R help - Oct 2011 - barplots

Hello,

I have somewhat of a weird data set and am attempting to create a barplot
with it.

I have 8 columns with different variables and their percentages. I have 1
column with representations of 4 different treatments the variables undergo.
I also have 1 column with year the data was recorded. I want to create a bar
plot that plots all 8 variables grouped by treatment and year.

I've tried creating subsets of each of the variables, no luck.

My variables are arranged similar to this:

Vascular.plants Solid.rock Gravel.and.cobbles
            72.5        1.0                  5
           67.5        2.0                  6
            67.5        2.5                  9
            59.0        2.0                 25

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On 10/07/2011 08:16 AM, Daniel Winkler wrote:
> Hello,
>
> I have somewhat of a weird data set and am attempting to create a barplot
> with it.
>
> I have 8 columns with different variables and their percentages. I have 1
> column with representations of 4 different treatments the variables
undergo.
> I also have 1 column with year the data was recorded. I want to create a
bar
> plot that plots all 8 variables grouped by treatment and year.
>
> I've tried creating subsets of each of the variables, no luck.
>
> My variables are arranged similar to this:
>
> Vascular.plants Solid.rock Gravel.and.cobbles
>              72.5        1.0                  5
>             67.5        2.0                  6
>              67.5        2.5                  9
>              59.0        2.0                 25
>
Hi Daniel,
If you want the grouping indicated by nested bars, see the barNest 
function in the plotrix package.

Jim

Hi,

Another way to do that is with function barchart() in package lattice.
Barchart requires a function which relates your variables with the option to
specify groups.
Check the examples (are under xyplot help) to apply them to your case.

Regards,
Carlos Ortega
www.qualityexcellence.es


On Thu, Oct 6, 2011 at 11:16 PM, Daniel Winkler
<winkler.de@gmail.com>wrote:
> Hello,
>
> I have somewhat of a weird data set and am attempting to create a barplot
> with it.
>
> I have 8 columns with different variables and their percentages. I have 1
> column with representations of 4 different treatments the variables
> undergo.
> I also have 1 column with year the data was recorded. I want to create a
> bar
> plot that plots all 8 variables grouped by treatment and year.
>
> I've tried creating subsets of each of the variables, no luck.
>
> My variables are arranged similar to this:
>
> Vascular.plants Solid.rock Gravel.and.cobbles
>            72.5        1.0                  5
>           67.5        2.0                  6
>            67.5        2.5                  9
>            59.0        2.0                 25
>
>        [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help@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.
>
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