[R] plots

[David Stevens]

David Carlson's solution is obviously better! (sorry, I just saw it)

David Stevens

On 3/14/2014 4:57 PM, David Stevens wrote:
> Renalda - your figure got stripped out. I'll assume you mean to have 
> depth on the vertical axis with a zero at the top and  increasing (+) 
> depth as you go down. This is pretty simple to do.
> 1) use the (-) of depth on the y-axis
> 2) make the plot without the y-axis labels (yaxt='n')  using 
> ylim=c(-(max(depth)),0)
> 3) add back an axis using the levels you want and (-) values
>    axis(2,at=c(what you want, negative),labels=c(what you want, 
> positive))
> voila
>
> e.g.
> depth <- 1:10
> density <- 2:11
> plot(density,-depth,ylim=-rev(range(depth)),yaxt='n')
> axis(2,-c(0,2,4,6,8,10),labels=c(0,2,4,6,8,10) )# if you want labels 
> at 0,2,4,6,8,10
>
> David Stevens
>
> Good luck
> On 3/14/2014 1:55 AM, Renalda Munubi-Misinzo wrote:
>> I would like to have a  plot with values in a reversed order (as 
>> shown in
>> fig 2).  I tried to plot the graph in R using the following codes
>>
>> plot(density,depth,pch=as.numeric(species),xlab="fish density
>> (#/m2)",ylab="water depth (m)")
>>
>> legend(locator(n=1),legend=c("Tropheus brichardi","Petrochromis
>> kazumbe"),pch=1:2)
>> unfortunately I can not reverse the axis to get a plot like the one 
>> shown
>> in fig.2 Please can you help me with the codes?
>>
>> Thanks you
>> Renny
>>
>>     [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide 
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>

-- 
David K Stevens, P.E., Ph.D.
Professor and Head, Environmental Engineering
Civil and Environmental Engineering
Utah Water Research Laboratory
8200 Old Main Hill
Logan, UT  84322-8200
435 797 3229 - voice
435 797 1363 - fax
david.stevens at usu.edu