legends problems

General
1

Im having some problems plotting point and line in a single plot or graph. How I can plot the variable ‘HG’ versus ‘LG’ as points, and then adding other variable ‘AZ’ versus ‘LG’ as a line in the same plot ?

3

Excellent, make sense. Is possible create a legend with two different symbols ? I used this legend(#, #, legend=c("name", "name"),
col=c("darkmagenta", "black"), pch=4, lty=1, cex=0.8) but the legend only show one type of symbol.

4

you need to position a legend.

plot(mtcars$mpg,mtcars$drat)
lines(mtcars$mpg,mtcars$drat)
legend("bottomright",
       legend=c("name1", "name2"),
  col=c("darkmagenta", "black"),
  pch=4,
  lty=1, 
  cex=0.8)
5

is not working, see my legend below

000159

6

What isn't working ?

1 Like
7

Because name 1 is a point, and name 2 is a line.

8 
plot(mtcars$mpg,mtcars$drat,type="p",pch=4,col="darkmagenta")
lines(mtcars$mpg,mtcars$wt,type="l",lty=1,col="black")
legend("bottomright",
       legend=c("drat", "wt"),
       col=c("darkmagenta", "black"),
       pch=c(4,NA),
       lty=c(NA,1), 
       cex=0.8)
1 Like
9

Thanks, that was great!

10

This thread is continued at Different symbols in legend