Decision tree - node labels font size

[Carlos Crosetti]

Hi, I am playing with out-of-the box the Decision Tree feature and was able to plot a tree with 5 levels of depth. The nodes, branches and lines are OK, however I cannot read any of the labels nor numeric values, they are too small and zooming in does not help. Is there a way to expand the node labels text size and make the tree window scroll-able?

[Graham Williams]

Hi Carlos,

The short answer is no, not directly in Rattle.

However, the plot is generated underneath using rattle::fancyRpartPlot(). Have a look at the Log tab for the actual command used. This in turn uses rpart.plot::prp() and you can pass various tuning parameters to this function. Have a look at

> ?rpart.plot::prp

for details of the parameters.

So to test this you can generate the plot in Rattle and then copy the fancyRpartPlot() command from the Log tab into the R Console and then experiment:

> fancyRpartPlot(crs$rpart, main="Decision Tree")
> fancyRpartPlot(crs$rpart, main="Decision Tree", cex=1)
> fancyRpartPlot(crs$rpart, main="Decision Tree", tweak=1.5)

etc to change the font size.

Regards,
Graham

On 24 December 2016 at 03:11, Carlos Crosetti <carlos....@gmail.com> wrote:

Hi, I am playing with out-of-the box the Decision Tree feature and was able to plot a tree with 5 levels of depth. The nodes, branches and lines are OK, however I cannot read any of the labels nor numeric values, they are too small and zooming in does not help. Is there a way to expand the node labels text size and make the tree window scroll-able?

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[Carlos Crosetti]

Thanks Greg, the code works well

[Carlos Crosetti]

Thanks Greg, the code you sent works well.

On Saturday, December 24, 2016 at 1:37:46 AM UTC-3, Carlos Crosetti wrote: