added plot_map

README.md

@@ -11,6 +11,12 @@ A plot of activities as small multiples. The concept behind this plot was origin
 
 ![facets](https://github.com/marcusvolz/strava_py/blob/main/plots/facets001.png "Facets, showing activity outlines")
 
+### Map
+
+A map of activities viewed in plan.
+
+![map](https://github.com/marcusvolz/strava_py/blob/main/plots/map001.png "A map of activities viewed in plan.")
+
 ## How to use
 
 ### Bulk export from Strava
@@ -38,3 +44,10 @@ df = process_data(<path to folder with GPX and / or FIT files>)
 ```python
 plot_facets(df, output_file = 'plot.png')
 ```
+
+### Plot activity map
+
+```python
+plot_map(df, lon_min=None, lon_max= None, lat_min=None, lat_max=None,
+             alpha=0.3, linewidth=0.3, output_file="map.png")
+```

src/strava_py/cli.py

@@ -9,10 +9,17 @@ def main():
     parser.add_argument(
         "-o", "--output_file", default="plot.png", help="Output PNG file"
     )
+    parser.add_argument("lon_min", default=None, help="Minimum longitude for plot_map (values less than this are removed from the data)")
+    parser.add_argument("lon_max", default=None, help="Maximum longitude for plot_map (values greater than this are removed from the data)")
+    parser.add_argument("lat_min", default=None, help="Minimum latitude for plot_map (values less than this are removed from the data)")
+    parser.add_argument("lat_max", default=None, help="Maximum latitude for plot_map (values greater than this are removed from the data)")
+    parser.add_argument("alpha", default=0.4, help="Line transparency. 0 = Fully transparent, 1 = No transparency")
+    parser.add_argument("linewidth", default=0.4, help="Line width")
     args = parser.parse_args()
 
     # Normally imports go at the top, but scientific libraries can be slow to import
     # so let's validate arguments first
+    from strava_py.plot_map import plot_map
     from strava_py.plot_facets import plot_facets
     from strava_py.process_data import process_data
 
@@ -23,6 +30,10 @@ def main():
     plot_facets(df, output_file=args.output_file)
     print(f"Saved to {args.output_file}")
 
+    print("Plotting map...")
+    plot_facets(df, output_file=args.output_file)
+    print(f"Saved to {args.output_file}")
+
 
 if __name__ == "__main__":
     main()

src/strava_py/plot_map.py

@@ -0,0 +1,34 @@
+import matplotlib.pyplot as plt
+
+def plot_map(df, lon_min=None, lon_max= None, lat_min=None, lat_max=None,
+             alpha=0.3, linewidth=0.3, output_file="map.png"):
+
+    # Remove data outside the input ranges for lon / lat
+    if lon_min is not None:
+        df = df[df['lon'] >= lon_min]
+
+    if lon_max is not None:
+        df = df[df['lon'] <= lon_max]
+
+    if lat_min is not None:
+        df = df[df['lat'] >= lat_min]
+
+    if lat_max is not None:
+        df = df[df['lat'] <= lat_max]
+
+    # Create a list of activity names
+    activities = df['name'].unique()
+    n = len(activities)
+
+    # Plot activities one by one
+    for i in range(n):
+        X = df[df['name'] == activities[i]]['lon']
+        Y = df[df['name'] == activities[i]]['lat']
+        plt.plot(X, Y, color = 'black', alpha = alpha, linewidth = linewidth)
+
+    # Update plot aesthetics
+    plt.axis('off')
+    plt.axis('equal')
+    plt.margins(0)
+    plt.subplots_adjust(left = 0.05, right = 0.95, bottom = 0.05, top = 0.95)
+    plt.savefig(output_file, dpi = 600)