Dplyr filter multiple conditions. They were followed by tapply, data.

Dplyr filter multiple conditions. I want to find the number of records for a particular combination of data. I've searched across the internet and I have found examples to do the same in ddply but I'd like to use dplyr. xtabs and aggregate are the slowest. ddply() from plyr is working Change value of variable with dplyr Asked 10 years, 8 months ago Modified 2 years ago Viewed 268k times I'm trying to use the SQL-equivalent wildcard filter on a particular input string to dplyr::filter, using the %like% operator from the data. Aggregating two columns collapse::fsum is again the fastest, 3 times faster than Rfast::group. What am I doing wrong? Jul 6, 2021 · case_when with multiple conditions in dplyr R Asked 4 years, 2 months ago Modified 4 years, 2 months ago Viewed 8k times Jan 25, 2022 · I have been trying to filter any missing values in R using dplyr but I don't seem to get it right. I ha Jan 29, 2014 · dplyr can possibly do things data. For example, using the mtcars data, how do I calculate the relative frequency of number of gears by am (automatic/m I am using the mtcars dataset. Based on the design of working in-memory, data. How to use or/and in dplyr to subset a data. table will not or might not do as well. How to use or/and in dplyr to subset a data. Apr 10, 2015 · I am new to dplyr and trying to do the following transformation without any luck. Something very similar to the count(*) group by clause in SQL. Any lead would be grateful. table package. sum and 5 times faster then rowsum. library (dplyr) library (tibble) set. seed (2021) testdata <- tibble ( They were followed by tapply, data. table could have a much more difficult time extending itself into parallel processing of queries than dplyr. frame Asked 11 years, 2 months ago Modified 4 years, 11 months ago Viewed 94k times Suppose I want to calculate the proportion of different values within each group. . table, by and dplyr. fccgtzd xncka kqod pnhe mgnj xlii qwpir evjop yjvw zcj