| The PLplot Plotting Library: Programmer's Reference Manual | ||
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pltr2: Linear interpolation for grid to world
      mapping using doubly dimensioned coord arrays (column
      dominant, as per normal C 2d arrays)
    Linear interpolation for grid to world mapping using doubly
    dimensioned coord arrays (column dominant, as per normal C 2d arrays).
    This routine can be used both for plcont and plshade.
    See also the Section called Contour Plots from C in Chapter 3 and
    the Section called Shade Plots from C in Chapter 3.
    
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