Plot 1D graph of axis from multivariate analysis
Description
Draw 1D plot of an axis from multivariate analysis. Useful for visualising an individual axis from
analyses such as PCA dudi.pca
or COA dudi.coa
.
It accepts a factor so that groups of points can be coloured.
It can also be used for graphing genes, and will only label n genes at the ends of the axis.
Usage
1 2 
Arguments
dfx 

ax 
Numeric, indicating column of 
classvec 
Factor, indicating subgroupings or classes in dfx or dfx[,ax] 
hor 
Logical, indicating whether the graph should be drawn horizontal or vertically. The default is vertically. 
s.nam 
Vector. labels of dfx, The default is row.names(dfx) 
n 
Numeric. Whether all rows should be plotted, n=10 would label only the 10 variables at the end of the axis. By default all variables (row of dfx) are labelled 
scaled 
A logical indicating whether the plot should be scaled to fit. The default is TRUE 
col 
A character or vector indicating the colour(s) for points or groups of points. If points are to be coloured according to a factor, length(col) should equal length(levels(classvec)) 
width 
A vector of length 2, which is the width (of a vertical plot) or height (of a horizontal plot). This can be increased if variable labels are unreadable. The default is c(2,1) 
... 
further arguments passed to or from other methods 
Author(s)
Aedin Culhane
See Also
between.graph
Examples
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