Gene Expression Colormap 1.0

a simple function that returns a colormap, C, for visualizing gene expression. C is just a N x 3 matrix [R G B] describing the range of color values.example usage: C = exp_colormap('blue-yellow',64); colormap(C);called without any arguments, it returns a [3 x 64] green-red colormap.options for 'colors' are: 'blue-yellow' 'green-red' 'yellow''N' represents the number of degrees of color to use. the default is 64.generally speaking, the two-colored maps are appropriate for visualizing expression data which is normalized to a reference condition, e.g. to show whether expression is lower (blue or green) or higher (yellow or red) than the reference.the single-color yellow map ('yellow') is appropriate for displaying levels of gene expression which are not compared (necessarily) to a single reference, and this is similar to the colormap used in the D-chip expression analysis software.the colormaps returned range monotonically.

Requirements:	No special requirements
Platforms:	Matlab
Keyword:	Analysis,  Colormaps,  Condition,  Dchip,  Green,  Higher,  Lower,  Monotonically,  Normalized,  Reference,  Referencethe,  Returned,  Singlecolor,  Softwarethe,  Twocolored,  Yellow
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