tylermw

13 ms·

91.
by tylermw 6y ago
Thanks! For your question, check out Open Drone Map, which is an open source toolkit for doing just that: https://www.opendronemap.org I also provide instructions in my (free and open source!) masterclass on how to take LIDAR da
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by tylermw 6y ago
You can also query elevation tiles using the `elevatr` package and use them in a similar way.
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by tylermw 6y ago
Good to know, thanks! I'll add a note mentioning the need for an account.
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by tylermw 6y ago
It looks like they're a firm that does large-scale photogrammetry to build 3D models worldwide--this is just a tutorial on how to combine existing topographic datasets (e.g SRTM or a USGS elevation product) with satellite imagery to ge
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by tylermw 6y ago
Thanks! I always enjoy when a library has a solid README with examples, especially when it's a visualization library. Wanted to make sure I had one myself.
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by tylermw 6y ago
Related: in my masterclass (free and open source, materials here: https://github.com/tylermorganwall/MusaMasterclass ) I also walk through how you can convert LIDAR data into hi-res DEMs to generate 2D and 3D maps
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by tylermw 6y ago
The R GIS ecosystem has seen great strides recently! I've just been working on one part of it: 3D visualization and computational hillshading/raytracing. And that video looks like a great resource--I'll put it on my watch lis
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by tylermw 6y ago
No color support, but you can export the map to an STL file with the function `save_3dprint()`. You can declare the maximum width/depth and it will scale the model to the size you've specified.
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by tylermw 6y ago
Additionally, the `elevatr` package ( https://github.com/jhollist/elevatr ) serves tiles directly from AWS Open Data Terrain Tiles. I don't believe it requires a key.
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by tylermw 6y ago
Mapbox has an API you can query from--I believe they have a free tier. The `ceramic` package makes this easy to pull from, but you need to get a Mapbox key first: https://github.com/hypertidy/ceramic
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by tylermw 6y ago
Author here, I wrote this to show how you can use the rayshader package to generate 3D maps in R using free and open data (in this case, Landsat 8 imagery and SRTM elevation data). You can check out rayshader's Github repo here: Github
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Guide to Making 3D Maps with Satellite Imagery in R(tylermw.com)
232 points by tylermw 6y ago|29 comments
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by tylermw 6y ago
Author here, just wanted to show off an example of using my pathtracing R package, rayrender. Here's a link to the Github page: Github: https://www.github.com/tylermorganwall/rayrender And here's the pkgdown
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Show HN: Pathtracing Neon Landscapes in R(tylermw.com)
5 points by tylermw 6y ago|1 comments
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by tylermw 7y ago
For R packages the license is specified in the DESCRIPTION file. See https://cran.r-project.org/doc/manuals/r-release/R-exts.html...
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by tylermw 7y ago
I created this R package because I kept on seeing awful 3D models of the virus out there (worst offender: a ball with what looked like toilet plungers sticking out of it). When I tried to find a good model, I realized people had just been t
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Show HN: A library for custom scientifically accurate 3D models of SARS CoV2(github.com)
4 points by tylermw 7y ago|3 comments
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by tylermw 7y ago
Replace your child with a full grown adult and you BET I'm ignoring someone trying to chat me up while I'm hustling to work in the morning :) Just saying, don't take other adults not interacting with your child as some overar
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by tylermw 7y ago
And yet, some people are able to live remarkably "weird" lives, influence and change their communities, and not feel like they have to relegate their appearance to "bland tech office drone" because they choose to be pass
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by tylermw 7y ago
Thanks for the shoutout!
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by tylermw 7y ago
> There are a lot of very "experienced" 23 year olds By the definition of the word--no, there aren't. You can have talented, capable, and driven 23 year olds, but not "very experienced." Given a working adults li
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by tylermw 7y ago
The Chemical Safety Board is great at this as well. Great reports and long animations explaining what led to industrial accidents. Explosion and Fire at Williams Olefins Plant, Geismar, Louisiana, video (11 minutes long): https:/&#x2F
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by tylermw 7y ago
I was just doing this yesterday--the "base R" way would be to simply use readLines() and grep through the same way you would in the command line. You're right though, grep + awk are super useful and parsing larger-than-memory
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by tylermw 7y ago
"R is only great if your data is already great." Disagree. R has an incredible ecosystem for parsing, cleaning, and manipulating data. Even ignoring the tidyverse, base R provides more than enough functionality to clean and analyz
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Raytracing Lenticular Prints in R with Rayrender(tylermw.com)
2 points by tylermw 7y ago|0 comments
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by tylermw 7y ago
That was my comment, and the point wasn't that the R code still ran four years later--the point was that R Core's focus on backwards compatibility (in reference to R being hamstrung via its focus on "compatibility with S&quot
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by tylermw 7y ago
There's no such thing as a deterministic experiment. There are so many sources of uncertainty in all fields of experimental physics, and statistics can help quantify and even design better experiments. It's just a shame statistics
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by tylermw 7y ago
> Most physicists I know would invoke "But we use probability in quantum mechanics all the time!" I have absolutely heard that one before :-)
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by tylermw 7y ago
Oh, I know (I have a PhD in physics)--but I'd say the main reason statistics isn't used in most fields of physics isn't because it wouldn't help, but rather because most physicists don't know much about statistics.
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by tylermw 7y ago
R has interfaces for Fortran, C, and C++ as well. Quite good ones, in fact.

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