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Reduce location map context to 30km and use zoom 12

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The 80km context made the red LiDAR zone rectangle too small to see.
30km (15km radius) at zoom 12 gives a clear view where the 1km data
zone is visible as a distinct red rectangle in the inset map.
This commit is contained in:
Antoine Jacquin
2026-05-15 12:01:37 +02:00
parent 5af53a390f
commit 9e89686ac5
1 changed files with 8 additions and 7 deletions
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15
lidar_pipeline/rendering.py
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@ -274,8 +274,8 @@ def _apply_colormap(data, tif_file):
def _download_location_map(min_x, max_x, min_y, max_y): def _download_location_map(min_x, max_x, min_y, max_y):
"""Download a wide-area IGN topographic map for location context. """Download a wide-area IGN topographic map for location context.
Downloads a zoomed-out IGN PLANIGNV2 tile covering ~80km around the Downloads a zoomed-out IGN PLANIGNV2 tile covering ~30km around the
processed zone, giving wider geographic context. Results are cached to processed zone, giving regional context. Results are cached to
avoid re-downloading for each visualization in the same tile. avoid re-downloading for each visualization in the same tile.
Args: Args:
@ -305,12 +305,13 @@ def _download_location_map(min_x, max_x, min_y, max_y):
center_lat = clats[0] center_lat = clats[0]
center_lon = clons[0] center_lon = clons[0]
# Use zoom 10 for context (wider view: ~150m/px) # Use zoom 12 for context (~30m/px — good detail at 15km radius)
context_zoom = 10 context_zoom = 12
# Expand bounds to ~80km for regional context (shows nearby cities/rivers) # Expand bounds to ~30km for regional context
# At zoom 10, this gives ~500px wide image — ideal for a small inset # Large enough to see surrounding towns/rivers, small enough that
context_half = 40000 # 40km each side = 80km total # the processed zone (typically 1km) is clearly visible as a red rectangle
context_half = 15000 # 15km each side = 30km total
context_min_x = center_x - context_half context_min_x = center_x - context_half
context_max_x = center_x + context_half context_max_x = center_x + context_half
context_min_y = center_y - context_half context_min_y = center_y - context_half