R help - Jul 2009 - param:qsec in ggplot2

Hii

  i have been trying to do a scatter plot with ggplot2, like the plot 6 here
(http://had.co.nz/ggplot2/geom_point.html) .. where the points size vary
with values
> p + geom_point(aes <http://had.co.nz/ggplot2/aes.html>(size = qsec))

  but am not sure how to setup the parameter - qsec

  could anyone please give some pointers on how to define that

thanks
Mo.

	[[alternative HTML version deleted]]

Dear Mo

You only need to use the name of a variable in your dataframe. The
example below lets the size of the points depend on the variable carat.

library(ggplot2)
ggplot(diamonds, aes(x = table, y = price, size = carat)) + geom_point()

HTH,

Thierry

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ir. Thierry Onkelinx
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tel. + 32 54/436 185
Thierry.Onkelinx at inbo.be
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-----Oorspronkelijk bericht-----
Van: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
Namens Mohan S
Verzonden: donderdag 23 juli 2009 6:14
Aan: r-help at r-project.org
Onderwerp: [R] param:qsec in ggplot2

Hii

  i have been trying to do a scatter plot with ggplot2, like the plot 6
here
(http://had.co.nz/ggplot2/geom_point.html) .. where the points size vary
with values
> p + geom_point(aes <http://had.co.nz/ggplot2/aes.html>(size = qsec))

  but am not sure how to setup the parameter - qsec

  could anyone please give some pointers on how to define that

thanks
Mo.

	[[alternative HTML version deleted]]

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Hi, 

qseq is a variable from the data.frame mtcars, 
that has been used to create the initial plot p. 

library(ggplot2)
p <- ggplot(mtcars, aes(wt, mpg))
p + geom_point(aes(size = qsec)

Just replace qseq by your variable of interest. 

Regards, 

Matthieu