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Re: st: How to change scale of yaxis from proportion with lots of decimals to per 100000


From   roland andersson <rolandersson@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: How to change scale of yaxis from proportion with lots of decimals to per 100000
Date   Sun, 18 Nov 2012 15:38:17 +0100

Nick
I have tried no 3 method. I still have problems. I have made a twoway
graph with a by statement which produces 4 graphs with different
yscales - no1 is from 0.00005 to 0.00015, no2 is from 0.0005 to
0.0025, no 3 is from 0.01 to 0.04 and no4 from 0.01 to 0.1. I want to
multiply all by 100,000.
I have individual data for about 2,000,000 infants and want to use the
original dataset. I tried the following command

twoway fpfitci nec ar,  by( pmatur, rescale legend(off)
l1title("Incidence rate per 100,000 live births")) xlabel(1985 1990
1995 2000 2005 2010)  ylabel(0.00005 "5" 0.0001 "10" 0.00015 "15")

gives the correct result for one of the graphs. I tried the following

twoway fpfitci nec ar,  by( pmatur, rescale legend(off)
l1title("Incidence rate per 100,000 live births")  y1label(0.00005 "5"
0.0001 "10" 0.00015 "15") ) xlabel(1985 1990 1995 2000 2005 2010)

but got error message that y1label was not allowed.

How can I make different ylabels for each graph?

Roland



2012/11/16 Nick Cox <njcoxstata@gmail.com>:
> There are various possible solutions.
>
> 1. -replace- the variable with itself multiplied by 100000.
>
> 2. -clonevar- the variable ditto.
>
> In either case, you will need to change the variable label if you are
> like me and put units of measurement in variable labels.
>
> 3. Stata will accept  e.g. -ylabel(42 "foobar")- and so -ylabel(1
> "100,000")- etc.
>
> 4. A helper command for #3 is -mylabels- (SSC).
>
> The principles here apply to nonlinear re-scales too. See
>
> SJ-8-1  gr0032  . . . . . . .  Stata tip 59: Plotting on any transformed scale
>         . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  N. J. Cox
>         Q1/08   SJ 8(1):142--145                                 (no commands)
>         tip on how to graph data on a transformed scale
>
> Accessible to all at http://www.stata-journal.com/sjpdf.html?articlenum=gr0032
>
> Nick
>
> On Fri, Nov 16, 2012 at 7:47 AM, roland andersson
> <rolandersson@gmail.com> wrote:
>> I want to make twoway graphs of the trend over time of the incidence
>> rate of a rare disease by four groups where this disease varies
>> strongly. In one group the disease has changed from 5 to 10 per
>> 100,000 live births, in another from 5000 to 10,000 per 100,000 live
>> births.
>> I want to do the graphs by(groups). My problem is that the yscale
>> shows the proportion with lots of decimals, eg 0.00005. I want to
>> multiply the yscale with 100,000 so that it shows the number per
>> 100,000 live births instead of the proportion with decimals. How can I
>> do it?
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