May be this helps:
mymatrix<- matrix (1:5, nrow=5, ncol=columnas, byrow=TRUE,
dimnames=(list(myrownames, c(1,2,3,4,5))))
#Error in matrix(1:5, nrow = 5, ncol = columnas, byrow = TRUE, dimnames =
(list(myrownames, :
# object 'columnas' not found
myrownames[which.max(nchar(myrownames))]
#[1] "Ciencias Sociales y Jurídicas"
nchar(myrownames)[which.max(nchar(myrownames))]
#[1] 29
A.K.
>Hello,
>
>I want to modify margin options in a barplot into a loop. I have, for example,
>a matrix like this:
>
>myrownames <- c("Arte y Humanidades","Ciencias Sociales y
Jurídicas", "Ciencias de la Salud","Ciencias", "Ingenierías y
arquitectura")
>mymatrix<- matrix (1:5, nrow=5, ncol=columnas, byrow=TRUE,
>dimnames=(list(myrownames, c(1,2,3,4,5))))
>my_strings_length <- nchar(rownames(mymatrix))
>[1] 18 29 20 8 26
>
>I want to find automatically the highest value in my_strings_length, i.e 29.
>¿how can I do it?
>
>many thanks,
>
>--
>==================================
>Ramón Ovelar
>Campus Virtual Birtuala UPV/EHU
>Tel: (34) 94 601 3407
>http://campusvirtual.ehu.es
>University of the Basque Country
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