Plotting linear graphs from dummy variables in Stata

Question

I want to plot linear graph of the fraction of 1's and 0's I have in my main variable of interest by gender.

I know how to do that using bargraphs, either using count or mean but these commands do not seem to work in twoway graphs.

Can someone provide me with a quick guide?

Answer 1

OP reports in a comment that this works:

graph bar (mean) fertzer, over(sexhead2) by(wave)
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Here fertzer is an indicator variable (dummy, so-called) with value 1 if households use fertilizer and 0 otherwise; sexhead2 is also an indicator for household head being male or female and wave indicates year 2011 or 2012.

But trying to get a line graph with this syntax fails:

graph twoway (mean) fertzer, over(sexhead2) by(wave) 
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Here is an analogue of this question with syntax that works:

sysuse auto, clear 

gen himpg = mpg > 20 

egen mean = mean(himpg), by(foreign rep78) 

line mean rep78, by(foreign) ytitle(fraction with more than 20 miles/gallon) yla(, ang(h)) sort 

twoway connected mean rep78, by(foreign) ytitle(fraction with more than 20 miles/gallon) yla(, ang(h)) sort 
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With twoway, unlike graph hbar, graph bar or graph dot you must create the means as a new variable before graphing. Syntax such as (mean) is not offered with twoway.