[R] labelling plots with ancillary data in data.frame

Paul Hiemstra p.hiemstra at geo.uu.nl
Tue Aug 14 17:52:03 CEST 2007

Hi Wesley,

Try the text() function. An example:

a = rep(10,10)
b = seq(1,10)
text(a,b, labels = b, pos = 4, offset = 0.7)



Wesley Roberts schreef:
> Hi All,
> I am busy using R to do some regression modelling and have been using plot(x,y,"") to visualise my variables. I would now like to label my points using data stored in the data.frame used for the regression analysis. For example each of my data points is made up of a field measured forest volume value and a remotely sensed vegetation estimate (NDVI). Each point is an enumeration plot and I would like to label each the points in the xy-scatterplot with their respective plot numbers. Is this possible in R, if so how do I go about doing it?
> Many thanks for your help
> Wesley
> Wesley Roberts MSc.
> Researcher: Forest Assessment (Remote Sensing & GIS)
> Forestry and Forest Products Research Centre
> Tel: +27 (31) 242-2353
> Fax: +27 (31) 261-1216
> http://ffp.csir.co.za/
> "To know the road ahead, ask those coming back."
> - Chinese proverb

Drs. Paul Hiemstra
Department of Physical Geography
Faculty of Geosciences
University of Utrecht
Heidelberglaan 2
P.O. Box 80.115
3508 TC Utrecht
Phone: 	+31302535773
Fax:	+31302531145

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