solution for installing pygame
I have two computers, the one has windows system at home, the other has ubuntu system in my office. In each computer, I have two python, the one is normal…
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2015-10-16
trunc() and floor(), round() and signif() in R
floor takes a single numeric argument x and returns a numeric vector containing the largest integers not greater than the corresponding elements of x. trunc takes a single numeric argument…
2015-07-31
Plot Histogram in R
Plot Histogram in R: Method 1: hist(vector, breaks) Take care for the parameter "breaks": according the help: breaks: a single number giving the number of cells for the histogram. Important:…
2015-07-25
matrix calculation in R and Python
Useful packages: R: library(matrixcalc) Python: numpy Matrix generation: R: matrix(1:6, 2, 3) Python: np.arange(1,7).reshape(2,3) construct a diagnal matrix: R: advanced-R diag(vector, nrow, ncol) #construct a matrix which diagonal elements is equal…
2015-05-24
How to install R-extention in RapidMiner for Ubuntu?
I found the easiest way to install R extention for Ubuntun RapidMiner -> Marketplace -> R Extention RStudio -> Tools -> Install Packages... -> Input in the field "Packages": rJava, JavaGD Or…
2015-05-12
Start with R
Useful web sites for R:
- Quick-R
- R-bloggers
- r-tutor
- Kickstarting R
- cran.r-project.org
- r books
- Andrew Field, youtube videos
- Simply Statistics
- idre stat
- programiz
- shiny
- learn graph
- library: lattice, ggvis, ggplot2
About Package
- install.packages(“ggplot2”), you can also install with RStudio menu: Tools -> Install Packages…
- library(ggplot2)
2015-05-10
Use Python to detect your computer system and name
I work on several computers, sometimes Widows, sometimes Linux, so I got a problem after I pull my project file from Git. That is the file path. To cope with…
2015-04-18