commandline session
> test labeli barplot(labeli,test)
Error in -0.01 * height : non-numeric argument to binary operator
> barplot(test)
> barplot(labeli)
Error in -0.01 * height : non-numeric argument to binary operator
> datavisual library(nutshell)
Error in library(nutshell) : there is no package called ‘nutshell’
> barplot(datavisual)
Error in barplot.default(datavisual) :
'height' must be a vector or a matrix
> datavisual.m
Error: object 'datavisual.m' not found
> doctorates.m datavisual.m datavisual.m datavisual.m
math phy che
[1,] 20 30 50
> barplot(datavisual.m)
> datavisual.m
math phy che
[1,] 20 30 50
> beautifulwork png(file="datavisualbarplot.png")
> barplot(datavisual.m)
> dev.off()
null device
1
>
