18 - Use your parameters

📖 Task Introduction

We now have two Parameters, origin and dest. If you open the Parameters dropdown, you’ll see that the names for each of these became $origin and $dest respectively. The $ is added to the start of the parameter to indicate that these are variables. In this task, we’ll add these parameters into a Filter board to make use of them. This will allow our analysis and dashboard to be dynamic, enabling users to filter the data according to their needs, specifically the origin and destination airports for a particular route.

🔨 Task Instructions

1. Navigate back to your flights path by clicking its tab near the top-left corner of your screen, then scroll up in your Contour path to find the Histogram board created.
2. Right before the Histogram board, click on Insert board and choose the Filter board.
3. Click into the Select columns… field and scroll to and click on the origin column.
4. Click into the rightmost field in this row where it says "Add a parameter or a term", then select the $origin parameter from the dropdown menu.
5. Select + Add a filter.
6. Click into the Select columns… field and scroll to and click on the dest column.
7. Click into the rightmost field in this row where it says "Add a parameter or a term", then select the $dest parameter from the dropdown menu.
8. Click the Save button.

📚 Recommended Reading (~15 min read)

You've had the opportunity to see the functionality Parameters offer. Supplement your learning by jumping over the to the documentation reading more here.