auto-sync: 2026-05-13 14:40:01

tasks/enduro-trails/scripts/download_west.py

@@ -0,0 +1,51 @@
+import urllib.request
+import zipfile
+import os
+
+SRTM_DIR = '/home/slin/enduro-trails/data/srtm'
+BASE_URL = 'https://srtm.kurviger.de/SRTM3/Eurasia'
+
+# Smolensk ~32E to Solnechnogorsk ~37E
+# Latitudes: N53-N56 (Smolensk is at 54.8N, Moscow at 55.7N)
+tiles = []
+for lat in [53, 54, 55, 56]:
+    for lon in range(32, 37):
+        tiles.append(f'N{lat}E{lon:03d}')
+
+os.chdir(SRTM_DIR)
+count = 0
+
+opener = urllib.request.build_opener()
+opener.addheaders = [('User-Agent', 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36')]
+urllib.request.install_opener(opener)
+
+for tile in tiles:
+    hgt = f'{tile}.hgt'
+    if os.path.exists(hgt):
+        print(f'  EXISTS: {hgt}')
+        continue
+    
+    url = f'{BASE_URL}/{tile}.hgt.zip'
+    tmp = f'/tmp/{tile}.hgt.zip'
+    
+    try:
+        print(f'  Downloading {tile}...', end=' ', flush=True)
+        urllib.request.urlretrieve(url, tmp)
+        
+        if os.path.getsize(tmp) > 0:
+            with zipfile.ZipFile(tmp, 'r') as z:
+                z.extractall('.')
+            os.remove(tmp)
+            size = os.path.getsize(hgt) if os.path.exists(hgt) else 0
+            print(f'OK ({size // 1024}KB)')
+            count += 1
+        else:
+            print('EMPTY')
+            os.remove(tmp)
+    except Exception as e:
+        print(f'FAIL: {e}')
+        if os.path.exists(tmp):
+            os.remove(tmp)
+
+print(f'\nDownloaded: {count} new files')
+print(f'Total HGT: {len([f for f in os.listdir(".") if f.endswith(".hgt")])}')