Re: Histograms on same scale

[Sundar Dorai-Raj <sundar.dorai-raj@PDF.COM>]

Andre.Mery@aventis.com wrote:
> Hi,
>  
> I am just drawing 2 histograms side by side (using par(mfrow = c(1,2)). 
> The highest class of the 1st one is up to 24, although the highest class 
> of the 2nd one is up to 20. So, the y-axis of the 1st one goes up to 24, 
> although the y-axis of the 2nd one goes up only to 20.
>  
> In order to have a nice visual comparison between these 2 plots, how can 
> I force the y-axis of the 2nd one to be plotted up to 24? I couldn't get 
> the proper instruction.
>  
> Thanks for any help.
>  
>  
Use the ylim argument in both plots:

par(mfrow = c(1, 2))
hist(x1, ylim = c(0, 24))
hist(x2, ylim = c(0, 24))

--sundar