Plot two graphs in same plot in R

Question

I would like to plot y1 and y2 in the same plot.

x  <- seq(-2, 2, 0.05)
y1 <- pnorm(x)
y2 <- pnorm(x, 1, 1)
plot(x, y1, type = \"l\", col = \"red\")         


        

Answer 1

You could use the ggplotly() function from the plotly package to turn any of the gggplot2 examples here into an interactive plot, but I think this sort of plot is better without ggplot2:

# call Plotly and enter username and key
library(plotly)
x  <- seq(-2, 2, 0.05)
y1 <- pnorm(x)
y2 <- pnorm(x, 1, 1)

plot_ly(x = x) %>%
  add_lines(y = y1, color = I("red"), name = "Red") %>%
  add_lines(y = y2, color = I("green"), name = "Green")