How to bound x-axis on histogram

[Tarang Saluja]

I'm using the command

histogram [cat var]

to output a histogram in stata. I only care about the values of the categorical variable which are greater than 0, but there are some negative values and they also show up in the histogram. I understand that I could drop those values and then generate the histogram again (and I have done that and seen it work), but I am wondering if I could restrict the histogram to when the values are greater than 0 during its generation.

[Leonardo Guizzetti]

What you want is an if qualifier, specifying the condition you want to be true. Something like

hist y if y>0

That said, you say you have negative values, so you should really try to understand why that is, and why you only want the positive values.

[Tarang Saluja]

Got it, thanks!