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Old 25-04-2017, 22:50   #16
gfh
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Re: geoTIFF in OpenCPN?

I tried a couple different projections. I put them into OpenCPN, took screenshots of both the DEM layer and a chart layer and overlaid them in photo editing software just to see what was lining up best. I think I've got it.

Now to test if my GPS puck is accurate enough to get me down that tiny little ditch...

Thanks again.
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Old 21-05-2017, 19:30   #17
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Re: geoTIFF in OpenCPN?

Update: This totally worked. I was concerned that the georeferencing wouldn't be right (i.e. that my lidar overlay would be in the wrong place) because key geographic features didn't appear to exactly line up with underlying chart, but I finally got to use it this weekend, and it worked flawlessly. My depthfinder was reading 0.2ft at one point, which is probably within its margin of error, but I made it through without touching.

https://sailingfortuitous.com/the-bl...-of-the-fleet/

Thanks again for all your help!
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