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etopo5
2010 Aug 02
1
read the middle of a file
Hello,
The other day Justin Peter presented a mini program to plot a topographic map with an overlay of the worldHires. I seemed interesting so I checked the ETOPO5 site and find that there is a new file ETOPO1 with a 1 minute grid. I downloaded it and tried a similar procedure. Now the ETOPO1.gz is 1 Gb and the uncompressed file is 5 Gb. They do not fit into my laptop. I tried the following program that works, but
it takes too long to read the file,
Now the question: is there a faster way to read a piece...