replace NA with values from other columns

slf2$Year[is.na(slf2$Year)] <- slf2$Ano[is.na(slf2$Year)]

data <- data.frame('a' = c('A','B','C','D','E'),
 'x' = c(1,2,NA,NA,NA),
 'y' = c(NA,NA,3,NA,NA),
 'z' = c(NA,NA,NA,4,5))

cbind(data[1], mycol = na.omit(unlist(data[-1])))

 

https://stackoverflow.com/questions/14563531/combine-column-to-remove-nas

set working directory R notebook, markdown

```{r "setup", include=FALSE}
library(knitr)
opts_knit$set(root.dir = "~/mydir")
```

https://philmikejones.wordpress.com/2015/05/20/set-root-directory-knitr/

R Markdown Resources

cheatsheets here https://www.rstudio.com/resources/cheatsheets/

online tutorial

http://rmarkdown.rstudio.com/lesson-1.html

chapter in r for data science

http://r4ds.had.co.nz/r-markdown.html

 

save the first (or any) element of a string split

dirs<-matrix(ncol = 2,data=unlist(strsplit(out$`Full Name`,split=",")),byrow = TRUE)[,1]

Replace . in string in R

gsub(x = ff,pattern = "[.]",replacement="")

dplyr column names with spaces, how to index

backtick it!

`my name`

https://stackoverflow.com/questions/22842232/dplyr-select-column-names-containing-white-space

All Pairwise Combinations of Rownames from a Square Matrix

combn(rownames(my.square.matrix), m=2, FUN=paste, collapse = "-", simplify = T)

read file from parent folder of current working directory

If  your working directory is C:Parent/Child

Then to read a file from Parent use ..

file="../MY_FILE.RData"

https://stackoverflow.com/questions/24319168/how-to-move-backward-parent-folder

Make ggplot look like base plot in R

myplot + theme_bw() + theme(panel.border = element_blank(), panel.grid.major = element_blank(), panel.grid.minor = element_blank(), axis.line = element_line(colour = "black"))

myplot + theme_bw() + theme(panel.grid.major = element_blank(), panel.grid.minor = element_blank(), axis.line = element_line(colour = "black"))

here

 

 

 

Automatic MIT License for R Packages

devtools::use_mit_license()