The following plot styles differ from those above in that, regardless of whether a three-dimensional plot is being produced, they read in datapoints with ,
and
coordinates in three columns. The first two are useful for producing two-dimensional representations of
surfaces using colours or contours to show the magnitude of
, while the third is useful for producing three-dimensional graphs of such surfaces:
colourmap
contourmap
surface
They are discussed in detail in Sections 1.12, 1.13 and 1.14.1 respectively.