I have data on a cylindrical grid r1<r<r2, 0<phi<6.07, z1<z<z2. To visualize them, I do Mark--Compute(cyl-to-Cartesian)--Unmark which looks fine; the plots leave a small wedge open, because 6.07 is a bit less than 2 Pi. [In order to close this gap, I would need to replicate data from phi=0 for phi=2 Pi before writing them, or is there a way to tell DX that my third coordinate is periodic?]
Now I want to see the bounding box of the grid points. If I plot it _after_ the coordinate transformation, I get a rectangular box that encloses all my grid points, which makes some sense. However, what I really want is the warped representation of my (r,phi,z) bounding-box. I.e. I would like to get a kind of torus with rectangular cross section. But if I use ShowBox on the imported data and then transform from cylindrical to Cartesian, I don't get anything useful. DX seems to represent the lines that make up the bounding box just by their end points, which after the transformation just leaves me the small wedge mentioned above. Even ShowBox--Tube--Mark--Compute(cyl-to-Cartesian)--Unmark just showed me the wedge. So my question is: Is there a way to interpolate more points into the lines that come from ShowBox, so I can then transform them and get something curved? W o l f g a n g -- ------------------------------------------------------------------------- | Wolfgang Dobler Phone: ++49/(0)761/3198-224 | | Kiepenheuer Institute for Solar Physics Fax: ++49/(0)761/3198-111 | | Schöneckstraße 6 | | D-79104 Freiburg E-Mail: [EMAIL PROTECTED] | | Germany http://www.kis.uni-freiburg.de/~dobler/ | -------------------------------------------------------------------------
