plot different trajectories with different time steps

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Barbara
Barbara 2014-8-12
评论： Barbara 2014-8-13
Hello,I would like to plot air parcel trajectories. My output data are: in the first column the steps, in the 2nd and 3rd column the geographic coordinates. To the first airparcel belongs 4 steps (1..4), to the second one 3 (1..3) to the 3rd one 3 (1..3)..ect...(These steps are after eachother in the same column). I would like to plot the air parcel positions with a marker and connect them, but my problem is that to different air parcels belong different steps. How could I plot separately the first, second, 3rd..ect trajectories? Thanks for any help!
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Michael
Michael 2014-8-13
And you would like to plot these trajectories on top of a map projection?
Barbara
Barbara 2014-8-13
Thx, yes basically they look like this as you mentioned and I need to separate them, I will change that the step instead of 0 starts with 1 and later on put them on a map projection.
So I would say, the positions:
lon(1:k1),lat(1:k1)
lon(1+k1:k1+k2),lat(k1+1:k1+k2)
lon(k1+k2+1:k1+k2+k3),lat()
ect
where k is the length of each trajectory, in the case of 1 2 3 is k=3, I have a separate column for k as well, so generally I would write:
for i=1....n lon[(sum(k(1:i))+1):(sum(k(1:(i+1))],lat(same)
and I have to put in the k column to the first place a 0.

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