code efficiency combining graphs without having to clear all

[Denise Vella]

I've plotted two graphs . However I have to run a long do file of code.

I would like to plot 2 graphs

First one: with -failure reason- over -gender- FOR failures within 2 years
Then plot another graph with -failure reason- over -gender- FOR failures AFTER 2 years

However, as the -graph- does not support -if years2== 1- I keep having to run my long do file
then

drop if years2== 0 run the following code

graph bar (percent), over(failurereason) over(gender) asyvars

Then ...

clear all 
/// Run the code again

drop if years2 == 1 
graph bar (percent), over(failurereason) over(gender) asyvars

If you could suggest a code where I could keep the dataset and run the above codes without having to -clear all- I could then keep by 2 graphs (years2=0 ; year2=1) on the same graph page by using

graph combine m1 m2

thanks

[Leonardo Guizzetti]

There's no need to clear your dataset between graphing commands. Also, -graph- (like pretty much all other Stata commands) support if/in qualifiers. Something like the below should work (though note it is untested).

[quote]
graph bar (percent), over(failurereason) over(gender) asyvars name(m1, replace)
graph bar (percent) if years2==0, over(failurereason) over(gender) asyvars name(m2, replace)
graph combine m1 m2
[/code]