Graphing 3 Variable Scatterplot R -

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i imported data islander , trying graph 3 variables. i'm thinking of trying graph 2 numeric variables nominal category (gender). plot i'm trying therefore regular scatterplot, color-coded.

i looked @ starter tutorial on r: scatterplots, didn't see mention of 3 variable plotting.

http://www.laptopmag.com/articles/ssd-upgrade-tutorial

can me out? variables hold values pertaining number of balls bounced, minutes of physical activity per week, , gender.

picture of data:
data

since gender binary variable (usually, otherwise ternary), plot 2d scatterplot color encoding gender.

dummy data:

a = data.frame(x=runif(100), y = runif(100)+2, group = round(runif(100))+1 )

now plot y against x using a$group select color:

plot(a$y, a$x, pch = 16, col = c('cornflowerblue', 'springgreen')[a$group])

output:

example

if have missingness add third group color vector. here bunch of other solutions 2d scatter color


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