From 0 to 50, it should draw a spiral with 50 lines, or I'm I wrong? And how can i chose Step size in CreateMesh?
You get what you demand! What do you mean with "50 lines"??? You set the number of steps (not the step size) to 50. So your curve is drawn by connecting 40 line segments. Your time is going from 0 second to 50 seconds and because you use a speed of 2*pi/second this means you would get 50 turns/rounds of your spiral. 50 turns with just 40 points??? Thats exactly what you get in your plot and i understand that you are not very happy with that. I guess you would need about 24 points (every 15 degree) per pound (better more) to get an approximately smooth curve. That would mean that you have to set t.step to 1200 which will make the plot fail because of a limit of total number of points allowed in a 3D plot. Add a last argument 2 to Createmesh as we dont need 1200 values for the argument v, which is not used anyway.
Prime can work with units, so why don't you add units to your calculations instead of writing them aside manually. That way you can use Prime to check your units for correctness. Prime does not accept units at the x and y axis of a 3D plot, though, so we have to divide the result of CreateMesh by the unit before we can use it for the 3D plot. In the picture I changed t.end to 10 s
The curve you want to plot is a 2D curve in a horizontal plane only. So why not just use an ordinary 2D plot?
