Twoway hist: condition x vs. all observations

[Kathrin Me]

Hi,

I am trying to look at the frequency distribution of the variable total_sales, once for all observations and once when _merge = 3. I am using the following code:

twoway (histogram total_sales, bin(20) freq color(navy)) (histogram total_sales if _merge == 3, bin(20) freq fcolor(none) lcolor(black))

I get the same amount of bars, but the bars do not exactly lay on top of each other. However, I would like to see how many observations out of all observations also fulfill _merge == 3 (and are within the same bar). Is this possible?

(I am unable to provide a data example, sorry about that.)

Best,
Kathrin

[Andrew Musau]

help twoway__histogram_gen

to get the data, then use twoway bar to graph.

[Nick Cox]

I would not use the bin() option here, because choosing the same number of bins won't ensure that the same bins are defined.

I would choose start() and width() options consistently.

[Kathrin Me]

I had tried out the width()-option, but not in combination with the start()-option. Thanks Nick, this worked!