Some more bed data science

bettwaage-plotter/main.py

@@ -2,19 +2,27 @@ import requests
 import matplotlib.pyplot as plt
 from datetime import datetime
 import json
+import os
 
+latest_history_path = "latest_history.json"
 
-file_path = None
+file_path = latest_history_path
 history_url = "http://192.168.178.84:9587/bettwaage/history"
 
+focus_on_latest_bed_data = False
+
 convert_time_to_seconds = True
 
 # Get data
 data = None
-if file_path is None:
+if file_path is None or not os.path.exists(file_path):
     print("Fetching data ...")
     data = requests.get(history_url)
     data = data.json()
+
+    print("Saving latest data ...")
+    with open(latest_history_path, "w", encoding="UTF-8") as fp:
+        json.dump(data, fp)
 else:
     print("Reading data ...")
     with open(file_path, "r") as fp:
@@ -34,8 +42,10 @@ for d in data:
             "bl": d["bl"],
             "br": d["br"],
         }
+        total_bed_only_weight = sum(bed_only_weight.values())
         break
 
+if focus_on_latest_bed_data:
     # Collect all coherent sequences of someone being in bed
     in_bed_datas: list[list[dict]] = []
     is_in_bed_sequence = False
@@ -59,11 +69,11 @@ for sequence in in_bed_datas:
 
 # Prepare data for plotting
 x = [d["timestamp"] for d in data]
-x = [datetime.strptime(d, "%Y-%m-%d %H:%M:%S.%f") for d in x]
+# x = [datetime.strptime(d, "%Y-%m-%d %H:%M:%S.%f") for d in x]
 
-if convert_time_to_seconds:
-    max_time = max(x)
-    x = [(d - max_time).total_seconds() for d in x]
+# if convert_time_to_seconds:
+#     max_time = max(x)
+#     x = [(d - max_time).total_seconds() for d in x]
 
 total = [d["total"] for d in data]
 tl = [d["tl"] for d in data]
@@ -76,6 +86,18 @@ left = [t + b for t, b in zip(tl, bl)]
 right = [t + b for t, b in zip(tr, br)]
 
 
+fig, ax = plt.subplots()
+
+person_weight = [t - total_bed_only_weight for t in total]
+
+ax.set_xlabel("Time (s)")
+ax.set_ylabel("Weight (kg)")
+
+ax.plot(x, person_weight, color="tab:blue")
+
+plt.show()
+exit()
+
 # Experiment: Calculate position over time
 bed_size = (140, 200)
 left_bed_only = bed_only_weight["tl"] + bed_only_weight["bl"]
@@ -93,7 +115,6 @@ for t, b, l, r in zip(top, bottom, left, right):
         )
     )
 
-
 # Plot data
 fig, (ax0, ax1) = plt.subplots(nrows=2)
 
@@ -112,7 +133,6 @@ ax0.legend(
     ["Total", "Top Left", "Top Right", "Bottom Left", "Bottom Right", "Top", "Bottom"]
 )
 
-
 # Experiment: Plot position
 import math
 import colorsys

bettwaage-plotter/requirements.txt

@@ -1,3 +1,4 @@
 matplotlib
 requests
 numpy
+PyQt5