Twoway scatter plot: how to modify axis length

[Javier Vasquez]

Hello,

This is my first post here so if I did something wrong I apologize.

I'm working with a dataset from Comtrade, specifically with information about trade values between Italy, Belgium, Mexico, Israel, Japan and USA. I was trying to make the same graph (Graph 1) and I almost get it. The problem is that I don't know how to put together both x axis and y axis (from the origin) in order to have no space after the beginning.

I run the following code:

twoway scatter porcentaje_com porcentaje_pib, title(" ", margin(b=1)) mlabel(reporter) mlabcolor(black) mlabv(pos) graphregion(fcolor(white)) ytitle("Porcentaje del comercio" " estadounidense con la UE", orientation(horizontal) margin(0 -35 80 0) size(small)) ylab(, ang(hor) labsize(small)) xtitle("Porcentaje del PIB de la UE", margin(0 -45 0 0) size(small)) xlab(, labsize(small)) legend(off) mcolor(ebblue) msize(small) || function y=x, range(0 25) n(2) aspect(1) lcolor(black)

And I got the Graph 2

I hope you understand my question.

Thanks!

PD: the idea is basically to force the line to touch both margins.

[Joao Pugliese]

Try adding xsc(r(0 25)) as option.

xsc is short for xscale, which defines the scale for axis y. r(0 25) means "range from 0 to 25".

[Javier Vasquez]

Joao,

I added xsc(r(0 25)) as option but it didn't work. I don't know if I explained myself well but I want to force the 45 degree line to touch both margins as Graph 1

[Nick Cox]

This is hard to follow. No data example, different data in two graphs, etc. I don't know what "touch both margins" means unless that refers to corners (vertices). But two principles:

1. Stata won't omit data points because of axis scale or axis label choices.

2. If you want a line of equality as diagonal from bottom left to top right you need something more like xsc(r(0 80)) ysc(r(0 80)) aspect(1) and range(0 80) on the function,

[Javier Vasquez]

Nick,

I'm sorry. I'll try to explain it better.

It doesn't matter both graphs differ in data. I just want to force the 45 degree line to touch both the origin (the problem in my graph is that both 0 axis don't match as graph 1) and the right margin.
I tried with your code, which was correct by the way, but I don't want to change the slope.

PD: if you see Graph 1, the corner exactly starts from both 0 axis. In contrast, Graph 2 (my output) starts from something before 0.

[Nick Cox]

See https://www.statalist.org/forums/for...rgin-in-a-plot

[Javier Vasquez]

Nick,

It worked! Thank you so much