Icon

04 Numbers Strings and Rules

04 Numbers Strings and Rules
Exercise: Numbers, Strings, and Rules1.1) Read the travel advisories data by executing the CSV Reader node below1.2) Replace the colons in the Level column by hyphen, like this: "Level 1- Exercise normalprecautions"1.3) Extract the risk levels as numbers into a separate column. You can use, for example, thesubstr() function.1.4) Complete the tasks above with the Column Expressions node2.1) Read the population data by executing the Excel Reader node below2.2) Create a new column "Change" by substracting the population values in 2018 from thepopulation values in 20192.3) Convert the absolute population change values into percentages: divide them by thepopulation values in 2018 and multiply the result by 100.2.4) Create a categorical column with two values "increasing"/"decreasing" based on whether thechange is positive or negative demographics.xlsx(population)travel_advidories.csv Excel Reader CSV Reader Exercise: Numbers, Strings, and Rules1.1) Read the travel advisories data by executing the CSV Reader node below1.2) Replace the colons in the Level column by hyphen, like this: "Level 1- Exercise normalprecautions"1.3) Extract the risk levels as numbers into a separate column. You can use, for example, thesubstr() function.1.4) Complete the tasks above with the Column Expressions node2.1) Read the population data by executing the Excel Reader node below2.2) Create a new column "Change" by substracting the population values in 2018 from thepopulation values in 20192.3) Convert the absolute population change values into percentages: divide them by thepopulation values in 2018 and multiply the result by 100.2.4) Create a categorical column with two values "increasing"/"decreasing" based on whether thechange is positive or negative demographics.xlsx(population)travel_advidories.csv Excel Reader CSV Reader

Nodes

Extensions

Links

Download

To use this workflow in KNIME, download it from the below URL and open it in KNIME:

Download Workflow
Created by: Maarit Laukkanen
Created at: 2020-10-09
On NodePit since: 2021-09-21
Last update: 2024-11-21
Created with KNIME version: v4.4.0
Tags: data manipulationtransformationrule enginemath formulastring manipulationcolumn expressions

Deploy, schedule, execute, and monitor your KNIME workflows locally, in the cloud or on-premises – with our brand new NodePit Runner.

Try NodePit Runner!