HAS-Motion Software Documentation

User Tools

Site Tools

You are here: Main Page » sift » Gait Measures » Gait Profile Score
sift:gait_measures:gait_profile_score

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
sift:gait_measures:gait_profile_score [2024/11/04 18:53] – wikisysopsift:gait_measures:gait_profile_score [2025/02/28 18:26] (current) – wikisysop
Line 68: Line 68:
 If using a Sift ND File, the user must select the loaded ND file from the drop down. **NOTE:** The Sift ND File MUST be loaded into Sift before using it for the GPS. See [[sift:build_nds:building_normal_databases|here]] for loading a Sift ND.\\ If using a Sift ND File, the user must select the loaded ND file from the drop down. **NOTE:** The Sift ND File MUST be loaded into Sift before using it for the GPS. See [[sift:build_nds:building_normal_databases|here]] for loading a Sift ND.\\
  
-{{Sift:gait_measures:gpsDlg_siftND.png}}+{{Sift:tutorials:siftndfileselection.png}}
 \\ \\
  
Line 80: Line 80:
 We then select the signal selection button to prompt a second dialog to the GPS (center). It is crucial that the user make careful selections in this dialog to ensure the correct signals are being compared. Here, users will select the signal from a list of all signals in the type and folder selected in the first dialog. Each combo box is populated with data from either the CMZ library that is loaded, or the ND file.  We then select the signal selection button to prompt a second dialog to the GPS (center). It is crucial that the user make careful selections in this dialog to ensure the correct signals are being compared. Here, users will select the signal from a list of all signals in the type and folder selected in the first dialog. Each combo box is populated with data from either the CMZ library that is loaded, or the ND file. 
 \\ \\
 +
 **Pelvic Signals** - The first three combo boxes under "Signals" are for the selection of the Pelvic angles. Here, we provide users with a list of all signals from the underlying CMZ workspaces and corresponding folders selected in the first dialog. Here we have chosen the "L_Pelvic_Angle" (left and right for this database example are actually the exact same signal), with components X, Y, and Z for the pelvic tilt, obliquity, and rotation angles. Sift will normalize this pelvic signal to left events for the left side GPS, and right events for the right side GPS. We then selected the left and right pelvis X, Y, and Z angles from the list of signals that Sift identified in the VND or Sift ND normal database. Here, the normal database has computed a L_Pelvic_Angle and R_Pelvic_Angle. Note that the Normal Database signals are assumed to be already normalized to gait events, and then averaged. So in this case, L_Pelvic_Angle was normalized to left side events, and R_Pelvic_Angle was normalized to right side events prior to loading in this Normal database file.  **Pelvic Signals** - The first three combo boxes under "Signals" are for the selection of the Pelvic angles. Here, we provide users with a list of all signals from the underlying CMZ workspaces and corresponding folders selected in the first dialog. Here we have chosen the "L_Pelvic_Angle" (left and right for this database example are actually the exact same signal), with components X, Y, and Z for the pelvic tilt, obliquity, and rotation angles. Sift will normalize this pelvic signal to left events for the left side GPS, and right events for the right side GPS. We then selected the left and right pelvis X, Y, and Z angles from the list of signals that Sift identified in the VND or Sift ND normal database. Here, the normal database has computed a L_Pelvic_Angle and R_Pelvic_Angle. Note that the Normal Database signals are assumed to be already normalized to gait events, and then averaged. So in this case, L_Pelvic_Angle was normalized to left side events, and R_Pelvic_Angle was normalized to right side events prior to loading in this Normal database file. 
 \\ \\
 +
 ** General Signals** - The rest of the "Signals" options are populated with signals that Sift has found a left and right match for in the CMZ workspaces, and gives you the "general" names. For example, Sift may find a L_Hip_Angle and R_Hip_Angle in each workspace, and the user would select "Hip_Angle" as the general option. Sift only provides users with signals where both L and R are found. Sift does not look specifically for matches in the ND files, because again, it is assumed that these signals have already been normalized to left and right gait events. Make sure you select the correct L and R signals for each entry of the dialog.  ** General Signals** - The rest of the "Signals" options are populated with signals that Sift has found a left and right match for in the CMZ workspaces, and gives you the "general" names. For example, Sift may find a L_Hip_Angle and R_Hip_Angle in each workspace, and the user would select "Hip_Angle" as the general option. Sift only provides users with signals where both L and R are found. Sift does not look specifically for matches in the ND files, because again, it is assumed that these signals have already been normalized to left and right gait events. Make sure you select the correct L and R signals for each entry of the dialog. 
 \\ \\
Line 95: Line 97:
 === Step 4: Calculate and View Results === === Step 4: Calculate and View Results ===
  
-GPS calculations are saved as metrics in the CMZ workspaces loaded in Sift. When queried into the explore page, users may plot them as Metric or Metric-Metric plots. Here, we can see the total GPS scores generated for selected workspaces plotted as a metric bar chart. To demonstrate another method of visualizing these metric values, we have generated a stacked bar chart for 3 CMZ workspaces, using the mean metric value of all individual components to compare how much contribution they have to the total GPS score.+GPS calculations are saved as metrics in the CMZ workspaces loaded in Sift. When queried into the explore page, users may plot them as Metric or Metric-Metric plots. Here, we can see the total GPS scores generated for selected workspaces plotted as a metric bar chart. We can also look at right and left specific GPS scores from the conditions of group GPS_1. 
  
-{{:GPSMean.png}} {{:GPS_individual.png}}+{{sift:gait_measures:GPSResults.png?1000}} {{sift:gait_measures:LeftvsRightGPS.png?1000}}
  
 ==== References ==== ==== References ====
sift/gait_measures/gait_profile_score.1730746380.txt.gz · Last modified: 2024/11/04 18:53 by wikisysop