Just KNIME It!
Prove your KNIME knowledge and practice your workflow building skills by solving our weekly challenges! Can you become one of our top Just KNIME It! KNinjas?
Challenge 1: Best Places to Live with an EV
Level: Medium
Description: You have an EV and want to live in a place that has many available charging stations, and where it is also cheap to charge your vehicle. Given a dataset on chargers around the world, you need to find out the top ten cities that have the most EV chargers. You also want to consider which of those ten cities offer, on average, the cheapest KwH rates in cost. You should be narrowing down your city of choice to five after taking into account the costs.
Objective 1 (Easy): Clean data by removing addresses without real city names and extract country out of their addresses.
Objective 2 (Easy): Count the total number of EV charging stations by city and find the top ten cities.
Objective 3 (Easy): Of the top ten cities, find out which cities have the cheapest average cost to charge per kwH and show the five cheapest cities.
Objective 4 (Medium): Create a bar chart that allows you to compare the top ten cities in terms of average cost to charge per kwH. Create a widget that lets you select the cities you want to see in this plot and control the plotting with flow variables.
Author: Thor Landstrom
Dataset: EV data in the KNIME Community Hub
Remember to upload your solution with tag JKISeason4-1 to your public space on KNIME Community Hub. To increase the visibility of your solution, also post it to this challenge thread on KNIME Forum.
We will post our solution to this challenge here next Tuesday.
Go to the KNIME ForumDescription: You have an EV and want to live in a place that has many available charging stations, and where it is also cheap to charge your vehicle. Given a dataset on chargers around the world, you need to find out the top ten cities that have the most EV chargers. You also want to consider which of those ten cities offer, on average, the cheapest KwH rates in cost. You should be narrowing down your city of choice to five after taking into account the costs.
Objective 1 (Easy): Clean data by removing addresses without real city names and extract country out of their addresses.
Objective 2 (Easy): Count the total number of EV charging stations by city and find the top ten cities.
Objective 3 (Easy): Of the top ten cities, find out which cities have the cheapest average cost to charge per kwH and show the five cheapest cities.
Objective 4 (Medium): Create a bar chart that allows you to compare the top ten cities in terms of average cost to charge per kwH. Create a widget that lets you select the cities you want to see in this plot and control the plotting with flow variables.
Author: Thor Landstrom
Dataset: EV data in the KNIME Community Hub
Remember to upload your solution with tag JKISeason4-1 to your public space on KNIME Community Hub. To increase the visibility of your solution, also post it to this challenge thread on KNIME Forum.
We will post our solution to this challenge here next Tuesday.
Enjoying our challenges?
They are a great way of preparing for our certifications.
Just KNIME It! Leaderboard
KNIME community members are working hard to solve the latest "Just KNIME It!" challenge - and some of you have solved dozens of them already! Who are the KNIME KNinjas who have completed the most challenges? Click over to the leaderboard on the KNIME Forum to find out! How many challenges have you solved?