mapc2p.f.html
Source file:   mapc2p.f
Directory:   /Users/rjl/git/clawpack/classic/examples/advection_2d_annulus
Converted:   Wed Dec 28 2016 at 22:29:31   using clawcode2html
This documentation file will not reflect any later changes in the source file.

 
c
c     =====================================================
      subroutine mapc2p(xc,yc,xp,yp)
c     =====================================================
c
c     # on input,  (xc,yc) is a computational grid point
c     # on output, (xp,yp) is corresponding point in physical space
c
      implicit double precision (a-h,o-z)
c
c     # Polar coordinates, xc = r,  yc = theta
      xp = xc * dcos(yc) 
      yp = xc * dsin(yc)
      return
      end