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RE: st: RE: Graph twoway: Multiple axis and order of plots


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: RE: Graph twoway: Multiple axis and order of plots
Date   Thu, 6 Jul 2006 17:13:38 +0100

My idea is that Stata [sic] gave you what you asked 
for. Without knowing what you want -- and that is 
different -- I can't comment easily. Perhaps you 
want something like 

. twoway bar mpg rep78, yaxis(1 2)  yla(18 "1.8" 28 "2.8", axis(2)) 
|| line mpg rep78, yla(20 30, axis(1))

Nick 
n.j.cox@durham.ac.uk 

Peter Uhrmacher
 
> adding yaxis(1 2) was part of the solution, I only had yaxis(2) and 
> axis(2) in my code. However, there is still a minor problem left:
> 
> If I add
> 
> gen mpg2=mpg/10
> 
> to your example
> 
> and then do this (i.e. just use the newly created mpg2 instead of mpg 
> for the bars and divide the labels (i.e. the range) by 10 as well)
> 
> twoway bar mpg2 rep78, yaxis(1 2) yla(1.8(.2)2.8, axis(2)) || 
> line mpg 
> rep78, yla(20 30, axis(1))
> 
> STATA uses the same range of values for the left and right 
> axis. Any ideas?

Peter Uhrmacher

> Thx a lot, the yaxis(1 2) was the solution, I only had yaxis(2) and
> axis(2)...!
 
Nick Cox wrote:

>  > There is no concrete code to comment on here. I did this:
>  > . sysuse auto, clear (1978 Automobile Data)
>  >
>  > . collapse mpg, by(rep78)
>  > . l
>  >
>  >      +-----------------+
>  >      | rep78       mpg |
>  >      |-----------------|
>  >   1. |     1        21 |
>  >   2. |     2    19.125 |
>  >   3. |     3   19.4333 |
>  >   4. |     4   21.6667 |
>  >   5. |     5   27.3636 |
>  >      |-----------------|
>  >   6. |     .      21.4 |
>  >      +-----------------+
>  >
>  > . twoway bar mpg rep78, yaxis(1 2) yla(18(2)28, axis(2)) 
> || line mpg 
> rep78, yla(20 30, axis(1))
>  >
>  > and the line plot is on top of the bar plot, and I have 
> two separate 
> axes. Does that help?

Peter Uhrmacher

>  it seems that I am unable to solve a rather simple 
> problem... but I 
> hope you can. What I would like to have is a "graph twoway" 
> with a line 
> plot and a bar plot. the line plot is supposed to use yaxis1, the bar 
> plot is supposed to use yaxis2. at the same time, the bar plot is 
> supposed to appear in the background (so that the lines 
> appear on top of 
> it). however, whatever I try it seems that the plots that use 
> yaxis2 are 
> always put on top of the others that use yaxis1... (which in my case 
> means that the line plot is hidden behind the bars). Is there a 
> solution? I'm sure there is.

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