Hi everyone, I have a question about the use of the command "VECTOR/flowline". With something as simple as this: shade temperature,lon,lat vector/overlay/flowline u,v,lon,lat I have been trying to draw a 2D wind field over a 2D temperature field, without any success so far apart from loosing hair. The temperature is just plotted with SHADE. The wind field is drawn from the variables u and v and I want it to appear as a flow line instead of the well known arrows. The latter is the tricky part: I can easily get the flow lines, but I can not decrease the number of drawn flowlines. They are so many that the graphic is not legible at all (see attached screen capture which is the best i could get so far). Until now, I have tried: - the "/density=..." qualifier. The bigger the number, the more numberous the flow lines are. The best I could get is with a decimal number (any of them) between 0.1 and 0.9. Negative numbers are not of any help. - the "/xskip=.../yskip=..." qualifiers. Except if the wind field is drawn as arrows instead of flowlines, it doesn't change anything to the graph. I even tried the "pplus/...,xskip,yskip" formula, unsuccessfully. - the "/length=..." qualifier. That doesn't work. - different amusing combinations of all possible qualifiers, without any success. - a different way to give my variables u and v. I indicated u [x=-1000:1000:100,y=-1000:1000:100] (units=km), idem for v, hoping Ferret would be forced to use only a sample of u and v, but that didn't work either. Does anyone have a solution for that? By the way, I couldn't reduce the size of the arrows drawn on the flowline, any hint about this would be very welcomed too! Thanks in advance for any help, Emilie P.S.: I am using Ferret v5.81 on a Linux(g77) 2.4.18, according to the Ferret header.
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