3D vector field gnuplot

1
votes

I'm trying to plot a vector field and i Would like to have some help:

  1. I would like to have a 3D GRID
  2. i would like to know how can i draw a border of specific dimension
  3. How can i define a palette like a gradient based on a specific component of a vector field, i.e I have a vector field like the one in figure, I'd like the vectors to change color from red to blu depending on the magnitude of the y-component let's say .

I know it's a lot but i really need help my 3D plot

1
vectorplot3dgnuplot

1 Answers

0
votes

1) Not sure what you mean by a 3D grid.

2) The border dimensions are set by xrange, yrange, and zrange. You can remove the extra space below the minimum z using

  set xyplane 0

To change the size on the page, you can change the 3rd and 4th parameters of the set view command:

  set view rotx, rotz, scale1, scale2

It is easiest to adjust these by click-and-drag with the middle mouse button and then either write down the scale values shown in the plot window or issue the show view command.

3) Red to blue palette mapped to y coordinate (column 2 in your plot):

  set palette defined (0 "red", 1 "blue")
  set style data vector
  splot "resampled.odt" using 1:2:3:($4*factor):($5*factor):($6*factor):2 lc palette