Hi All, I'm struggling to add text automatically to plots. I have a series of scatterplots that I have stored in a script because the underlying data changes often and the plots need to be regenerated. I use the scatterplot function (defined in Rcmd, I believe). When one of the variables is a factor, a boxplot is drawn over the scatter of the other variable. In the case where x is a factor with 10 values, I'll see 10 vertical boxplots. So far, so good.
I was asked to show other stats on top of those scatterplots, e.g. mean, number of observations, etc. I can find those values, but the problem is I don't know how to put them on the plot, given I don't want to look at each plot one by one and manually identify the locations where I need to add the text. I was wondering if something like a pseudo label (I want to keep the original axis labels) existed that could be used to anchor a text box ? Or maybe a semi-manual approach where I could offset such a pseudo-label position along the y axis? Since I know the size of my resulting jpegs, I could use a constant y offset for the text and they'd be aligned properly along the x axis because they are labels. For the mean value, I could draw a short horizontal line segment across the boxplot, but again I'd have the problem of tying that line segment to specific x-axis values so they intersect the right boxplot. Any clues ? On a related note, I've added regression lines, again by factor (thanks scatterplot!), and was asked to write the regression equation in plain text. I have between one and 7 lines on the plots, so again how could I automatically tie a text box, this time to a specific regression line ? Maybe that would be easier using a legend, but it would be nice to be able to write the equation alongside the line. TIA -- View this message in context: http://www.nabble.com/Automatic-anchors-for-text-boxes-tf4360108.html#a12426263 Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@stat.math.ethz.ch 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.
