h2o (version 2.8.4.4)

h2o.exec: Execute a Command on H2O

Description

Directly send over and execute an R expression in the H2O console.

Usage

h2o.exec(expr_to_execute, h2o, dest_key)

Arguments

expr_to_execute

An R expression that is supported by H2O. Currently, basic subsetting, arithmetic operations, logical filters, and simple expressions like dim are allowed.

h2o

(Optional)Point to an instance of H2O. If not given, h2o.exec will try to guess.

dest_key

(Optional)Give a destination key to the expression to be executed. If not given, h2o.exec will try to guess.

Value

• A H2OParsedData object containing the result of the expression.

Examples

library(h2o)
localH2O = h2o.init()
hex <- as.h2o(localH2O, iris)
res1 = h2o.exec(hex[,1] + hex[,2])
head(res1)
res2 = h2o.exec(hex[,1] + hex[, 2] + hex[, 3] * hex[,4] / hex[,1])
head(res2)
res3<- h2o.exec(hex$nc<- ifelse(hex[,1]<5,log(hex[,3]+1),hex[,"Petal.Width"]/hex$Sepal.Width))
head(res3)
head(hex)