r - Individual variables from the top row of my dataframe are not recognized as objects

Question

I am really new to "R" and stackoverflow here a beginner question it seems so simple that I can not find the answer in the net...

I loaded my data:

df<- read.csv2("HOR.csv", na="NA",header = TRUE)

Now I would like to get an overview from individual variables of my df.

I use

summary(df)

and that works...

But when I try this with individual variables/columns, I get an error

Object not found

summary(A)

eg. the console says:

Error in summary(PSumme) : Object 'PSumme' not found

It is a very basic question but i can not do any type of analysis since it seems that R does not recognize any of my columns as objects, I get the same error when I try adding or subtracting columns with each others or trying to change variables e.g.:

PSumme * -1

I have already tried tibble and other commands to turn the columns heads into variables and it seems to work but the variables are not treated as objects.

Bests and ty for your time!

question from:https://stackoverflow.com/questions/65893187/individual-variables-from-the-top-row-of-my-dataframe-are-not-recognized-as-obje

Answer 1

Waitting for answers