## Specify additional aesthetics for points

ggplot2 implements the grammar of graphics to map attributes from a data set to plot features through aesthetics. This framework can be used to adjust the point size, color and transparency alpha of points in a scatter plot.

• Adjust the point size of a scatter plot using the size parameter
• Change the point color of a scatter plot using the color parameter
• Set a parameter alpha to change the transparency of all points
ggplot(___) +
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