in reply to Earthquakes in three dimensions

That is really excellent. I wonder though is there a way to include the magnitude data, say by color or symbol differences?

---- Even a blind squirrel finds a nut sometimes.

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Re^2: Earthquakes in three dimensions
by ambrus (Abbot) on Oct 23, 2012 at 18:55 UTC
    Untested advice: try changing
    "splot '-' using 4:3:5\n"
    to
    "splot '-' using 4:3:5:1 with points pointsize variable\n"
    or
    "splot '-' using 4:3:5:(2*$1) with points pointsize variable\n"