Column names on heatmap

I have created a heatmap of some data, and only the column names are appearing, i was wondering if there was any way to insert row names as well. It is a heatmap of a correlation table so the row names are the same as the column names

Thanks for the help

#Load data
data <- read_excel('finaldata.xlsx')
# create a data martix
matrix_data <- data.matrix(data)
# create heatmap
data_heatmap <- heatmap(matrix_data[ ,c(2:32)])


You can just specify the row names of matrix_data.
I'd assume something like rownames(matrix_data)<-colnames(matrix_data[,2:32]) before creating the heatmap should do it.

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