ABOUT SCATTER PLOT
A scatter plot (also called a scatterplot, scatter graph, scatter chart, scattergram, or scatter diagram) [3] is a type of plot or mathematical diagram using Cartesian coordinates to display values for typically two variables for a set of data. If the points are color-coded, one additional variable can be displayed. The data are displayed as a collection of points, each having the value of one variable determining the position on the horizontal axis and the value of the other variable determining the position on the vertical axis.[4]
ABOUT R
R is a programming language and free software environment for statistical computing and graphics supported by the R Foundation for Statistical Computing.[6] The R language is widely used among statisticians and data miners for developing statistical software[7] and data analysis.[8] Polls, data mining surveys, and studies of scholarly literature databases show substantial increases in popularity in recent years.[9] As of January 2019, R ranks 12th in the TIOBE index, a measure of popularity of programming languages.[10] A GNU package,[11] source code for the R software environment is written primarily in C, Fortran and R itself,[12] and is freely available under the GNU General Public License. Pre-compiled binary versions are provided for various operating systems. Although R has a command line interface, there are several graphical user interfaces, such as RStudio, an integrated development environment.[13][14]
TYPICAL SHELL SESSION RELATED
[code lang=”r”]
> plot(1,2,3)
Error in plot.xy(xy, type, …) : invalid plot type
> plot(12,45,55,67))
Error: unexpected ‘)’ in "plot(12,45,55,67))"
> plot(12,45,55,67)
Error in plot.window(…) : invalid ‘xlim’ value
> plot(12)
> png(file="basic.png")
> plot(12)
> dev.off()
null device
1
> plot(12,32)
> plot(12,55,99)
Error in plot.xy(xy, type, …) : invalid plot type
> plot(12,b,55)
Error in xy.coords(x, y, xlabel, ylabel, log) : object ‘b’ not found
>
[/code]
LINKS
http://www.mathsisfun.com/data/scatter-xy-plots.html
http://www.biomedware.com/files/documentation/spacestat/Statistics/Regression/Regression_line.htm
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https://en.wikipedia.org/wiki/Scatter_plot
https://en.wikipedia.org/wiki/R_(programming_language)