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My Photo title – UML Activity Diagram

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UML Notation – a few examples of key diagrams Class diagram of the 13 types of diagrams of the Unified Modelling Language 2.0 (Photo credit: Wikipedia)

1) Class Diagram

Interaction Diagram

Sequence Diagram

State Diagram

Entity Life History

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James Goode
Tendron Systems Ltd
http://www.tendron.net

Example of UML notation

Image An example of the UML notation, which is widely used for software design and development, especially by software houses and consultancies. Since its creation in late 1990’s, UML has rapidly become the most popular method for software design, replacing a legion of earlier approaches.

James Goode
Tendron Systems Ltd
http://www.tendron.net

Example R code for graph with two y axes

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Example code to produce a plot with two y axes using R. R is available free from the R CRAN repository.

```# #  Author:   James Goode #            Tendron Systems Ltd # #  Example plot with two y axes # n = 150      # number of points y1 = cumsum(rnorm(n)) y2 = cumsum(rnorm(n, mean=0.5))```

``` par(mai=c(.9, .8, .4, .8))   # margin size, in inches, c(bottom, left, top, right) plot(1:n, y1, type="l", col="blue", xlab="X values", main="Plot with two axes") par(new=TRUE) plot(1:n, y2, type="l", ann=FALSE, yaxt="n") axis(4) legend(x="topleft", bty="y", lty=c(1,1), col=c("blue","red"), legend=c("Line 1 (left y-axis)", "Line 2 (right y-axis)")) ```