Datu analīze Power BIar R valodu

Aldis Ērglis

Riga Power BI #15

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R valodas popularitāte

Kas ir R valoda• Valoda statistikas aprēķiniem• Radīta 1993. gadā• Ross Ihaka, Robert Gentleman• Jaudīgs vizuālizācijas instruments

x <- c(1,2,3,4,5,6) # Create ordered collection (vector)y <- x^2 # Square the elements of xprint(y) # print (vector) y[1] 1 4 9 16 25 36

mean(y) # Calculate average (arithmetic mean) of (vector) y; result is scalar[1] 15.16667

Mandelbrot setShort R code calculating Mandelbrot set through the first 20 iterations of equation z = z2 + c plotted for different complex constants c. This example demonstrates:

R Studio https://www.rstudio.com

800 datu pakaslibrary(corrplot)M <- cor(mtcars)corrplot(M, method="circle")

R galvenie uzdevumi• Datu sagatavošana un tīrīšana• Klasifikācijas• Lineārās regresijas modeļi• Prognozēšana• Klāsteri• Lēmumu koki• Neirona tīkli

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