[R] the first name of the first column

MacQueen, Don m@cqueen1 @end|ng |rom ||n|@gov
Fri May 11 00:55:23 CEST 2018

I think you are confusing row names with the first column. The first column in mtcars is not alphanumeric:

> class(mtcars)
[1] "data.frame"
> class(mtcars[,1])
[1] "numeric"

> rownames(mtcars)
 [1] "Mazda RX4"           "Mazda RX4 Wag"       "Datsun 710"          "Hornet 4 Drive"      "Hornet Sportabout"   "Valiant"            (etc)

Perhaps you should make a copy of my_data that includes only the numeric columns?

Don MacQueen
Lawrence Livermore National Laboratory
7000 East Ave., L-627
Livermore, CA 94550
Lab cell 925-724-7509
On 5/10/18, 2:36 PM, "R-help on behalf of greg holly" <r-help-bounces using r-project.org on behalf of mak.hholly using gmail.com> wrote:

    Dear all;
    I need to run heatmap. Because my first column in my data is alphanumeric,
    I can not run as.matrix(scale(my_data)). So I need to make my data readable
    as in data(mtcars). In *mtcars *data the first column is alphanumeric and
    has no  name.
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