how to draw velocity with direction in paraView?
 

hi all
in my case velocity is directed through positive or negative x-axis .then I want to draw the velocity with its sign.how can i have a figure of velocity over time at a certain point with its true direction not only its magnitude.is it possible with paraView or the data should extract and plot separately?
thanks a lot.

Have a look at the icon-bar in PV: just to the left of the drop-down with which you selected "U" there is a dropdown that says "Magnitude". The other options in this dropdown are "X", "Y" and "Z" ... guess what that means

thank you very much dear bernard.i'll test it.

it works when showing x-velocity distribution.but when I want to draw the time trace at a given poit it draws U(Magnitude)only not x-velocity magnitude.

Don't use that time-trace. Usually (for line-plots) there are 4 Options: magnitude and the components. Manitude is selected. The other 3 are not.

thanks.i drew that.after select the point and plot over time,U0 should be selected.thanks for the clue.