How to count the same character string in R

Question

[j_weld]

I have different cancer types like this (the unique cancer types are 36). I want to know the number of each cancer type.

[cpad0112]

$ summary(as.factor(cancers))

cancers is the vector storing values.

Answer 1

[rpolicastro]

table from base R, or count from the dplyr library will do this.

Answer 2

[seidel]

rpolicastro got the answer, but spelling it out explicitly here because table() is a great function for counting word or item frequencies, and it's fun to see the output:

> cancers <- c("CLL",
              "BLCA",
              "LUAD",
              "BLCA",
              "KIRC",
              "KIRC",
              "GBM")
> table(cancers)
cancers
BLCA  CLL  GBM KIRC LUAD 
   2    1    1    2    1