Modify the surf function to plot a surface including the end points of incomplete data matrix?

The surf function creates surfaces based on four points. But for the edge of the sample data below, there are only three points available. Is there a better way to plot this surface or is there a clever way to alter the surf function to use three points when that's all that's available?

x = [    
    23    25    34    36    40;
    45    50    56    70   NaN;
    44    55    66   NaN   NaN;
    57    70   NaN   NaN   NaN;
    61   NaN   NaN   NaN   NaN;
    ];

surf(x)

Answer 1

[Doug Hull]

You would need to make patches instead of surface if you want triangles. See patch command.