MAHISTOGRAM procedure

Plots histograms of microarray data (D.B. Baird).


Options

SLIDES = factor
Slide to which each DATA unit belongs

SLIST = variate or text
Subset of slides to plot; default * i.e. all

NGROUPS = scalar
Number of groups into which to classify the DATA variate; default 100

COLOUR = scalar
Colour to use for the bars of the histogram

TRANSFORMATION = string
Whether to transform data to logarithms base 2 (log2, none); default none

SCALING = string
Whether to use a common scale when not using Trellis plots (common, none); default comm

NROWS = scalar
Number of rows on a page in a trellis plot

NCOLUMNS = scalar
Number of columns on a page in a trellis plot

TITLE = text
Title for the graph

YTITLE = text
Title for the y-axis

XTITLE = text
Title for the x-axis

ARRANGEMENT = string
Whether to use trellis or single plots (single, trellis); default trel

WINDOW = scalar
Window number for the graphs; default 3

DEVICE = scalar
Device number on which to plot the graphs

GRAPHICSFILE = text
What graphics filename template to use to save the graphs; default *


Parameter

DATA = variates
Data values to plot


Description

The data values are supplied, in a variate, using the DATA parameter. The SLIDES option supplies a factor to define the slides. By default a histogram is produced for the data from every one of the slides, but you can set option SLIST to a variate or text to define a subset of the slides to plot.

   The NGROUPS option defines the number of groups into which to classify the DATA variate, i.e. the number of bars in each histogram (default 100). The COLOUR option defines the colour to use for the bars. You can set option TRANSFORMATION=log2 to transform the DATA values to logarithms base 2 before plotting. The ARRANGEMENT option controls whether the histograms for the slides are plotted singly, in separate frames, or together in a trellis arrangement (the default). The SCALING option controls whether a common scale is used for the single plots, while the NROWS and NCOLUMNS options specify the numbers of rows and columns on the page in a trellis plot.

   The TITLE, YTITLE and XTITLE options can supply titles for the graphs, the y-axes and the x-axes, respectively. The WINDOW option specifies the window to use (by default 3), and the KEYWINDOW option can specify a window for a key (by default there is none). You can use the DEVICE option to plot to a device other than the screen. The GRAPHICSFILE option specifies then supplies a template for the file names.

 

Options: SLIDES, SLIST, NGROUPS, COLOUR, TRANSFORMATION, SCALING, NROWS, NCOLUMNS, TITLE, YTITLE, XTITLE, ARRANGEMENT, WINDOW, DEVICE, GRAPHICSFILE.

Parameter: DATA.


Action with RESTRICT

MAHISTOGRAM takes account of any restrictions on DATA or SLIDES.