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Diffstat (limited to 'docs/user_guide/gaze_analysis_pipeline/aoi_analysis.md')
| -rw-r--r-- | docs/user_guide/gaze_analysis_pipeline/aoi_analysis.md | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/docs/user_guide/gaze_analysis_pipeline/aoi_analysis.md b/docs/user_guide/gaze_analysis_pipeline/aoi_analysis.md index 2b64091..c2a6ac3 100644 --- a/docs/user_guide/gaze_analysis_pipeline/aoi_analysis.md +++ b/docs/user_guide/gaze_analysis_pipeline/aoi_analysis.md @@ -100,6 +100,11 @@ The second [ArLayer](../../argaze.md/#argaze.ArFeatures.ArLayer) pipeline step a Once gaze movements are matched to AOI, they are automatically appended to the AOIScanPath if required. +!!! warning "GazeFeatures.OutsideAOI" + When a fixation is not looking at any AOI, a step associated with an AOI called [GazeFeatures.OutsideAOI](../../argaze.md/#argaze.GazeFeatures.OutsideAOI) is added. As long as fixations are not looking at any AOI, all fixations/saccades are stored in this step. In this way, further analysis are calculated considering those extra [GazeFeatures.OutsideAOI](../../argaze.md/#argaze.GazeFeatures.OutsideAOI) steps. + + This is particularly important when calculating transition matrices, because otherwise we could have arcs between two AOIs when in fact the gaze could have fixed itself outside in the meantime. + The [AOIScanPath.duration_max](../../argaze.md/#argaze.GazeFeatures.AOIScanPath.duration_max) attribute is the duration from which older AOI scan steps are removed each time new AOI scan steps are added. !!! note "Optional" |