Web2 days ago · Subset a list by dynamic lengths efficiently. My data consists of a large list of integers of various lengths and I want to subset each element to a pre-specified length. my_list <- list (c (-4L, -2L), c (4L, 6L, 9L, -4L, 10L, 2L, -3L, 8L), c (-1L, 1L), c (-4L, -5L, 5L, -2L, 4L, 10L, 7L), c (-2L, 10L, 3L, -3L, 8L, -1L, 7L, 4L, 0L, 2L)) I know ... WebThe R programming language has become the de facto programming language for data science. Its flexibility, power, sophistication, and expressiveness have made it an invaluable tool for data scientists around the world. This book is about the fundamentals of R programming. You will get started with the basics of the language, learn how to …
Subsetting in R Tutorial - DataCamp
WebThe matrix ids returned from gIntersect should correspond to the rownames in each source sp object. You should be able to just index the rownames position in order to subset the data. r <- c (1,5,3,9,10) sp.polys <- sp.polys [r,] Share Improve this answer Follow answered Apr 12, 2013 at 4:59 Jeffrey Evans 30.6k 2 46 93 Web4 Apr 2014 · I tried to subset mylist using lapply function: lapply (mylist, function (x) subset (x, colb %in% hislist)) #or lapply (mylist, function (x) x [x$colb %in% hislist,]) but these … harrison county wv indictments
How can I subset a list in r by extracting the elements that …
WebSubsetting data in R can be achieved by different ways, depending on the data you are working with. In general, you can subset: Using square brackets ( [] and [ []] operators). … Web9 May 2024 · Subset. Taking a subset of a data.list is very useful and it can easily be done in different ways using the subset function (i.e. it’s really the subset.data.list function called when: # Take the 1 to 4 values of each variable in D Dsub <-subset (D, 1: ... Web3 Nov 2024 · You can use one of the following methods to subset a data frame by a list of values in R: Method 1: Use Base R. df_new <- df[df$my_column %in% vals,] Method 2: Use … chargers packers game