[chronojump] Added error of the model/raw RFD. Hardcoded at 50ms

[Xavier Padullés <xpadulles src gnome org>]

commit 2a1a556a94b01a72cdd0f73742e0effd2462d53c
Author: xpadulles <x padulles gmail com>
Date:   Thu Aug 4 19:34:30 2022 +0200

    Added error of the model/raw RFD. Hardcoded at 50ms

 r-scripts/maximumIsometricForce.R | 98 +++++++++++++++++++++++++--------------
 1 file changed, 64 insertions(+), 34 deletions(-)
---
diff --git a/r-scripts/maximumIsometricForce.R b/r-scripts/maximumIsometricForce.R
index f20ec324d..8f691e16f 100644
--- a/r-scripts/maximumIsometricForce.R
+++ b/r-scripts/maximumIsometricForce.R
@@ -626,43 +626,38 @@ drawDynamicsFromLoadCell <- function(title, exercise, datetime,
                 
             } else if(RFDoptions$type == "BEST_AVG_RFD_IN_X_MS")
             {
-               RFD = 0
-               window = RFDoptions$start / 1000 # RFDoptions$start from ms to s
-
-               #if window does not fit in graph, discard it
-               if (dynamics$time[dynamics$startSample] + window > dynamics$time[dynamics$endSample])
-                   next
-
-               if (RFDoptions$rfdFunction == "FITTED")
-               {
-               } else if(RFDoptions$rfdFunction == "RAW")
-               {
-                       for (i in dynamics$startSample:dynamics$endSample)
-                       {
-                               #stop calculating when currentSample + window is greater than endSample
-                               if (i + window > dynamics$time[dynamics$endSample])
-                                       break()
-
-                               forceTemp1 = dynamics$f.raw[i]
-                               forceTemp2 = interpolateXAtY(dynamics$f.raw, dynamics$time, dynamics$time[i] 
+ window)
-                               RFDtemp = (forceTemp2 - forceTemp1) / window
-
-                               if (RFDtemp > RFD)
-                               {
-                                       force1 = forceTemp1
-                                       force2 = forceTemp2
-                                       RFD = RFDtemp
-                                       time1 = dynamics$time[i]
-                                       time2 = interpolateXAtY(dynamics$time, dynamics$time, 
dynamics$time[i] + window)
-                               }
-                       }
-                       legendText = c(legendText, paste("RFD max avg in", RFDoptions$start, "ms = ", 
round(RFD, digits = 1), " N/s", sep = ""))
-                       legendColor = c(legendColor, "black")
-               }
-           }
+                window = RFDoptions$start / 1000
+                print("detected BEST_AVG_RFD_IN_X_MS")
+                if (RFDoptions$rfdFunction == "FITTED")
+                {
+                    print("FITTED")
+                    #In the model the max RFD is always the RFD0
+                    time1 = dynamics$time[dynamics$startSample]
+                    # print(paste("In drawDynamics time1:", time1))
+                    time2 = time1 + window
+                    force1 = 0
+                    force2 = dynamics$fmax.fitted*(1 - exp(-dynamics$k.fitted*window))
+                    RFD = force2 / window
+                    legendText = c(legendText, paste("RFD max avg in ", RFDoptions$start, "ms = ", 
round(RFD, digits = 1), " N/s", sep = ""))
+                    legendColor = c(legendColor, "blue")
+                } else if(RFDoptions$rfdFunction == "RAW")
+                {
+                    maxAvgRFD = getAvgRfdXSeconds(dynamics, window )
+                    force1 = maxAvgRFD$force1
+                    
+                    time1 = maxAvgRFD$time1
+                    time2 = maxAvgRFD$time2
+                    force1 = maxAvgRFD$force1
+                    force2 = maxAvgRFD$force2
+                    RFD = maxAvgRFD$RFD
+                    legendColor = c(legendColor, "black")
+                    legendText = c(legendText, paste("RFD max avg in  ", RFDoptions$start, "ms = ", 
round(RFD, digits = 1), " N/s", sep = ""))
+                }
+               }
 
             #The Y coordinate of the line when it crosses the Y axis
             intercept = force1 - RFD * time1
+            print(paste("Intercetp:", intercept))
             
             #The slope of the line seen in the screen(pixels units), NOT in the time-force units
             windowSlope = RFD*(plotHeight/yHeight)/(plotWidth/xWidth)
@@ -701,6 +696,12 @@ drawDynamicsFromLoadCell <- function(title, exercise, datetime,
         legendColor = c(legendColor, "grey40")
     }
     
+    force2 = dynamics$fmax.fitted*(1 - exp(-dynamics$k.fitted*window))
+    modelRFD=force2/0.05
+    rawRFD = getAvgRfdXSeconds(dynamics, 0.05 )$RFD
+    legendText = c(legendText, paste("RFD50 error = ", round((rawRFD - modelRFD)*100/rawRFD, 2), "%"))
+    legendColor = c(legendColor, "grey20")
+    
     legend(x = xmax, y = dynamics$fmax.fitted/2, legend = legendText, xjust = 1, yjust = 0.1, text.col = 
legendColor)
 
     if(op$singleOrMultiple == "FALSE")
@@ -709,6 +710,35 @@ drawDynamicsFromLoadCell <- function(title, exercise, datetime,
     }
 }
 
+getAvgRfdXSeconds <-function(dynamics, window)
+{
+    print("In getAvgRfdxSeconds")
+    RFD = 0
+    
+    #if window does not fit in graph, discard it
+    if (dynamics$time[dynamics$startSample] + window > dynamics$time[dynamics$endSample])
+        next
+    #Measure how much samples corresponds to the window
+    time = dynamics$time[dynamics$startSample:dynamics$endSample]
+    windowSamples = which.min(time - (dynamics$time[dynamics$startSample] + window))
+    for (i in dynamics$startSample:(dynamics$endSample - windowSamples))
+    {
+        forceTemp1 = dynamics$f.raw[i]
+        forceTemp2 = interpolateXAtY(dynamics$f.raw, dynamics$time, dynamics$time[i] + window)
+        RFDtemp = (forceTemp2 - forceTemp1) / window
+        
+        if (RFDtemp > RFD)
+        {
+            force1 = forceTemp1
+            force2 = forceTemp2
+            RFD = RFDtemp
+            time1 = dynamics$time[i]
+            time2 = interpolateXAtY(dynamics$time, dynamics$time, dynamics$time[i] + window)
+        }
+    }
+    return(list(RFD = RFD, time1 = time1, force1 = force1, time2 = time2, force2=force2))
+}
+
 #getDynamicsFromLoadCellFolder <- function(folderName, resultFileName, captureOptions)
 #{
 #    originalFiles = list.files(path=folderName, pattern="*")