Bar charts

[Kanyo Ledi]

Good morning stata users
I need assistance please.

I am working on longitudinal data. I have a variable measured at 7 different time points and have categorized all 7 variables as "<50", "50 -1000" and ">1000" . So i am trying to compute stacked bar graphs containing all 7 variables in one graph. The x axis would be each of the 7 categories at each time point and on the y axis the proportion of the people in each of the categories.


Thanks

[Nick Cox]

There is some inconsistency here.

a variable measured at 7 different time points

7 variables categorised as "<50", "50 -1000" and ">1000"

7 categories at each time point

A Stata variable is in other terms a column or field in your data set.

I am reading this as meaning really

one variable with 3 categories

one time variable with 7 distinct values

In the absence of a data example (FAQ Advice #12) here I use the Grunfeld data bundled with Stata to show some technique. I bin invest into three categories; you already have the analogue.

catplot is from SSC.

webuse grunfeld, clear 

gen invest_bin = cond(invest < 50, 1, cond(invest < 500, 2, 3)) if invest < . 
label def bin 1 "< 50" 2 "500 - <500" 3 "{&ge} 500"
label val invest_bin bin 

catplot invest_bin year if year < 1942, legend(pos(6) row(1)) ysc(alt) percent(year) asyvars stack