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TOPIC: Animated GIF of Shaded Relief Map

Animated GIF of Shaded Relief Map 10 months 3 weeks ago #11631

  • ndoggac
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Thought I'd share this idea. I just recently found the shaded relief options for "Light Direction" and "Vertical Scale". I started messing with the light direction a bit with the vertical scale maxed out, and noticed you can often glean additional information by viewing the shading from different directions, but it needed to be faster than RM's views can give you. I ran from 0 to 330 degrees in increments of 30 degrees, and exported a high resolution PNG for each increment. I then used the program imagemagick to stitch them into an animated GIF. You can open the GIF in a browser (I used Chrome) and the middle click to scroll around, and CNTRL+ and CNTRL- to zoom in/out. I've linked my result below. It definitely makes you a bit dizzy, but it's helped me identify a few places I want to take closer looks at when I start the side-scan data collection.


For whatever reason middle clicking to open this in a new tab does not work for me, it brings up a black imgur screen with a low res version. Left clicking sometimes works, and opening a new tab manually and pasting the links usually works. Not sure why imgur returns different things with the same URL?

It's a very large resolution gif, recommend full screen view. If you see all white with a blue/white border, use the mouse wheel to scroll down. Use the middle click scroll option to move left/right.

imagemagick command used: convert -delay 20 *.png -loop 0 movie.gif
Last Edit: 10 months 3 weeks ago by ndoggac.
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