pie chart - same colours for values

[Rob Pryce]

Hi all,

I am making several pie charts and I want the colours to be comparable across charts.

My data looks roughly as follows:

game winner1 winner2 n
1 rob rob 1
2 rob rob 1
3 rob rob 1
4 sarah rob 1
5 sarah sarah 1
6 sarah sarah 1
7 jon sarah 1
8 jon martin 1
9 jon martin 1
10 matt martin 1
11 matt martin 1
12 matt martin 1

The names are simply values - suppose rob=1 sarah=2 jon=3 matt=4 martin=5

Notice how "martin" didn't win any games in the first round, and "matt" didn't win any in the second. n is a column of 1s that allows me to make the pie chart.

I am using -graph pie n,over(winner1)- and -graph pie n,over(winner2)- but when I do this the pie for "jon" is the same colour as the pie for "martin" because it is the third pie.

Essentially, I want to specify that the pie colour is red if ="rob" etc.

Any help would be great.

I know from looking that Nick Cox thinks pie charts should be used for primary school children and senior executives only. The graphs are for the latter.

Thanks

Rob

[Nick Cox]

I could not have put it better myself. Apart from considering something more civilised, a reshaping of the data seems called for. That way, your separate pie charts know about each other.

clear 
input game str5 winner1 str6 winner2 n
1 rob rob 1
2 rob rob 1
3 rob rob 1
4 sarah rob 1
5 sarah sarah 1
6 sarah sarah 1
7 jon sarah 1
8 jon martin 1
9 jon martin 1
10 matt martin 1
11 matt martin 1
12 matt martin 1
end 
 
reshape long winner, i(game) 
graph pie n, over(winner) by(_j)