add heater level

app.py

@@ -6,9 +6,9 @@ import numpy as np
 import time
 import datetime
 try:
-  from nicegui import app, ui, events, Client
+  from nicegui import app, ui, events, Client, run
 except ModuleNotFoundError as e:
-  print('Module `nicegui` not found.')
+  print(f'Error: {e}')
   exit(1)
 try:
   import plotly.graph_objects as pgo
@@ -16,8 +16,9 @@ try:
   import plotly as ply
   import plotly.subplots
   import local_file_picker
+  import plotly_resampler as prs
 except ModuleNotFoundError as e:
-  print('Module `plotly` not found.')
+  print(f'Error: {e}')
   exit(1)
 
 pio.templates["plotly_light"] = pgo.layout.Template(
@@ -30,7 +31,8 @@ pio.templates["plotly_light"].layout['yaxis']['zerolinecolor'] = 'lightgray'
   
 ELM = {
   'name': 'tempplot',
-  'filename': './data/20260420213656.txt',
+  'filedir': './data',
+  'filename': None,
   'label_file_fmt': 'File: {filename}',
   'label_data_len_fmt': 'Data points: {num:,} (rendered) / {numa:,} (total)',
   'label_data_temp_fmt': 'Temperature = [{min:.1f}, {max:.1f}] K',
@@ -38,7 +40,7 @@ ELM = {
   'plotly_light': 'plotly_light',
   'plotly_dark': 'plotly_dark',
   'update_last': time.time(),
-  'update_timeout': 1,
+  'update_timeout': 1.0,
   'label_update_last_fmt': 'Last refresh: {last}',
 }
 
@@ -54,6 +56,8 @@ def main_cli():
     '--host', type=str, default='', help='default 127.0.0.1')
   parser.add_argument(
     '--port', type=str, default='8085', help='default 8080')
+  parser.add_argument(
+    '--dir', type=str, default='./data', help='default ./data')
   parser.add_argument(
     '-v', '--verbose', action='store_true', help='Verbose output')
   parser.add_argument(
@@ -83,18 +87,55 @@ def np2pgo(x, y, label=None):
     res.update({'name': label})
   return res
 
+def fntl():
+  if ELM['filename'] is not None:
+    return os.path.relpath(ELM['filename'], ELM['filedir'])
+
+def fnttt():
+  res = None
+  if ELM['filename'] is not None:
+    fn = os.path.basename(ELM['filename'])
+    n = len(fn)
+    if n == 18:
+      res = f'{fn[:4]}-{fn[4:6]}-{fn[6:8]} {fn[8:10]}:{fn[10:12]}:{fn[12:14]}'
+  return res
+
+def islandinfo(y, trigger_val, stopind_inclusive=True):
+  """
+  >>> y
+  >>> array([1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1])
+  >>> islandinfo(y, trigger_val=1)[0]
+  >>> [(0, 2), (8, 9), (16, 19)]
+  >>> islandinfo(y, trigger_val=0)[0]
+  >>> [(3, 7), (10, 15)]
+  """
+  # Setup "sentients" on either sides to make sure we have setup
+  # "ramps" to catch the start and stop for the edge islands
+  # (left-most and right-most islands) respectively
+  y_ext = np.r_[False,y==trigger_val, False]
+
+  # Get indices of shifts, which represent the start and stop indices
+  idx = np.flatnonzero(y_ext[:-1] != y_ext[1:])
+
+  # Lengths of islands if needed
+  lens = idx[1::2] - idx[:-1:2]
+
+  # Using a stepsize of 2 would get us start and stop indices for each island
+  return list(zip(idx[:-1:2], idx[1::2]-int(stopind_inclusive))), lens
+
 async def pick_file() -> None:
-  result = await local_file_picker.local_file_picker('./data', multiple=False)
+  result = await local_file_picker.local_file_picker(ELM['filedir'], multiple=False)
   # ui.notify(f'You chose {result}')
   if result:
     filename = result[-1]
     ELM['filename'] = filename
     # see timer below, but still here active b/c the time might be inactive
     ui.timer(0, lambda: update_data(), once=True)
-    ELM['label_file'].set_text(ELM['label_file_fmt'].format(filename=os.path.basename(filename)))
 
 def get_data(filename=ELM['filename']):
-  data = np.genfromtxt(fname=filename, skip_header=1)
+  data = None
+  if filename is not None and os.path.isfile(filename):
+    data = np.genfromtxt(fname=filename, skip_header=1, max_rows=2)
 
     if len(data) > 0 and len(data[0]) > 6:
       names = ['time', 'ts', 'ta', 'tb', 'tc', 'td', 'hp', 'hl']
@@ -108,20 +149,25 @@ def get_data(filename=ELM['filename']):
     )
   return data
 
-def update_data():
-  if not app.storage.user['timer'] or time.time() - ELM['update_last'] > ELM['update_timeout']:
+async def update_data():
+  out = ''
+  if not app.storage.user['timer'] \
+     or time.time() - ELM['update_last'] > ELM['update_timeout']:
     ELM['update_busy'] = True
     filename=ELM['filename']
-    data_all = get_data(filename)
+    t1 = time.time()
+    data_all = await run.cpu_bound(get_data, filename)
+    t2 = time.time()
     data = data_all
 
+    if data is not None:
       # time_range = ELM['number_time_range'].value
       time_range = app.storage.user['time_range']
       if time_range is not None and time_range > 0:
         # delta = datetime.datetime.now() - data['time']
         delta = data['time'][-1] - data['time']
         data = data[np.where(delta <= datetime.timedelta(hours=time_range))]
-    print(datetime.datetime.now(), filename, data_all.shape, data.shape)
+      out += f"{datetime.datetime.now()}, {filename}, {data_all.shape}, {data.shape}"
       ELM['label_data_len'].set_text(ELM['label_data_len_fmt'].format(
         num=len(data), numa=len(data_all)))
 
@@ -138,25 +184,63 @@ def update_data():
         min=np.min(data['hp']), max=np.max(data['hp'])))
 
       ELM['fig'].data = []
+      ELM['fig'].layout.shapes = []
       ELM['plot'].visible = False
       ELM['plot'].update()
 
       # mode='lines+markers' too heavy
       ELM['fig'].add_trace(pgo.Scatter(
-      **np2pgo(data['time'], data['ts'], 'Setp'), mode='lines', legendgroup=None))
+        **np2pgo(data['time'], data['ts'], 'Setp'), mode='lines', yaxis="y", legendgroup=None), secondary_y=False)
       ELM['fig'].add_trace(pgo.Scatter(
-      **np2pgo(data['time'], data['ta'], 'Temp A'), mode='lines', legendgroup=None))
+        **np2pgo(data['time'], data['ta'], 'Temp A'), mode='lines', yaxis="y", legendgroup=None), secondary_y=False)
       ELM['fig'].add_trace(pgo.Scatter(
-      **np2pgo(data['time'], data['tb'], 'Temp B'), mode='lines', legendgroup=None))
+        **np2pgo(data['time'], data['tb'], 'Temp B'), mode='lines', yaxis="y", legendgroup=None), secondary_y=False)
       if len(data) > 0 and len(data[0]) > 6:
         ELM['fig'].add_trace(pgo.Scatter(
-        **np2pgo(data['time'], data['tc'], 'Temp C'), mode='lines', legendgroup=None))
+          **np2pgo(data['time'], data['tc'], 'Temp C'), mode='lines', yaxis="y", legendgroup=None), secondary_y=False)
         ELM['fig'].add_trace(pgo.Scatter(
-        **np2pgo(data['time'], data['td'], 'Temp D'), mode='lines', legendgroup=None))
+          **np2pgo(data['time'], data['td'], 'Temp D'), mode='lines', yaxis="y", legendgroup=None), secondary_y=False)
 
       ELM['fig'].add_trace(pgo.Scatter(
-      **np2pgo(data['time'], data['hp'], 'Heat'), mode='lines',
-      legendgroup=None), row=2, col=1)
+        **np2pgo(data['time'], data['hp'], 'Heater'), mode='lines', yaxis="y2",
+        legendgroup=None, legend="legend2"), row=2, col=1, secondary_y=False)
+
+      # display the heater range as background
+      n = len(data['time'])
+
+      # dummy plot to generate the secondary axis
+      ELM['fig'].add_trace(
+        pgo.Scatter(
+          x=[data['time'][0]], y=[0], mode='lines', line_width=0, showlegend=False),
+        # important to not interleave gaps additionally. the limit-to-view also
+        # ensures that the autoscale is not disturbed.
+        gap_handler=prs.aggregation.NoGapHandler(),
+        limit_to_view=True,
+        secondary_y=True,
+        row=2, col=1,
+        # yref="paper",
+      )
+
+      shapes = []
+      hls = [0, 1, 2, 3, 4, 5]
+      for hli in hls:
+        for (i0, i1) in islandinfo(data['hl'], hli, True)[0]:
+          shapes.append(
+            dict(
+              fillcolor="rgba(63, 81, 181, 0.2)",
+              opacity=0.70,
+              line={"width": 0},
+              type="rect",
+              x0=data['time'][i0],
+              x1=data['time'][i1],
+              xref="x",
+              y0=0,
+              y1=hli/5,
+              yref="y2 domain",  #"paper"
+              layer="below",  # "between"
+              # label=dict(text=f"{hli}", textposition="top center", font=dict(size=12)),
+            ))
+      ELM['fig'].update_layout(shapes=shapes)
 
       ELM['plot'].visible = True
       ELM['plot'].update()
@@ -167,6 +251,8 @@ def update_data():
         ELM['label_update_last_fmt'].format(
           last=datetime.datetime.fromtimestamp(
             ELM['update_last']).strftime("%Y-%m-%dT%H:%M:%S.%f")))
+    out = f"{t2 - t1:.3f}, {time.time() - t1:.3f}, " + out
+    print(out)
     
 def update_fig():
   ELM['fig'].update_yaxes(
@@ -180,10 +266,10 @@ def update_fig():
 def index():
   # initialize objects
   pio.templates.default = 'plotly_dark'
-  # ELM['fig'] = pgo.Figure()
-  ELM['fig'] = ply.subplots.make_subplots(
-    rows=2, cols=1, specs = [[{'t': 0.0}], [{}]], shared_xaxes=True,
-    vertical_spacing=0.02)
+  ELM['fig'] = prs.FigureResampler(pgo.Figure()).set_subplots(
+    rows=2, cols=1, row_heights=[0.7, 0.3],
+    specs = [[{'t': 0.0}], [{"secondary_y": True}]], shared_xaxes=True,
+    vertical_spacing=0.025)
 
   # render header
   ui.context.client.content.classes('h-[100vh]')
@@ -221,8 +307,13 @@ def index():
     ).bind_value(app.storage.user, 'dark_mode').props('icon="dark_mode"')
 
   with ui.row():
-    ELM['label_file'] = ui.label(
-      ELM['label_file_fmt'].format(filename=os.path.basename(ELM['filename'])))
+    ELM['label_file'] = ui.label(ELM['label_file_fmt'].format(filename=fntl())) \
+                          .bind_text_from(ELM, 'filename',
+                                          lambda filename: ELM['label_file_fmt'].format(filename=fntl()))
+    ELM['label_file_tt'] = ui.tooltip(None) \
+                             .bind_text_from(ELM, 'filename', lambda filename: fnttt()) \
+                             .bind_visibility_from(ELM, 'filename', bool) \
+                             .move(ELM['label_file'])
     ELM['label_data_len'] = ui.label(ELM['label_data_len_fmt'].format(num=0, numa=0))
     ELM['label_data_temp'] = ui.label(ELM['label_data_temp_fmt'].format(min=0, max=0))
     ELM['label_data_heat'] = ui.label(ELM['label_data_heat_fmt'].format(min=0, max=0))
@@ -243,31 +334,52 @@ def index():
     ui.label('Heater')
     ELM['number_heat_min'] = \
       ui.number(
-        label='min', value=None, format='%.2f', min=0, step=1.0, suffix='%') \
+        label='min', value=0, format='%.2f', min=0, step=1.0, suffix='%') \
         .props('clearable').classes('w-32').on(
           'update:model-value', lambda e: update_fig(), throttle=1.0)
     ELM['number_heat_max'] = \
       ui.number(
-        label='max', value=None, format='%.2f', min=0, step=1.0, suffix='%') \
+        label='max', value=100, format='%.2f', min=0, step=1.0, suffix='%') \
         .props('clearable').classes('w-32').on(
           'update:model-value', lambda e: update_fig(), throttle=1.0)
 
   ELM['fig'].update_layout(
     height=640,
-    margin={'t': 25},
+    margin={'t': 25, 'r': 0},
     #legend_tracegroupgap=140,
     template=ELM['plotly_dark'] if dark_mode.value else ELM['plotly_light'],
     yaxis1_title='Temperature, K',
     yaxis2_title='Power, %',
     yaxis2_range=[0, 100],
     xaxis2_title='Time',
+    legend={
+      'orientation': 'h',
+      'xanchor': 'left',
+      'yanchor': 'bottom',
+      'y': 1.0,
+    },
+    legend2={
+      'orientation': 'h',
+      'xanchor': 'left',
+      'yanchor': 'bottom',
+      'y': -0.13,
+    },
   )
   ELM['fig'].update_yaxes(
     row=1, col=1, range=[ELM['number_temp_min'].value, ELM['number_temp_max'].value],
     rangemode="nonnegative")
   ELM['fig'].update_yaxes(
     row=2, col=1, range=[ELM['number_heat_min'].value, ELM['number_heat_max'].value],
-    rangemode="nonnegative")
+    rangemode="nonnegative", showgrid=False)
+  ELM['fig'].update_yaxes(
+    title_text='Heater level',
+    row=2, col=1, range=[0, 5], rangemode="nonnegative", secondary_y=True,
+    fixedrange=True, showgrid=True, ticks="inside", tickwidth=1,
+    # tickcolor='crimson',
+    # nticks=6,
+    # ticklen=5,
+    tickvals=[0, 1, 2, 3, 4, 5],
+  )
   ELM['plot'] = ui.plotly(ELM['fig']).classes('w-full')
 
   # update_data()
@@ -276,6 +388,7 @@ def index():
   ELM['switch_timer'].bind_value_to(ELM['timer'], 'active')
 
 def main_gui(args):
+  ELM['filedir'] = args.dir
   ui.run(
     host=args.host, port=int(args.port), title=ELM['name'],
     dark=False,

notes

@@ -1,2 +1,2 @@
 
-pip install numpy nicegui plotly kaleido
+pip install numpy nicegui plotly kaleido plotly-resampler pytz