src (fix): remove numpy dependency

Author: timdrysdale

pyproject.toml

@@ -4,14 +4,13 @@ build-backend = "hatchling.build"
 
 [project]
 name = "practable"
-version = "0.0.23"
+version = "0.0.24"
 authors = [
   { name="Timothy Drysdale", email="timothy.d.drysdale@gmail.com" },
 ]
 description = "Connect to remote laboratory experiments hosted on a github.com/practable service"
 readme = "README.md"
 dependencies = [
-    "numpy>=1.20",
     "platformdirs>=4.2",
     "requests>=2.32",
     "websockets>=12.0", 

src/practable/core.py

@@ -15,7 +15,6 @@
 from datetime import datetime, timedelta, timezone
 import json
 import math
-import numpy as np
 import os.path
 from platformdirs import user_config_dir
 from pathlib import Path
@@ -589,8 +588,7 @@ def collect_duration(self,
         t0 = timedelta()
 
         if self.time_format == "ms":
-            if isinstance(times, (collections.abc.Sequence,
-                                  np.ndarray)) and not isinstance(times, str):
+            if isinstance(times, collections.abc.Sequence) and not isinstance(times, str):
                 t0 = timedelta(milliseconds=times[0])
             else:
                 t0 = timedelta(milliseconds=times)
@@ -664,9 +662,7 @@ def collect_duration(self,
             t1 = timedelta()
 
             if self.time_format == "ms":
-                if isinstance(times,
-                              (collections.abc.Sequence,
-                               np.ndarray)) and not isinstance(times, str):
+                if isinstance(times,collections.abc.Sequence) and not isinstance(times, str):
                     t1 = timedelta(milliseconds=times[-1])
                 else:
                     t1 = timedelta(milliseconds=times)
@@ -728,44 +724,4 @@ def printProgressBar(iteration,
         print()
 
 
-if __name__ == "__main__":
-
-    print("""
-#Example code:
-%pip install practable    
-import matplotlib.pyplot as plt
-from practable.core import Experiment
-
-messages = []
-   
-#modify with actual group code and experiment name
-with Experiment('g-open-xxxxx','Spinner 51', exact=True) as expt:
-    
-    # Command a step of 2 radians & collect the data
-    expt.command('{"set":"mode","to":"stop"}')
-    expt.command('{"set":"mode","to":"position"}')
-    expt.command('{"set":"parameters","kp":1,"ki":0,"kd":0}')
-
-    time.sleep(0.5)
-        
-    expt.command('{"set":"position","to":2}')    
-    
-    expt.ignore(0.5)
-    messages = expt.collect(1.5)
-    
-    # Process the data
-    ts = expt.extract_series(messages, "t")
-    ds = expt.extract_series(messages, "d")
-    cs = expt.extract_series(messages, "c")
-    
-    t = np.array(ts)
-    t = t - t[0]
-    
-    # Plot the data
-    plt.figure()        
-    plt.plot(t/1e3,ds,'-b',label="position")
-    plt.plot(t/1e3,cs,':r',label="set point")
-    plt.xlabel("time(s)")
-    plt.ylabel("position(rad)")
-    plt.legend()
-""")
+