480 lines
15 KiB
Python
480 lines
15 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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Created on Thu Jul 30th 2025
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@author: Marcel Weschke
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@email: marcel.weschke@directbox.de
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"""
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# %% Load libraries
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import os
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import base64
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import io
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import datetime
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from math import radians, sin, cos, sqrt, asin
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import dash
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from dash import dcc, html, Input, Output, Dash
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import dash_bootstrap_components as dbc
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import pandas as pd
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import numpy as np
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import plotly.express as px
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import plotly.graph_objects as go
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import gpxpy
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# === Helper Functions ===
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def list_gpx_files():
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folder = './gpx_files'
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#return [{'label': f, 'value': os.path.join(folder, f)} for f in os.listdir(folder) if f.endswith('.gpx')]
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files = [f for f in os.listdir(folder) if f.endswith('.gpx')]
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# Extract date from the start of the filename and sort descending
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def extract_date(filename):
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try:
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return datetime.datetime.strptime(filename[:10], '%Y-%m-%d')
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except ValueError:
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return datetime.datetime.min # Put files without a valid date at the end
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files.sort(key=extract_date, reverse=True)
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return [{'label': f, 'value': os.path.join(folder, f)} for f in files]
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def haversine(lon1, lat1, lon2, lat2):
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R = 6371
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dlon = radians(lon2 - lon1)
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dlat = radians(lat2 - lat1)
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a = sin(dlat/2)**2 + cos(radians(lat1)) * cos(radians(lat2)) * sin(dlon/2)**2
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return 2 * R * asin(sqrt(a))
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def process_gpx(file_path):
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with open(file_path, 'r') as gpx_file:
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gpx = gpxpy.parse(gpx_file)
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points = gpx.tracks[0].segments[0].points
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df = pd.DataFrame([{
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'lat': p.latitude,
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'lon': p.longitude,
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'elev': p.elevation,
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'time': p.time
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} for p in points])
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# Basic cleanup
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df['time'] = pd.to_datetime(df['time'])
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df['time_loc'] = df['time'].dt.tz_localize(None)
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df['time_diff'] = df['time'] - df['time'][0]
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df['time_diff_sec'] = df['time_diff'].dt.total_seconds()
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df['duration_hms'] = df['time_diff'].apply(lambda td: str(td).split('.')[0])
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# Cumulative distance (km)
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distances = [0]
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for i in range(1, len(df)):
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d = haversine(df.loc[i-1, 'lon'], df.loc[i-1, 'lat'], df.loc[i, 'lon'], df.loc[i, 'lat'])
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distances.append(distances[-1] + d)
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df['cum_dist_km'] = distances
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# Elevation and elevation change
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df['elev'] = df['elev'].bfill()
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df['delta_elev'] = df['elev'].diff().fillna(0)
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df['rel_elev'] = df['elev'] - df['elev'].iloc[0]
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# Velocity (used in pace and speed)
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df['vel_kmps'] = np.gradient(df['cum_dist_km'], df['time_diff_sec'])
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# Speed calculation (km/h) via distance and time diffs
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df['delta_t'] = df['time'].diff().dt.total_seconds()
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df['delta_d'] = df['cum_dist_km'].diff()
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df['speed_kmh'] = (df['delta_d'] / df['delta_t']) * 3600
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df['speed_kmh'] = df['speed_kmh'].replace([np.inf, -np.inf], np.nan)
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# Smoothed speed (Gaussian rolling)
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df['speed_kmh_smooth'] = df['speed_kmh'].rolling(window=10, win_type="gaussian", center=True).mean(std=2)
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return df
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# =============================================================================
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# INFO BANNER
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# =============================================================================
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def create_info_banner(df):
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# Total distance in km
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total_distance_km = df['cum_dist_km'].iloc[-1]
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# Total time as timedelta
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total_seconds = df['time_diff_sec'].iloc[-1]
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hours, remainder = divmod(int(total_seconds), 3600)
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minutes, seconds = divmod(remainder, 60)
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formatted_total_time = f"{hours:02d}:{minutes:02d}:{seconds:02d}"
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# Average pace (min/km)
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if total_distance_km > 0:
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pace_sec_per_km = total_seconds / total_distance_km
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pace_min = int(pace_sec_per_km // 60)
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pace_sec = int(pace_sec_per_km % 60)
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formatted_pace = f"{pace_min}:{pace_sec:02d} min/km"
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else:
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formatted_pace = "N/A"
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# Build the info banner layout
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info_banner = html.Div([
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html.Div([
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html.H4("Total Distance", style={'margin-bottom': '5px'}),
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html.H2(f"{total_distance_km:.2f} km")
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], style={'width': '30%', 'display': 'inline-block', 'textAlign': 'center'}),
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html.Div([
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html.H4("Total Time", style={'margin-bottom': '5px'}),
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html.H2(formatted_total_time)
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], style={'width': '30%', 'display': 'inline-block', 'textAlign': 'center'}),
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html.Div([
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html.H4("Average Pace", style={'margin-bottom': '5px'}),
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html.H2(formatted_pace)
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], style={'width': '30%', 'display': 'inline-block', 'textAlign': 'center'}),
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], style={
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'display': 'flex',
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'justifyContent': 'space-around',
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'backgroundColor': '#1e1e1e',
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'color': 'white',
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'padding': '20px',
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'marginBottom': '5px',
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'borderRadius': '10px',
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'width': '100%',
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#'maxWidth': '1200px',
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'margin': 'auto'
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})
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return info_banner
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# =============================================================================
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# START OF THE PLOTS
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# =============================================================================
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def create_map_plot(df):
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# fig = px.line_mapbox(
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# df,
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# lat='lat',
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# lon='lon',
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# hover_name='time',
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# hover_data={
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# 'cum_dist_km': ':.2f',
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# 'duration_hms': True,
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# 'lat': False,
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# 'lon': False,
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# 'time': False
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# },
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# labels={
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# 'cum_dist_km': 'Distance (km) ',
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# 'duration_hms': 'Elapsed Time '
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# },
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# zoom=13,
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# height=800
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# )
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fig = px.line_mapbox(
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df,
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lat='lat',
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lon='lon',
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zoom=13,
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height=800
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)
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fig.update_traces(
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hovertemplate=(
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#"Time: %{customdata[0]}<br>" +
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"Distance (km): %{customdata[1]:.2f}<br>" +
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"Elapsed Time: %{customdata[2]}<extra></extra>"
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),
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customdata=df[['time', 'cum_dist_km', 'duration_hms']]
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)
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#
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fig.update_layout(mapbox_style="open-street-map")
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fig.update_traces(line=dict(color="#f54269", width=3))
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# Start / Stop marker
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start = df.iloc[0]
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end = df.iloc[-1]
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fig.add_trace(go.Scattermapbox(
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lat=[start['lat']], lon=[start['lon']], mode='markers+text',
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marker=dict(size=12, color='#fca062'), text=['Start'], name='Start', textposition='bottom left'
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))
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fig.add_trace(go.Scattermapbox(
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lat=[end['lat']], lon=[end['lon']], mode='markers+text',
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marker=dict(size=12, color='#b9fc62'), text=['Stop'], name='Stop', textposition='bottom left'
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))
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fig.update_layout(paper_bgcolor='#1e1e1e', font=dict(color='white'))
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fig.update_layout(
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legend=dict(
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orientation='h', # horizontal layout
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yanchor='top',
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y=-0.01, # move legend below the map
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xanchor='center',
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x=0.5,
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font=dict(color='white')
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)
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)
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return fig
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def create_elevation_plot(df):
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x = df['time']
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y = df['rel_elev']
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n_layers = 36
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base_color = (5, 158, 5) # Greenish
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max_alpha = 0.25
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traces = []
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# Main elevation line
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traces.append(go.Scatter(
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x=x, y=y,
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mode='lines',
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line=dict(color='lime', width=2),
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showlegend=False
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))
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# Single gradient fill (above and below 0)
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for i in range(1, n_layers + 1):
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alpha = max_alpha * (1 - i / n_layers)
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color = f'rgba({base_color[0]}, {base_color[1]}, {base_color[2]}, {alpha:.3f})'
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y_layer = y * (i / n_layers)
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traces.append(go.Scatter(
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x=x,
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y=y_layer,
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mode='lines',
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fill='tonexty',
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line=dict(width=0),
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fillcolor=color,
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hoverinfo='skip',
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showlegend=False
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))
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fig = go.Figure(data=traces)
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fig.update_layout(
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title=dict(text='Höhenprofil relativ zum Startwert', font=dict(size=16)),
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xaxis_title='Zeit',
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yaxis_title='Höhe relativ zum Start (m)',
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template='plotly_dark',
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paper_bgcolor='#1e1e1e',
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plot_bgcolor='#111111',
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font=dict(color='white'),
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margin=dict(l=40, r=40, t=50, b=40),
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height=500
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)
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return fig
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def create_deviation_plot(df): #Distanz-Zeit-Diagramm
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# Compute mean velocity in km/s
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vel_kmps_mean = df['cum_dist_km'].iloc[-1] / df['time_diff_sec'].iloc[-1]
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# Expected cumulative distance assuming constant mean velocity
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df['cum_dist_km_qmean'] = df['time_diff_sec'] * vel_kmps_mean
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# Deviation from mean velocity distance
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df['del_dist_km_qmean'] = df['cum_dist_km'] - df['cum_dist_km_qmean']
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# Plot the deviation
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fig = px.line(
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df,
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x='time_loc',
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y='del_dist_km_qmean',
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labels={
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'time_loc': 'Zeit',
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'del_dist_km_qmean': 'Δ Strecke (km)'
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},
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template='plotly_dark',
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)
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fig.update_layout(
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title=dict(text='Abweichung von integrierter Durchschnittsgeschwindigkeit', font=dict(size=16)),
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yaxis_title='Abweichung (km)',
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xaxis_title='Zeit',
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height=400,
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paper_bgcolor='#1e1e1e',
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plot_bgcolor='#111111',
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font=dict(color='white', size=14),
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margin=dict(l=40, r=40, t=50, b=40)
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)
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# Add horizontal reference line at y=0
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fig.add_shape(
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type='line',
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x0=df['time_loc'].iloc[0],
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x1=df['time_loc'].iloc[-1],
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y0=0,
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y1=0,
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line=dict(color='gray', width=1, dash='dash'),
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name='Durchschnittsgeschwindigkeit'
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)
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return fig
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def create_speed_plot(df):
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mask = df['speed_kmh_smooth'].isna()
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mean_speed_kmh = df['speed_kmh'].mean()
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fig = go.Figure()
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fig.add_trace(go.Scatter(
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x=df['time'][~mask],
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y=df['speed_kmh_smooth'][~mask],
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mode='lines',
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name='Geglättete Geschwindigkeit',
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line=dict(color='royalblue')
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))
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fig.update_layout(
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title=dict(text=f'Geschwindigkeit über die Zeit (geglättet) (∅: {mean_speed_kmh:.2f} km/h)', font=dict(size=16)),
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xaxis=dict(title='Zeit', tickformat='%H:%M', type='date'),
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yaxis=dict(title='Geschwindigkeit (km/h)', rangemode='tozero'),
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template='plotly_dark',
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paper_bgcolor='#1e1e1e',
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plot_bgcolor='#111111',
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font=dict(color='white'),
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margin=dict(l=40, r=40, t=40, b=40)
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)
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return fig
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def create_pace_bars_plot(df):
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# Ensure time column is datetime
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if not pd.api.types.is_datetime64_any_dtype(df['time']):
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df['time'] = pd.to_datetime(df['time'], errors='coerce')
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# Assign km segments
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df['km'] = df['cum_dist_km'].astype(int)
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# Time in seconds from start
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df['time_sec'] = (df['time'] - df['time'].iloc[0]).dt.total_seconds()
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# Step 3: Compute pace manually per km group
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df['km_start'] = np.nan
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df['segment_len'] = np.nan
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df['pace_min_per_km'] = np.nan
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for km_val, group in df.groupby('km'):
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dist_start = group['cum_dist_km'].iloc[0]
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dist_end = group['cum_dist_km'].iloc[-1]
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segment_len = dist_end - dist_start
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time_start = group['time_sec'].iloc[0]
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time_end = group['time_sec'].iloc[-1]
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elapsed_time_sec = time_end - time_start
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if segment_len > 0:
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pace_min_per_km = (elapsed_time_sec / 60) / segment_len
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else:
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pace_min_per_km = np.nan
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df.loc[group.index, 'km_start'] = km_val
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df.loc[group.index, 'segment_len'] = segment_len
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df.loc[group.index, 'pace_min_per_km'] = pace_min_per_km
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# Clean types
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df['km_start'] = df['km_start'].astype(int)
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df['segment_len'] = df['segment_len'].astype(float)
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df['pace_min_per_km'] = pd.to_numeric(df['pace_min_per_km'], errors='coerce')
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# Step 4: Create Plotly bar chart
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fig = go.Figure()
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fig.add_trace(go.Bar(
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x=df['km_start'],
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y=df['pace_min_per_km'],
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width=df['segment_len'],
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text=[f"{v:.1f} min/km" if pd.notnull(v) else "" for v in df['pace_min_per_km']],
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textposition='outside',
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marker_color='dodgerblue',
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name='Pace pro km',
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offset=0
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))
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fig.update_layout(
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title=dict(text='Pace (min/km) je Kilometer', font=dict(size=16)),
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xaxis_title='Distanz (km)',
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yaxis_title='Minuten pro km',
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barmode='overlay',
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bargap=0,
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bargroupgap=0,
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xaxis=dict(
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type='linear',
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range=[0, df['cum_dist_km'].iloc[-1]],
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tickmode='linear',
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dtick=1,
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showgrid=True
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),
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template='plotly_dark',
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height=400,
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margin=dict(l=40, r=40, t=30, b=40),
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plot_bgcolor='#111111',
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paper_bgcolor='#1e1e1e',
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font=dict(color='white')
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)
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return fig
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# === App Setup ===
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app = dash.Dash(__name__, external_stylesheets=[dbc.themes.SLATE])
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app.title = "GPX Dashboard"
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app.layout = html.Div([
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html.H1("Running Dashboard", style={'textAlign': 'center'}),
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dcc.Store(id='stored-df'),
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html.Div([
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html.Label("GPX-Datei wählen:", style={'color': 'white'}),
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dcc.Dropdown(
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id='gpx-file-dropdown',
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options=list_gpx_files(),
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value=list_gpx_files()[0]['value'],
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clearable=False,
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style={'width': '300px', 'color': 'black'}
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)
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], style={'padding': '20px', 'backgroundColor': '#1e1e1e'}),
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html.Div(id='info-banner'),
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dcc.Graph(id='fig-map'),
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dcc.Graph(id='fig-elevation'),
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dcc.Graph(id='fig_deviation'),
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dcc.Graph(id='fig_speed'),
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dcc.Graph(id='fig_pace_bars')
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])
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# === Callbacks ===
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# Callback 1: Load GPX File and Store as JSON
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@app.callback(
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Output('stored-df', 'data'),
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Input('gpx-file-dropdown', 'value')
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)
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def load_gpx_data(path):
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df = process_gpx(path)
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return df.to_json(date_format='iso', orient='split')
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# Callback 2: Update All Plots
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@app.callback(
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Output('info-banner', 'children'),
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Output('fig-map', 'figure'),
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Output('fig-elevation', 'figure'),
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Output('fig_deviation', 'figure'),
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Output('fig_speed', 'figure'),
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Output('fig_pace_bars', 'figure'),
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Input('stored-df', 'data')
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)
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def update_all_plots(json_data):
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df = pd.read_json(json_data, orient='split')
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info = create_info_banner(df)
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fig_map = create_map_plot(df)
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fig_elev = create_elevation_plot(df)
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fig_dev = create_deviation_plot(df)
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fig_speed = create_speed_plot(df)
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fig_pace = create_pace_bars_plot(df)
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return info, fig_map, fig_elev, fig_dev, fig_speed, fig_pace
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# === Run Server ===
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if __name__ == '__main__':
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app.run(debug=True, port=8051)
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# NOTE:
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# Zusammenhang zwischen Pace und Geschwindigkeit
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# - Pace = Minuten pro Kilometer (z. B. 5:40/km)
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# - Geschwindigkeit = Kilometer pro Stunde (z. B. 10.71 km/h)
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#
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