coefplot: Add a line break to coefficient labels

[Emil Alnor]

I have a lot of coefficients which have long labels, so for layout purposes it would be good to be able to add line breaks. It is complicated a bit by the fact that I am using aseq and swapnames, because I am visualizing the effect of 1 independent variable on many different dependent variables.

With the autodata, this is what I want to acheive: That the label on the left side "Miles per gallon" has a line break, after 'Miles', i.e., it appears as:
Miles
per gallon

sysuse auto, clear
reg price trunk
estimates store price
reg mpg trunk
estimates store mpg
reg headroom trunk
estimates store headroom

coefplot ///
    (price, aseq(Price)) ///
    (mpg, aseq(Miles per gallon)) ///
    (headroom, aseq(Headroom (in.))) ///
    , keep(*trunk) swapnames legend(off)

Thanks!

[Andrew Musau]

You may try adding ASCII characters 10 and/or 13, although this is not a documented method of introducing a line-break.

sysuse auto, clear
reg price trunk
estimates store price
reg mpg trunk
estimates store mpg
reg headroom trunk
estimates store headroom

set scheme s1mono
coefplot ///
    (price, aseq(Price)) ///
    (mpg, aseq(Miles`=char(13)'`=char(10)'per gallon)) ///
    (headroom, aseq(Headroom (in.))) ///
    , keep(*trunk) swapnames legend(off)

Res.:

[Emil Alnor]

Thank you Andrew Musau . I hope I can ask one more question? How can I change the font size of the labels?

[Andrew Musau]

sysuse auto, clear
reg price trunk
estimates store price
reg mpg trunk
estimates store mpg
reg headroom trunk
estimates store headroom

set scheme s1mono
coefplot ///
    (price, aseq(Price)) ///
    (mpg, aseq(Miles`=char(13)'`=char(10)'per gallon)) ///
    (headroom, aseq(Headroom (in.))) ///
    , keep(*trunk) swapnames legend(off) ylab(,labsize(vsmall))

[Emil Alnor]

Thanks so much Andrew Musau ! One final question if you would: In my real data, the labels where I make line breaks are fairly long, meaning that after the line break, there i a quite large white area in the left side of the graph. Are there any way which I can instruct -coefplot to make the "data area" wider, so the labels are almost meeting the left border of the graph.

[Andrew Musau]

I do not know. Maybe show an example.

[Emil Alnor]

I do not know. Maybe show an example.

The problem is, that the "data area" is as wide with the linebreak as it is without the linebreak. It seems Stata adjusts the with based on the number of characters. What I want is a width as in the first graph:

sysuse auto, clear
reg price trunk
estimates store price
reg mpg trunk
estimates store mpg
reg headroom trunk
estimates store headroom

*short label, desired "data area" width
set scheme s1mono
coefplot ///
    (price, aseq(Price)) ///
    (mpg, aseq(Miles pr. gallon)) ///
    (headroom, aseq(Headroom (in.))) ///
    , keep(*trunk) swapnames legend(off) ylab(,labsize(vsmall))

*without linebreak
set scheme s1mono
coefplot ///
    (price, aseq(Price)) ///
    (mpg, aseq(Correlation between miles per gallon and trunk space)) ///
    (headroom, aseq(Headroom (in.))) ///
    , keep(*trunk) swapnames legend(off) ylab(,labsize(vsmall))

*with linebreak
set scheme s1mono
coefplot ///
    (price, aseq(Price)) ///
    (mpg, aseq(Correlation between`=char(13)'`=char(10)' miles per gallon `=char(13)'`=char(10)'and trunk space)) ///
    (headroom, aseq(Headroom (in.))) ///
    , keep(*trunk) swapnames legend(off) ylab(,labsize(vsmall))

[Andrew Musau]

You can force a negative outer gap.

sysuse auto, clear
reg price trunk
estimates store price
reg mpg trunk
estimates store mpg
reg headroom trunk
estimates store headroom

*short label, desired "data area" width
set scheme s1mono
coefplot ///
    (price, aseq(Price)) ///
    (mpg, aseq(Miles pr. gallon)) ///
    (headroom, aseq(Headroom (in.))) ///
    , keep(*trunk) swapnames legend(off) ylab(,labsize(vsmall))

*without linebreak
set scheme s1mono
coefplot ///
    (price, aseq(Price)) ///
    (mpg, aseq(Correlation between miles per gallon and trunk space)) ///
    (headroom, aseq(Headroom (in.))) ///
    , keep(*trunk) swapnames legend(off) ylab(,labsize(vsmall))

*with linebreak
set scheme s1mono
coefplot ///
    (price, aseq(Price)) ///
    (mpg, aseq(Correlation between`=char(13)'`=char(10)' miles per gallon `=char(13)'`=char(10)'and trunk space)) ///
    (headroom, aseq(Headroom (in.))) ///
    , keep(*trunk) swapnames legend(off) ylab(,labsize(vsmall)) ysc(outergap(-40))

[Emil Alnor]

Andrew Musau perfect, thanks for your kind help!