Histogram x-axis does not start flush at 0

[Ola Hashim]

Hello all,
I am trying to create a histogram where the x-axis starts exactly at 0, with the first bin touching the y-axis. However, even when the first bin clearly starts at 0, Stata leaves visible space between the y-axis and x = 0. Please see example screenshot below after I input:

histogram Pubs, width(100)
(bin=8, start=0, width=100)



Is there a way to force the x-axis to start exactly at 0 (i.e., eliminate this left-side gap), or is this behavior inherent to how histogram scales axes in Stata?

Thank you,
Ola

[Andrew Musau]

This has come up before in the forum, and I made the point that this behavior appears to be a default of histogram, but not of twoway histogram, which addresses this. Consider:

sysuse auto, clear
qui sum weight
gen cweight= weight- r(min)

hist cweight, title(Histogram: Default) saving(gr1, replace)
tw hist cweight, title(Twoway Histogram: Default) saving(gr2, replace)
tw hist cweight, plotregion(margin(zero)) title(Twoway Histogram: Adjusted) saving(gr3, replace)
gr combine gr1.gph gr2.gph gr3.gph

Res.: