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R Programming Class

More means using R :)

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September 05, 2023

 x <-c(1,3,5,6)
> x
[1] 1 3 5 6
> mean(x)
[1] 3.75

>

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Visualization in R

November 12, 2023

Basic Graph Romar Wallen For my module 8 visualization I chose the Dow Jones stock market file since I have very little knowledge of it and I'd like to see what the value are and how the values are affected by time. I used this command, DJFranses <- DJFranses[, -1], to remove the first and additional column. This will remove a third element that can issues when running the command for the 2-D graph. running the code below creates a basic visualization of the DJFranses stock market over the 15 year period. plot (DJFranses$time, DJFranses$value, cex = 3, pch = 20, main = "Dow index time series data", xlab="Time", ylab = "Stock Value") Lattice after loading the library(lattice) into the interface I was able to pl...

5 Doing Math

September 23, 2023

A <- matrix(1:100, nrow=10) > B <- matrix(1:1000, nrow=10) > det(A) [1] 0 > det(B) Error in determinant.matrix(x, logarithm = TRUE, ...) : 'x' must be a square matrix Since the matrix has 1000 values with only 10 rows, that means there’s 100 columns. This forms a non-square matrix, which does not have a determinant. Because of this, there is no inverse for matrix B.

River Nile Func & basic graphs

September 06, 2023

Visualization in R Basic Graphs Covid-19 Histograms Apparently the R Libraries has a River Nile function that produces a graph, how ironic? > print(hn) $breaks [1] 400 500 600 700 800 900 1000 1100 1200 1300 1400 $counts [1] 1 0 5 20 25 19 12 11 6 1 $density [1] 0.0001 0.0000 0.0005 0.0020 0.0025 0.0019 0.0012 0.0011 0.0006 0.0001 $mids [1] 450 550 650 750 850 950 1050 1150 1250 1350 $xname [1] "Nile" $equidist [1] TRUE attr(,"class") [1] "histogram" Plots . > Infected <- c(1, 3, 6, 4, 9) > Deaths <- c(2, 5, 4, 5, 12) > > # Graph cars using a y axis that ranges from 0 to 12 > plot(Infected, type="o", col="blue", ylim=c(0,12)) > lines(Deaths, type="o", pch=20, lty=4, col="red") > title(main="Covid-19-2023", col.main="C", font.main=6) > title(main="Covid-19-2023", col.main="Pink", font.main=6) > title(main="...