Short reference lines in Stata

[paulvonhippel]

Using the twoway() command, how do I add a reference line that runs from say (1,0) to (1,10)? The option xline(1) almost works, but it runs all the way to the top of the graph. I only want to run up to y=10.

[Bjarte Aagnes]

You can add a second tw using the ||-notation:

tw scatteri -5 -5  15 5 || pci  0 1 10 1

[Marcos Almeida]

I'm sure you know this, but it can be helpful to others: the quick way is to use the "add line" tool.

[paulvonhippel]

The "add line" tool in the Graph Editor?

[Bruce Weaver]

The -pci- approach suggested by Bjarte Aagnes in #2 is the way to go, I think. Here's another example of that approach.

clear *
sysuse auto
graph twoway scatter mpg weight || pci  15 2500 25 2500