added HR drift, normalized power, training score

rowers/views.py

@@ -4036,6 +4036,9 @@ def cumstats(request,theuser=0,
 # Stats page
 @login_required()
 def workout_stats_view(request,id=0,message="",successmessage=""):
+
+    r = Rower.objects.get(user=request.user)
+    
     workstrokesonly = True
     if request.method == 'POST' and 'workstrokesonly' in request.POST:
         workstrokesonly = request.POST['workstrokesonly']
@@ -4093,6 +4096,56 @@ def workout_stats_view(request,id=0,message="",successmessage=""):
 
             cordict[field1] = thedict
 
+    # additional non-automated stats
+    otherstats = {}
+
+    # Normalized power & TSS
+    duration = datadf['time'].max()-datadf['time'].min()
+    duration /= 1.0e3
+    pwr4 = datadf['power']**(4)
+    normp = (pwr4.mean())**(0.25)
+    if not np.isnan(normp):
+        intensityfactor = datadf['power'].mean()/float(r.ftp)
+        intensityfactor = normp/float(r.ftp)
+        tss = 100.*((duration*normp*intensityfactor)/(3600.*r.ftp))
+
+        otherstats['np'] = {
+            'verbose_name':'rPower',
+            'value':int(10*normp)/10.,
+            'unit':'Watt'
+        }
+
+        otherstats['tss'] = {
+            'verbose_name':'rScore',
+            'value':int(tss),
+            'unit':''
+        }
+    
+    # HR Drift
+    tmax = datadf['time'].max()
+    tmin = datadf['time'].min()
+    thalf = tmin+0.5*(tmax-tmin)
+    mask1 = datadf['time'] < thalf
+    mask2 = datadf['time'] > thalf
+
+    hr1 = datadf.loc[mask1,'hr'].mean()
+    hr2 = datadf.loc[mask2,'hr'].mean()
+            
+    pwr1 = datadf.loc[mask1,'power'].mean()
+    pwr2 = datadf.loc[mask2,'power'].mean()
+
+    try:
+        hrdrift = ((pwr1/hr1)-(pwr2/hr2))/(pwr1/hr1)
+        hrdrift *= 100.
+        otherstats['hrdrift'] = {
+            'verbose_name': 'Heart Rate Drift',
+            'value': int(100*hrdrift)/100.,
+            'unit': '%',
+        }
+    except ZeroDivisionError:
+        pass
+
+
     return render(request,
 		  'workoutstats.html',
 		  {
@@ -4101,6 +4154,7 @@ def workout_stats_view(request,id=0,message="",successmessage=""):
                       'workout':row,
                       'workstrokesonly':workstrokesonly,
                       'cordict':cordict,
+                      'otherstats':otherstats,
                   })
     
 # The Advanced edit page