Hi,
I am trying to make a plot of wind vs time. I want time on the X axis,
the Y axis to be the speed and a fixed size vector at each data point
indicating the wind direction.
The ideal thing would be if I could specify the deltax and deltay size
of each vector in pixels, or some other screen coordinate independent of
the x and y ranges. Is this possible?
I haven't been able to find any information about the above so I assume
I will need to specify deltax as a time and figure out the right
scaling. However I haven't been able to get this to work, the vectors
always have zero length in the X dimension. I have:
...
set xdata time
set timefmt "%m/%d-%H:%M"
...
plot 'foo.txt' using 1:2:3:4 with vectors
Where the data file is like this:
05/17-11:00 6.33660511836 -00/00-00:55 -0.35963594262
05/17-14:00 4.52832308033 00/00-00:40 -0.731311736396
05/17-17:00 3.95676205159 00/00-00:59 0.0217798990928
I have tried various formats for the 3rd column but I have been unable
to figure out how to make the vector plot work with time on the X axis.
I would greatly appreciate any suggestions,
Thanks,
Dave
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