Differences

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--- sift:gait_measures:gait_profile_score [2024/09/24 18:11] – wikisysop
+++ sift:gait_measures:gait_profile_score [2025/02/28 18:26] (current) – wikisysop
@@ Line 23: / Line 23: @@
 The GPS score can be computed for the left and/or the right side. It can also be computed as an overall index for both sides.
-**Please note:** Since the pelvic movement is not specific to a any side, the authors recommend only including it when computing the GPS for the left side (as a convention). This means that for the left side, a total of 9 variables are used to compute the GPS, instead of only 6 for the right side. The overall GPS for both sides would therefore include all 9 variables.
+**Please note:** Since the pelvic movement is not specific to any side, the authors recommend only including it when computing the GPS for the left side (as a convention). This means that for the left side, a total of 9 variables are used to compute the GPS, instead of only 6 for the right side. The overall GPS for both sides would therefore include all 9 variables.
 ==== Equations ====
@@ Line 58: / Line 58: @@
 === Step 3: Dialog Selections ===
-The main GPS Dialog (left) in Sift can be accessed through the Gait Measures menu {{:sift_gait_measures.png}} on the main toolbar. Users should begin by selecting which type of normal database file they will be using: Sift ND File or VND File. This file will be used as the reference signals when calculation the global variance scores (GVS).
+The main GPS Dialog (left) in Sift can be accessed through the Gait Measures menu {{:sift_gait_measures.png?20}} on the main toolbar. Users should begin by selecting which type of normal database file they will be using: Sift ND File or VND File. This file will be used as the reference signals when calculation the global variance scores (GVS).
 If using a VND file, users then should browse and selecting the normal database .vnd file that they have generated.
@@ 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.\\
-{{Sift:gait_measures:gpsDlg_siftND.png}}
+{{Sift:tutorials:siftndfileselection.png}}
 \\
@@ Line 78: / Line 78: @@
 \\
-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. 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. 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. Similar selections were made of the remainder of the required signals for the GPS definition.\\
+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.
+\\
+** 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.
+\\
-{{:GPSSelections.png?500}}\\
+{{:GPSSelections.png?700}}\\
 \\
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 === 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 ====