Corridors is an AI-assisted feature that identifies trends in map line response data.
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Go to Analyze > Map responses.
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Open Tools menu and select 'Corridors'.
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The map should now generate corridors based on the map responses. You can:
- select which map line responses to include
- adjust the minimum numbers of responses per corridor
- select a different color for the corridors
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Examine the corridors in closer detail by clicking the arrow next to its name. The list brings you insights into what kind of corridor this is – e.g. what is the profile of the respondents, what themes are related to this cluster. It compares the responses made by the corridor respondents with the overall dataset.
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You can save a specific corridor by clicking 'Save as new view'.
The corridor can then be found in the 'Saved views' menu.
Saving a single Corridors allows you to navigate to Charts and choose any of the questions to get charts and open comments related only to this corridor.
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You can also save all corridors in one view by clicking the 'Save view' button on the top right corner of the screen.
How 'Corridors' are generated:
Places where at least 5 drawn lines (or 1% of all lines, if more) run close together are traced into centre lines, and lines that continue straight through a crossing are joined into one corridor. Corridor A has the most lines running along it. At most 10 corridors are shown, recalculated whenever the filters change. Method: a line density raster, thinned to centre lines with the Zhang–Suen skeletonization algorithm.