Plot columns of a matrix as stacked areas.
matrix to polygon: Plot columns of a matrix
as stacked areas.
mat2pol( pm,
perm = 1:ncol(pm),
x = as.numeric(rownames(pm)),
col = rainbow(ncol(pm)),
yl = 0:1,
append = FALSE,
... )pm |
Numerical matrix. |
perm |
integer vector of length |
x |
Numeric. The x-axis of the plot. |
col |
Colors of the areas. |
yl |
y-axis limits. |
append |
Logical. Should the polygons be added to an exiating plot |
... |
Further parameters passed to |
The function is originally intended to plot stacked
probabilities, hence the default of 0:1 for the y-axis.
A matrix of ncol(pm)+1 columns with the first equal to 0,
and the remaining the cumulative sum of the columns of
pm[perm].
The function is called for its side effect - the stacked polygons.
Bendix Carstensen
M <- cbind( sort(runif(10)), sort(runif(10)), sort(runif(10)) ) pm <- sweep( M, 1, apply(M,1,sum), "/" ) mat2pol( pm )
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