ggplot2 and .xls

Greetings. I have a database of more than 5 thousand rows and 20 variables that I export to Excel. I import it to R without problems and I can plot with "plot", etc ... But not with the "ggplot2" package.

I would really encourage you to review the following guide, FAQ: Tips for writing R-related questions.
For example, the guide emphasizes asking coding questions with formatted code-chunks and a reprex.

You may have noticed folks here requesting minimal reprexes, that's because asking questions this way saves answerers a lot of time.

Reproducible Examples:

  • help make your question clear and replicable
  • increases the probability folks will reach out and try to help,
  • reduces the number of back-and-forths required to understand the question,
  • and makes your question and suggested solutions more useful to folks in the future researching similar problems.