DATA MINING Desktop Survival Guide by Graham Williams
Desktop Survival Project Home List of Figures List of Tables Data Mining Data Mining Data Mining with Rattle Introduction Data Transform Explore A Model Building Framework Unsupervised Modelling Two Class Models Multi Class Models Regression Models Text Mining Evaluation and Deployment Moving into R Troubleshooting R for the Data Miner R Data Graphics in R Understanding Data Preparing Data Building Models Evaluating Models Algorithms Apriori Bagging Bayes Classifier Boosting Cluster Analysis Conditional Trees Hierarchical Clustering K-Means K-Nearest Neighbours Linear Models Logistic Regression Neural Networks Support Vector Machines Text Mining Open Products AlphaMiner Borgelt Data Mining Suite KNime R Rattle Weka Closed Products C4.5 Clementine Equbits Foresight GhostMiner InductionEngine ODM Enterprise Miner Statistica Data Miner TreeNet Virtual Predict Appendicies Glossary Bibliography Index

Multiple Plots

On any device, a sequence of graphics may be produced. For a screen device, for example, each call of the plot function will effectively wipe the active screen device and start drawing a new graphic. Multiple plots to the same device, without wiping the screen, can be achieved by setting the new option to true for each plot:

> plot(a)
> par(new=TRUE)
> plot(b)
> par(new=TRUE)
> plot(c)

On a MS/Windows device there is the opportunity to interactively cycle through the sequence of graphics, after turning on the Recording option of the History menu of the graphics Window. You can then use the Page Up and Page Down keys (or the menu) to cycle through the sequence of graphics. This is not available on the X11 screen device under Unix and GNU/Linux.

When displaying on a file device, multiple plots equate to multiple pages. Some file devices, such as postscript and pdf support multiple pages. Many print devices support the production of multiple files for multiple plots, through setting onefile=FALSE and the file name to something like file="plot%03d".

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