Created
March 22, 2016 08:26
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short speed test data.frame vs. data.table
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| library(data.table) | |
| dt <- data.table(a = c(1:10000), b = rep(c("a","b","c"), length = 10000)) | |
| df <- data.frame(a = c(1:10000), b = rep(c("a","b","c"), length = 10000)) | |
| microbenchmark::microbenchmark(dt[dt$b == "b",], times = 1000, unit = "us") | |
| microbenchmark::microbenchmark(df[df$b == "b",], times = 1000, unit = "us") | |
| microbenchmark::microbenchmark(dt$a[dt$b == "b"], times = 1000, unit = "us") | |
| microbenchmark::microbenchmark(df$a[df$b == "b"], times = 1000, unit = "us") |
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