Posts Tagged ‘terrain’

Ocean distance from station

Saturday, December 5th, 2009

Only needs a small change to the map-drawing Java to take the NOAA list of stations and calculate their distances to the nearest ocean. There are 30800 of those so it’ll take a while, but I should then have a map of station ID to distance-to-ocean. Yay!

Data collection

Saturday, December 5th, 2009

Yesterday and this morningĀ I’ve collected a huge number of DTED files from here.

The terrain information is made available for free from the USGS, but is generally provided on physical media as it’s so large – multiple DVDs for level 1 DTED. Of course, there’s no such thing as a free lunch, so the files are grouped into 10-degree blocks and then arranged by country, so somewhat awkward to find – or a fun geography quiz, if you prefer!

I’ve also cobbled together a bit of Java to produce a map showing which terrain cells I’ve got. Sadly, this shows I’ve got some more work to do: