FloatColumnsMathOpTransform

java.lang.Object
- org.datavec.api.transform.transform.BaseColumnsMathOpTransform
- - org.datavec.api.transform.transform.floattransform.FloatColumnsMathOpTransform

All Implemented Interfaces:

java.io.Serializable, ColumnOp, Transform
```
public class FloatColumnsMathOpTransform
extends BaseColumnsMathOpTransform
```
Add a new float column, calculated from one or more other columns. A new column (with the specified name) is added as the final column of the output. No other columns are modified.
For example, if newColumnName=="newCol", mathOp==Add, and columns=={"col1","col2"}, then the output column with name "newCol" has value col1+col2.

See Also:

To do an in-place mathematical operation of a double column and a double scalar value, Serialized Form

Field Summary
- Fields inherited from class org.datavec.api.transform.transform.BaseColumnsMathOpTransform
  columns, mathOp, newColumnName

Constructor Summary

Constructors
Constructor and Description
`FloatColumnsMathOpTransform(java.lang.String newColumnName, MathOp mathOp, java.util.List<java.lang.String> columns)`
`FloatColumnsMathOpTransform(java.lang.String newColumnName, MathOp mathOp, java.lang.String... columns)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`protected ColumnMetaData`	`derivedColumnMetaData(java.lang.String newColumnName, Schema inputSchema)`
`protected Writable`	`doOp(Writable... input)`
`java.lang.Object`	`map(java.lang.Object input)` Transform an object in to another object
`java.lang.Object`	`mapSequence(java.lang.Object sequence)` Transform a sequence
`java.lang.String`	`toString()`

Methods inherited from class org.datavec.api.transform.transform.BaseColumnsMathOpTransform
columnName, columnNames, getInputSchema, map, mapSequence, outputColumnName, outputColumnNames, setInputSchema, transform

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

FloatColumnsMathOpTransform

public FloatColumnsMathOpTransform(java.lang.String newColumnName,
                                   MathOp mathOp,
                                   java.util.List<java.lang.String> columns)

FloatColumnsMathOpTransform

public FloatColumnsMathOpTransform(java.lang.String newColumnName,
                                   MathOp mathOp,
                                   java.lang.String... columns)

Method Detail

derivedColumnMetaData

protected ColumnMetaData derivedColumnMetaData(java.lang.String newColumnName,
                                               Schema inputSchema)

Specified by:: derivedColumnMetaData in class BaseColumnsMathOpTransform

doOp
```
protected Writable doOp(Writable... input)
```
Specified by:

doOp in class BaseColumnsMathOpTransform

toString
```
public java.lang.String toString()
```
Specified by:

toString in class BaseColumnsMathOpTransform

map
```
public java.lang.Object map(java.lang.Object input)
```
Transform an object in to another object

Parameters:

input - the record to transform

Returns:

the transformed writable

mapSequence

public java.lang.Object mapSequence(java.lang.Object sequence)

Transform a sequence

Parameters:: sequence -

Class FloatColumnsMathOpTransform

Field Summary

Fields inherited from class org.datavec.api.transform.transform.BaseColumnsMathOpTransform

Constructor Summary

Method Summary

Methods inherited from class org.datavec.api.transform.transform.BaseColumnsMathOpTransform

Methods inherited from class java.lang.Object

Constructor Detail

FloatColumnsMathOpTransform

FloatColumnsMathOpTransform

Method Detail

derivedColumnMetaData

doOp

toString

map

mapSequence