water.rapids

Class ASTddply

java.lang.Object

water.Iced

water.rapids.AST

water.rapids.ASTOp

water.rapids.ASTddply

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, java.lang.Cloneable, Freezable

public class ASTddply
extends ASTOp

plyr's ddply: GroupBy by any other name. Sample AST: (h2o.ddply $frame {1;5;10} $fun) First arg is the frame we'll be working over. Second arg is column selection to group by. Third arg is the function to apply to each group.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ASTddply.Group

Field Summary

Fields inherited from class water.rapids.ASTOp

BIN_INFIX_OPS, PREFIX_OPS, SYMBOLS, UDF_OPS, UNI_INFIX_OPS

Constructor Summary

Constructors

Constructor and Description
ASTddply()

Method Summary

Methods inherited from class water.rapids.ASTOp

get, isBuiltinOp, isInfixOp, isOp, isUDF, isUDF, kfoldColumn, moduloKfoldColumn, opStrs, stratifiedKFoldColumn

Methods inherited from class water.rapids.AST

indent, numChildren

Methods inherited from class water.Iced

clone, frozenType, read_impl, read, readExternal, readJSON_impl, readJSON, toJsonString, write_impl, write, writeExternal, writeJSON_impl, writeJSON

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ASTddply

public ASTddply()