Convert column/columns in the current frame to categoricals.
as.factor(x)
x | a column from an H2OFrame data set. |
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# NOT RUN { library(h2o) h2o.init() # Single column cars <- "https://s3.amazonaws.com/h2o-public-test-data/smalldata/junit/cars_20mpg.csv" df <- h2o.importFile(cars) df["cylinders"] <- as.factor(df["cylinders"]) h2o.describe(df["cylinders"]) # Multiple columns cars <- "https://s3.amazonaws.com/h2o-public-test-data/smalldata/junit/cars_20mpg.csv" df <- h2o.importFile(cars) df[c("cylinders","economy_20mpg")] <- as.factor(df[c("cylinders","economy_20mpg")]) h2o.describe(df[c("cylinders","economy_20mpg")]) # }