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I'm searching but still can't find an answer to a quite simple question - how can we produce a simple dot plot of one variable with ggplot2 in R?
with plot command this is very simple:
plot(iris$Sepal.Length, type='p') But when I'm trying to pass one variable to qplot and specifying geom="point", I'm getting an error "Error in UseMethod("scale_dimension")".
How can we make a plot like this but with ggplot2?
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%>% is a pipe operator reexported from the magrittr package. Start by reading the vignette. Adding things to a ggplot changes the object that gets created. The print method of ggplot draws an appropriate plot depending upon the contents of the variable.
You can manually create an index vector with seq_along.
library(ggplot2) qplot(seq_along(iris$Sepal.Length), iris$Sepal.Length) 
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