Difference between revisions of "Grid polar.m"

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  ncircles - number of radial circles
 
  ncircles - number of radial circles
 
                 in the grid, an integer
 
                 in the grid, an integer
 
+
 
     rmax    - maximum radius that the
 
     rmax    - maximum radius that the
 
                 grid must reach
 
                 grid must reach
Line 20: Line 20:
 
  phi      - a column vector of polar
 
  phi      - a column vector of polar
 
                 phi angles, radians
 
                 phi angles, radians
 
+
 
     rmax    - a coluim vector of radii
 
     rmax    - a coluim vector of radii
 
+
 
     L        - sparse Laplacian operator
 
     L        - sparse Laplacian operator
 
                 acting on functions defined
 
                 acting on functions defined

Revision as of 17:41, 5 June 2026


Generates a balanced polar grid in which the density of points does not increase towards the centre.

Syntax

[phi,r,L]=grid_polar(ncircles,rmax)

Arguments

ncircles - number of radial circles
               in the grid, an integer

    rmax     - maximum radius that the
               grid must reach

Outputs

phi      - a column vector of polar
               phi angles, radians

    rmax     - a coluim vector of radii

    L        - sparse Laplacian operator
               acting on functions defined
               as vector of values in the
               same order as the grid


See also

grid_igloo.m, grid_fibon.m, grid_plot.m, Integration grids

Version 2.11, authors: Chadwick Brett, Ilya Kuprov