4 replies to this topic

[woneil]

The U.S. NGDC has now released the "preliminary" version of ETOPO1. See
http://www.ngdc.noaa...bal/global.html

Now if I can only figure out how to make use of it in Manifold!

[Hans van der Maarel]

The U.S. NGDC has now released the "preliminary" version of ETOPO1. See
http://www.ngdc.noaa...bal/global.html

Now if I can only figure out how to make use of it in Manifold!

Haven't tried this myself, but one of the formats it's available in is NetCDF, which can be opened directly in Manifold, as a surface.

[mdsumner]

Probably the raw binary version will be the best, netCDF has some pretty annoying features and I'm never confident that the data are the best from those files. I'll give the raw binary surface reader a go and let you know.

[mdsumner]

Ok, it's not raw binary but ESRI float (or EHdr) and it imports fine, I'd use the cell / pixel registerd version.

[woneil]

Here's a section showing Eastern Indonesia, picked for its very complex topography, which I feel it displays quite nicely.
 ETOPO1_E_Indonesia.jpg   297.98K   78 downloads
It's not going to be good for zooming in much further, but for this scale it seems like a good dataset. I haven't seen any obviouis artifacts so far.