SF.net SVN: matplotlib: [5441] trunk/matplotlib/doc/users/arraydata.rst

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Revision: 5441
          http://matplotlib.svn.sourceforge.net/matplotlib/?rev=5441&view=rev
Author:   efiring
Date:     2008-06-09 12:58:46 -0700 (Mon, 09 Jun 2008)

Log Message:
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Start of arraydata doc

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    trunk/matplotlib/doc/users/arraydata.rst

Added: trunk/matplotlib/doc/users/arraydata.rst
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--- trunk/matplotlib/doc/users/arraydata.rst	                        (rev 0)
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+.. _arraydata:
+
+***********************************************
+Plotting 2-D arrays or functions of 2 variables
+***********************************************
+
+In this chapter we will address methods for plotting a
+scalar function of two variables.  Here are some examples:
+
+* A photographic image, represented as a 2-D array of
+  colors; the grid is regular, with each element of the
+  array corresponding to a square pixel.
+
+* Earth surface elevation and ocean bottom topography,
+  represented as a 2-D array of heights; the grid is
+  rectangular in latitude and longitude, but the latitude
+  increment may not be uniform--often it will decrease
+  toward the poles.
+
+* A mathematical function of two variables, such as a
+  bivariate Gaussian probability density.
+
+Note: in this chapter we will assume the data to be plotted
+are on a grid.  If you have scalar data of two
+variables, but the data are not on a  grid - for
+example, sea level at island stations - then you will need
+to use an interpolation or other gridding routine
+before you can use any of the
+plotting methods we will discuss here.
+
+As a 2-D plotting library, matplotlib offers two basic
+styles of plot for scalar functions of two variables: an
+image style and a contour style.  The image style renders
+the data as either a continuously-varying field of color or
+a set of contiguous colored quadrilaterals.  Hence, the
+image style is a direct representation of the data array.
+The contour style is less direct; isolines of the data are
+calculated and then either plotted as lines or used to delimit
+colored regions.
+
+.. _image_styles:
+
+Image (or pcolor) styles
+========================
+
+some text
+
+.. _image:
+
+image
+-----
+
+image text and example
+
+.. _pcolor:
+
+pcolor
+------
+
+pcolor and pcolorfast, including quadmesh variant
+
+.. _contour:
+
+Contouring
+==========
+
+contour and contourf
+
+
+
+
+


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