Stacked bar plot

["Lacroix Brigitte" <Brigitte.Lacroix@UCB-Group.com>]

 

Dear S-PLUS users,

I am using S-PLUS at a very basic level to build graphs.  So, this is maybe a very simple question, but  I have some issues to build a vertical stacked bar plot.

My data consists in  a  3 column  table . The first one contains time brackets (categories => x axis), the second and third ones  contain P1 and P0, which are probability of a score to be 1 or 0.

 

I have used the following code:

 

guiPlot("Stacked Bar",DataSetValues=

data.frame(as.factor(summary.obs$TIME),summary.obs$P1,summary.obs$P0))

It does work, but I still have some questions :

- How could I do to choose the color of filing, to add legends for the axis... ?
I have tried this code :
guiModify("BarPlot",Name="ESSAI",BarFillType="By bar",StartFillColor="Black",EndFillColor="Green") and have also replaced "By bar" by "Two Colors" but  none  of the two code works ...

- Is it possible to write the function using another code, like barplot(...)  ?  I have tried but did not manage to make it work... (In that case, I could use the options col, xlab... that I already know)

- I have converted the time brackets in A to S for the moment so that the categories are kept in the right order. Otherwise (with numbers) the order on the graph become: 1 11 12 13...19 2... instead of 1 2 3...11 12... How could  I choose the order ?

- Finally, I have a second  table  containing the same information, but simulated instead of observed probabilities. I would like to add stacked bars on the same graph, so that I would be able to compare simulated and observed data per time bracket on one graph. It would be very nice if someone could explain me how to achieve that...

Your help will be greatly appreciated !
Thank you !
Brigitte

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