debug warped map

create_map_poster.py

@@ -99,17 +99,18 @@ THEME = None  # Will be loaded later
 
 def create_gradient_fade(ax, color, location='bottom', zorder=10):
     """
-    Creates a fade effect at the top or bottom of the map.
+    Creates a fade effect at the top or bottom of the map
+    without altering the map aspect/limits.
     """
     vals = np.linspace(0, 1, 256).reshape(-1, 1)
     gradient = np.hstack((vals, vals))
-    
+
     rgb = mcolors.to_rgb(color)
     my_colors = np.zeros((256, 4))
     my_colors[:, 0] = rgb[0]
     my_colors[:, 1] = rgb[1]
     my_colors[:, 2] = rgb[2]
-    
+
     if location == 'bottom':
         my_colors[:, 3] = np.linspace(1, 0, 256)
         extent_y_start = 0
@@ -120,16 +121,29 @@ def create_gradient_fade(ax, color, location='bottom', zorder=10):
         extent_y_end = 1.0
 
     custom_cmap = mcolors.ListedColormap(my_colors)
-    
+
+    # Save current view/aspect so imshow can't distort the map
     xlim = ax.get_xlim()
     ylim = ax.get_ylim()
+    aspect = ax.get_aspect()
+
     y_range = ylim[1] - ylim[0]
-    
     y_bottom = ylim[0] + y_range * extent_y_start
     y_top = ylim[0] + y_range * extent_y_end
-    
-    ax.imshow(gradient, extent=[xlim[0], xlim[1], y_bottom, y_top], 
-              aspect='auto', cmap=custom_cmap, zorder=zorder, origin='lower')
+
+    ax.imshow(
+        gradient,
+        extent=[xlim[0], xlim[1], y_bottom, y_top],
+        aspect='auto',
+        cmap=custom_cmap,
+        zorder=zorder,
+        origin='lower'
+    )
+
+    # Restore view/aspect
+    ax.set_xlim(xlim)
+    ax.set_ylim(ylim)
+    ax.set_aspect(aspect)
 
 def get_edge_colors_by_type(G):
     """
@@ -272,6 +286,7 @@ def create_poster(city, country, point, dist, output_file):
     # Layer 3: Gradients (Top and Bottom)
     create_gradient_fade(ax, THEME['gradient_color'], location='bottom', zorder=10)
     create_gradient_fade(ax, THEME['gradient_color'], location='top', zorder=10)
+    ax.set_aspect("equal", adjustable="box")
     
     # 4. Typography using Roboto font
     if FONTS: