Upcoming Feature: Impact heatmap 'Weighted Impact Score' logic
ChangePlan’s impact heatmaps currently use the Dominance Rule to determine cell colors based on the highest impact level. However, we are introducing a new alternative: Weighted Impact Score.
Published on February 28, 2025Background: Dominance Rule
- We currently calculate the color of the cells in our impact heatmaps using logic called the ‘Dominance rule' - see this support article for more details
Coming new approach: Weighted Impact Score
- We will offer ChangePlan users an alternative ‘Weighted Impact Score’ approach to calculate the coloring for the impacts heatmap
- This alternative logic will be an option that ChangePlan company admins can choose to activate in the settings area
How Weighted Impact score is calculated in four steps
For each time period, for each audience group:
- Find the total number of low, medium & high impacts that the audience group is attached to.
- Apply a ‘weighting coefficient’ to the low, medium and high impact numbers.
- Calculate the total of the weighted impact numbers.
- Determine cell coloring by comparing the number with a Color Threshold Table to ensure that the more aggregated views are not too heavily biased towards orange and red
What it will look like
In the impacts heatmap below:
- the coloring in each cell represents the weighted level of change impacts that audience group will experience a three month period.
- the number in each cell is the number of change impacts affecting that audience in each time period
Weighting low, medium & high impact scores
Admins will be able to weight low, medium and high level impacts differently so they have a different effect on the heatmap coloring. This weighting will be admin configurable in the settings page.
Default:
Magnitude | Score | ㅤ | ㅤ |
Low | 1 (fixed) | ㅤ | ㅤ |
Medium | 5 | ㅤ | ㅤ |
High | 10 | ㅤ | ㅤ |
Walkthrough of calculating the weighted impact score
The weighted impact score should be calculated for each cell in the heatmap. This should be determined by a sum of the weighted impact scores in that time period.
Step 1: Find the total number of low, medium & high impacts
We see the number of low, medium and high impacts in each group per time period:
Step 2: Apply the weighting coefficient to medium & high impacts numbers
Default coefficients are Medium: 5, High: 10.
Step 3: Calculate the total of the weighted impact numbers
The value in each cell is the sum of the weighted number of low, medium and high impacts:
Step 4: To determine the color for each cell, compare the value to the Color Threshold Table and apply the appropriate color
These are configurable by admins. Below are the default thresholds:
View | Green | Amber | Red |
Level 1 | 1 | 20 | 40 |
Level 2 | 1 | 18 | 35 |
Level 3 | 1 | 15 | 30 |
Level 4 | 1 | 13 | 25 |
Level 5 | 1 | 10 | 20 |
Level 6 | 1 | 8 | 15 |
Level 7 | 1 | 5 | 10 |
Level 8 | 1 | 5 | 10 |
Level 9 | 1 | 5 | 10 |
Level 10 | 1 | 5 | 10 |
Level 11 | 1 | 5 | 10 |
Applying these thresholds, the heatmap looks like this:
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