[R] barplot - easy for experienced, difficult for me
jim at bitwrit.com.au
Wed Oct 2 01:07:24 CEST 2013
On 10/01/2013 07:32 PM, happyR wrote:
> hey lobachevsky - thanks!
> but: Error in barplot.default (matrix, col = c("yellow","purple"), beside = TRUE) :
> 'height' must be a vector or a matrix
> what to do? :)
First, one must always avoid confusing the general case with a specific
instance. If you were standing by the side of the Coolgardie-Esperance
Highway, as I once was, trying to thumb a ride across the Nullarbor, it
would be a crushing disappointment if the driver who pulled over offered
to take humanity all the way to Ceduna.
You have accomplished something similar in the above example. "matrix"
is the sort of object that you want to pass to "barplot", not the
specific matrix named "spineless" that was specially prepared for you.
You are, in a sense, requesting that poor old "barplot" illustrate the
function that turns various sorts of things into matrices. Sorry,
happyR, it just doesn't compute.
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