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Re: st: change range of axis in bar graph (start counting from 1, not from 0)


From   Eric Booth <ebooth@ppri.tamu.edu>
To   "<statalist@hsphsun2.harvard.edu>" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: change range of axis in bar graph (start counting from 1, not from 0)
Date   Mon, 4 Jul 2011 17:27:59 +0000

<>

Something like this?
***********
clear
set obs 100
foreach x in Social schools {
g `x' = int(runiform()*4)+1
}
foreach y in gender education {
g `y' = rbinomial(1, .45)
	}
l in 1/5

graph hbar (mean) Social if schools <=3, over(gender) over(education) ///
blabel(bar,format(%9.2f)) ///
ytitle(Mean) ///
title(Kompetence gained: Social) ///
scheme(s1mono) ylab(1(1)5) exclude0
************
- Eric
__
Eric A. Booth
Public Policy Research Institute
Texas A&M University
ebooth@ppri.tamu.edu

On Jul 4, 2011, at 4:51 AM, Hilde Karlsen wrote:

> Dear statalist
> 
> I cannot gain control over the "x-axis" in my bar chart. I have read
> the manual on -graph bar-, and I see that there really is no 'x-axis'
> in bar charts, so I figure that what I am trying to do is to change
> the range of the y-axis.
> 
> My syntax looks like this:
> 
> graph hbar (mean) Social if schools <=3, over(gender) over(education) ///
> blabel(bar,format(%9.2f)) ///
> ytitle(Mean) ///
> title(Kompetence gained: Social) ///
> scheme(s1mono)
> 
> This syntax results in horisontal bars over gender over education with
> an axis which ranges from 0 to 4. However, this does not mach how the
> dependent variable is defined in the data, i.e. ranging from 1 to 5.
> What I would like is to have the axis beginning to count at 1 and
> ending at 5.
> 
> I have read this page <
> http://www.stata-journal.com/sjpdf.html?articlenum=gr0019 > and it
> seems to do exactly what I want; however, the example given is for a
> twoway diagram, for which we can speak of an x-axis as well as a
> y-axis. In this number of the Stata Journal, Nicholas J.G. Winter
> writes that:
> 
> "The issue is that the range displayed for an axis depends on the
> interaction between two sets of options (or their defaults): those
> that control the axis range explicitly, and those that label the axis.
> The range can be expanded either by explicitly specifying a longer
> axis (e.g., with xscale(range(a b))) or by labeling values outside the
> range of the data."
> 
> Then he goes on to offer some solutions which I have tried but which
> does not work on the bar chart,  i.e. I have the range expanded to
> include "5", but I cannot have the axis begin counting from 1; it
> insists on counting from 0, which means that expanding the range to
> include 5 in fact produces an axis with 6 values.
> 
> I have also tried to use the graph editor to fix this; however, it
> seems the graph editor does not allow one to choose a minimum value
> higher than zero. (?)
> 
> Any help on this matter will be highly appreaciated.
> 
> Best regards,
> Hilde
> *
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