rdataframeextractchr
Extract the Chr number from the column
I have a data frame that has a column containing the chromosome details (1 to 22). I would like to create another column with only Chr numbers
Solution
Using stringr package and regex you may achieve what you are searching for but you need to know all possibilities. Maybe if there is only underscore between what you want and annoying information, you can solve your problem using str_split and "_" as pattern parameter.
library(stringr)
df <- data.frame(chromosome = c("chr6_GL000253v2_alt", "chr6_GL000254v2_alt",
"chr6_GL000255v2_alt", "chr6_GL000256v2_alt", "chr4", "chr11",
"chr8", "chr12", "chr2", "chr12", "chr4", "chr6", "chr15", "chr4",
"chr2"))
df$chromosome_fixed=str_split(df$chromosome,"_",simplify = T)[,1]
- R Rvest for() and Error server error: (503) Service Unavailable
- Use RapidAPI's SkyScanner integration using httr
- Check if string starts with any string in list of strings
- R: Error in fBody[[i]] while running debugSource
- How do I measure distances between multiple coordinates along a stream/flowline?
- loop to select the date closest to another date, for multiple variables
- Weighted mean per group with different weights per group using dplyr
- Subset a shapefile by lat/long
- How to group aggregate data based of latitude and longitude
- R selecting all rows from a data frame that don't appear in another
- How to test whether a vector contains repetitive elements?
- Combine (rbind) data frames and create column with name of original data frames
- Add a new variable to dataframe after applying lubridate to datetime
- Extract rows for the first occurrence of a variable in a data frame
- Count number of distinct values in a vector
- Split a vector into three vectors of unequal length in R
- R How to reframe data to connect start and stop times
- Check lengths of elements in list of equal length
- Remove empty zero length rows in list with R
- How can I interleave rows from 2 data frames together?
- How to estimate an SUR model in R with factors to be projected out and clustered standard errors?
- Use wildcard in path for list.files
- Managing wrong order of strings in R and ggplot. X1, X10, X12: How can I ensure a string with number will be preented in the right numberical order?
- Rewriting colnames into dates
- How to convert data frame in R to a "character" data type?
- Dynamically perform calculation down column in R
- Issue with dplyr filter in R when attempting to filter based on probability
- Scale kable table to fit page width
- multiple times addition of two columns with dplyr
- R: Toggle <select> options, submit action and web scrape HTML from site with no <form> tag