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  1. Rasgo Graveyard
  2. All Transforms

Replace String

Returns the subject with the specified pattern (or all occurrences of the pattern) either removed or replaced by a replacement string. If no matches are found, returns the original subject.

Parameters

Name
Type
Description
Is Optional

source_col

column

A string column from which to replace a pattern.

pattern

string

This is the regex pattern that you want to match.

replacement

string

This is the value used as a replacement for the pattern.

alias

string

A column name to assign the resulting column.

True

use_regex

boolean

Use regex to find string pattern to replace defaults to 'false'; however, regex will be used if any of 'position', 'occurrence', or 'parameters' are provided, regardless of this value.

True

position

int

Number of characters from the beginning of the string where the function starts searching for matches. Default: 1

True

occurrence

int

Specifies which occurrence of the pattern to replace. If 0 is specified, all occurrences are replaced. Default: 0

True

parameters

string

String of one or more characters that specifies the parameters used for searching for matches. Supported values: c , i , m , e , s. Default: c

True

Example

ds = rasgo.get.dataset(id)

ds2 = ds.replace_string(source_col='WEATHER_DESCRIPTION', pattern='[Dd]rizzle|[Ss]prinkle', replacement='rain')
ds2.preview()

Source Code

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Last updated 2 years ago

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