FPL >> FEM Plotting
Functions to save data in DX format
  FPL2dxappenddata          
  FPL2dxoutputdata
  FPL2dxoutputtimeseries
Functions to plot data              
  FPL2pdeshowmesh
  FPL2ptcshowmesh
  FPL2pdesurf
  FPL2ptcsurf
  FPL2trspdesurf
  FPL2trsptcsurf
  FPL2pdequiver
  FPL2ptcquiver
