code_public/lidar_rendu
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Reduce location map context to 30km and use zoom 12

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

15
lidar_pipeline/rendering.py
View File

@ -274,8 +274,8 @@ def _apply_colormap(data, tif_file):
def _download_location_map(min_x, max_x, min_y, max_y):
"""Download a wide-area IGN topographic map for location context.
Downloads a zoomed-out IGN PLANIGNV2 tile covering ~80km around the
processed zone, giving wider geographic context. Results are cached to
Downloads a zoomed-out IGN PLANIGNV2 tile covering ~30km around the
processed zone, giving regional context. Results are cached to
avoid re-downloading for each visualization in the same tile.
Args:
@ -305,12 +305,13 @@ def _download_location_map(min_x, max_x, min_y, max_y):
center_lat = clats[0]
center_lon = clons[0]
# Use zoom 10 for context (wider view: ~150m/px)
context_zoom = 10
# Use zoom 12 for context (~30m/px — good detail at 15km radius)
context_zoom = 12
# Expand bounds to ~80km for regional context (shows nearby cities/rivers)
# At zoom 10, this gives ~500px wide image — ideal for a small inset
context_half = 40000 # 40km each side = 80km total
# Expand bounds to ~30km for regional context
# Large enough to see surrounding towns/rivers, small enough that
# 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_max_x = center_x + context_half
context_min_y = center_y - context_half