Trouble drawing a correlation chart

Could you paste what you've tried? We'd need your actual code together with the errors or warnings it produces to understand the problem.

Copy your code here, placing it inside

That formats it so we can take a copy, paste it and execute it ourselves .

Here is my code

PerformanceAnalytics::chart.Correlation(iris, is.numeric)

I can't find any parameter of chart.Correlation that takes that "is.numeric" value. My understanding is that everything must become numeric before calling chart.Correlation. For iris, that means "Species".

This looks to run correctly:

flowers <- iris  # I'd rather leave 'irs" unchanged.
flowers$Species <- as.numeric(flowers$Species)
chart.Correlation(flowers,
                  histogram = TRUE, method = c("pearson"),
                  pch = 2)