interp_scalar

(./FEM/interp_scalar.m)

Function Synopsis

[outq,jj]=interp_scalar(fem_grid_struct,q,x,y,j)

Help text

INTERP_SCALAR - interpolate scalar values onto scatter points
   INTERP_SCALAR Interpolates a scalar defined at all 2-D grid points
   in the fem_grid_struct onto the scattered points (x,y).

     INPUT : fem_grid_struct (from LOADGRID, see FEM_GRID_STRUCT)
   	      q - scalar field to interpolate
   	      x,y - points to interpolate to (optional)
   	      j - elements that contain x,y points (optional)

     If x,y are not passed in, INTERP_SCALAR prompts the user
     to specify a location with the mouse.  In this case,
     the location, element number, and interpolated vaule
     are returned through the first output argument, or else
     to the screen, as [x y j outq].

     If j is not passed in, INTERP_SCALAR locates the points
     within fem_grid_struct and returns the element list
     if two output arguments are provided.

    OUTPUT : outq - interpolated values
   	      j    - elements (optional)
   	      x,y  - mouse-specified point (optional)

      CALL : outq=interp_scalar(fem_grid_struct,q); (mouse-driven)
   	      [outq,j]=interp_scalar(fem_grid_struct,q,x,y);
   	      outq=interp_scalar(fem_grid_struct,q,x,y,j);

   Written by : Brian O. Blanton
   Summer 1998

Cross-Reference Information

belint         ./FEM/belint.m
el_areas       ./FEM/el_areas.m
is_valid_struct./FEM/is_valid_struct.m
is_valid_struct2./FEM/is_valid_struct2.m