Plot two graphs on one plot. function lines does not work
r
Solution
It "doesn't work" because the y-limits do not include the range of the second vector.
plot(tst_error, type='l', ylim=range( c(tst_error, tr_error) ) )
lines(tr_error, type='l', col='red')
It's not going to be a particularly interesting plot since the scale of the two vectors are so different. The red line's going to look like a completely flat line.
Problem
I want to plot two graphs on one plot. I read this post, but function `lines` does not work, nothing happens. I don't know what can be the problem. Any ideas? Edit. reproducible example: ``` > tr_error [1] 0.2314984 0.2314990 0.2314981 0.2314955 0.2314955 0.2314943 0.2314912 [8] 0.2314924 > tst_error [1] 0.001461264 0.001461767 0.001461001 0.001459936 0.001459626 0.001458594 [7] 0.001457719 0.001458288 > plot(tst_error, type='l') > lines(tr_error, type='l', col='red') ``` maybe there is second plot but it is higher?