Create tree from levels 

and so on based on being supplied just the level number. This presupposes that the level number only ever increments one at a time, although it may drop by […]

Multiple flag columns 

Some ways to generate "flag" columns based on a rule

Replacement of missing values by type 

Adding missing values based on previous row value 

using lag column to populate missing values from previous value and including calculation

Identifying non-numeric strings using a Multi Column Rule Engine 

@takbb Brian Bates 2 April 2024

Tabulating rows into columns with lag calculation 

Example of using pivoting node to turn row-based data into tabulated column data

Filter data for column and replace blanks 

Regex Multi Row Splitter 

The Row Filters. implement. cascade-filtering OFF mode.

Parent-Child Hierarchy with recursive loop - V2 

<p>For a list of parents and children in a hierarchy, this uses a recursive loop to find all the top level parents and their descendants (children, […]

14주차_​실습과제_​정답 

[예제 2.1] (2.2 데이터 점검). 1. data 폴더에 저장된 ch02_data.xlsx 파일의 'Gig' 시트 데이터를 읽음 (Excel Reader 노드 이용). 2. 4개의 필드를 탐색하라. Hourly Wage, Industry, Job 필드의 결측치는 몇 개인가? […]