up. Not precise, and fairly time consuming, but good enough for the goal of seeing what a color print would look like.
You can see that most of the text is blurred and not readable. If I were doing this again, I would paint out any text or turn it off in Google Maps. The detail in the glaciers and river beds really pops in the color print.
Scale models and dioramas of mountains and landscapes are fascinating because they give such great context about places that we can hike and explore at ground level. A tabletop model of Mount Saint Helens, for example, makes it immediately clear how the eruption unfolded and how the blast traveled over the landscape. (Maybe Mount Saint Helens should be the next project?)
Nice work, but I want to share something .The base of the mountain is actually much larger (4 x) than you included at first. (I live 30 KM NW of the mountain that is named Tahoma. It is a native term meaning, roughly, Mountain that was God). The elevation data, when using height map, is a bit on the low side. I had to move the Z axis up about 150% to match the real life shape and look of the monster. Have a look at any photo from Seattle. See what I mean?
For over 15 years, Western Home Journal, the Mountain Home Architecture, Construction, and Design Resource, has succeeded as a proven medium for speaking to a sophisticated mountain audience. Comprised of multi-channel efforts, the publication has regional print editions, targeted digital campaigns, and a content-rich website. WHJ markets advertisers to local, regional, and national audiences. The print magazines are published bi-annually in Bend, Oregon; Bozeman & Big Sky, Montana; Flathead Valley, Montana; Jackson Hole, Wyoming; Park City, Utah; and Sun Valley, Idaho.
The Creative Studios are located inside the Sewell Mill Library & Cultural Center. We are a multimedia production space free to use with your Cobb County Public Library card. The space includes editing studios, digital art stations, a recording studio, and a green screen video studio.
We have a wide variety of industry-standard equipment for you to use in the facility as well as digital media software. We also teach ongoing introductory workshops to teach you how to use it all. Whether you are a professional creator or a blossoming artist, we have the tools and support you need to make art the way you want to make it.
The Creative Studios currently offers reservations over email, phone or in-person visits. Please note that the quickest way to contact us is by calling the studios main number at 770-509-4988 during regular business hours. Email inquiries or future reservations can be made by clicking the link below.
Welcome to Room C. This is a podcast about the celebration and promotion of local artists in Cobb County and the greater Atlanta area. It is produced at Sewell Mill Library and Cultural Center in our very own Creative Studio. Our goal is to help our local artists get their voice out into the community as well as to highlight some of the amazing programs and resources available from Cobb County Public Library. Stay curious. Stay creative.
Our recording studio is fully soundproofed and fully-equipped with an 8-channel audio interface, compressors, amps, monitors, an electronic drum kit, a MIDI keyboard, and audio editing software like Pro Tools, Audacity, and GarageBand. Bring in your own instruments, or use one of our guitars and basses. We provide cords, dynamic microphones, headphones, and even a spare pick if you forget one at home. Come on in and record your podcast, demos, or your next hit album.
Our three small studio rooms are ideal for editing your media content, recording clean vocals, making beats, or working on solo creative projects. We provide the software, microphones, headphones, and distraction-free space necessary to help you make your best work.
Room C includes a powerful PC equipped with a wide variety of multimedia software, and can be used with our professional microphones to record great audio. This room also features a vinyl record player and a cassette player, which can be used to digitize analog formats, or turn classic audio into samples and beats.
This digital resources list was obtained from the National Archives and Records Administration, Record Group 210. Any errors or omissions that have come to our attention have been amended on our hard copy at the Heart Mountain Interpretive Center.
Please contact us at info@heartmountain.org if you identify any further roster inconsistencies. Adjustments will only be made on the on-site, hard copy, and will not be reflected on the electronic copies available on our website.
Click below to view or download the digital resources sections of the Roster of those incarcerated at the Heart Mountain Relocation Center. Incarcerees are listed alphabetically by last name. The Roster has been imaged only and is NOT full-text searchable.
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Andrew has nearly two decades of executive leadership in the non-profit sector, creating organizational growth, community impact, and financial success. He is a skilled fundraiser and storyteller with expertise in team building, change management, strategic planning, and community engagement. 152ee80cbc
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