QGIS提升速度

2026-06-21 13:29:19 +08:00
parent fe3ccd005d
commit 5169ed2f33
28 changed files with 444 additions and 394 deletions
@@ -0,0 +1,54 @@
+"""检查模板中所有图层的渲染顺序（z-order）"""
+import zipfile, re, os
+
+TEMPLATE_DIR = r"F:\project\xian\xian_algorithm_new\app\data\template\rainfall"
+fname = "暴雨内涝潜在隐患点及人口分布图.qgz"
+path = os.path.join(TEMPLATE_DIR, fname)
+
+z = zipfile.ZipFile(path)
+qgs_name = [n for n in z.namelist() if n.endswith('.qgs')][0]
+content = z.read(qgs_name).decode('utf-8')
+
+# 提取所有 maplayer 块（保持顺序 — 这就是渲染顺序）
+maplayer_re = re.compile(r'<maplayer[^>]*>(.*?)</maplayer>', re.DOTALL)
+
+print(f"模板: {fname}")
+print(f"{'#':>3s} {'图层名':20s} {'类型':10s} {'可见':4s} {'表名'}")
+print("-" * 80)
+
+for i, m in enumerate(maplayer_re.finditer(content)):
+    block = m.group(1)
+    
+    # 图层名
+    name_m = re.search(r'<layername>([^<]+)</layername>', block)
+    name = name_m.group(1) if name_m else '?'
+    
+    # provider
+    provider_m = re.search(r'<provider[^>]*>(\w+)</provider>', block)
+    provider = provider_m.group(1) if provider_m else '?'
+    
+    # datasource table
+    ds_m = re.search(r'<datasource>(.*?)</datasource>', block, re.DOTALL)
+    ds = ds_m.group(1).strip() if ds_m else ''
+    table_m = re.search(r'table="(\w+)"\."(\w+)"', ds)
+    table = f"{table_m.group(1)}.{table_m.group(2)}" if table_m else '?'
+    
+    # 可见性
+    visible = 'Y' if 'visible="1"' in m.group(0) or 'visible="1"' in block else 'N'
+    
+    # 判断图层类型
+    is_static = table in [
+        'base.rivers', 'base.river', 'base.sx', 'base.sx_capital',
+        'base.sx_street', 'base.sx_xa_county', 'base.sx_xa_county_boundary',
+        'base.sx_zb_county_boundary', 'base.sx_zb_city', 'base.sx_zb_county',
+        'base.active_fault', 'base.traffic_expressway', 'base.traffic_provincial',
+        'base.traffic_railway', 'base.traffic_township', 'base.traffic_trunk_line',
+    ]
+    layer_type = "底图" if is_static else "动态"
+    
+    marker = " <<<" if not is_static and provider == 'postgres' else ""
+    print(f"{i+1:>3d} {name:20s} {provider:10s} {visible:4s} {table:35s} [{layer_type}]{marker}")
+
+print()
+print("提示: 图层按从上到下的顺序渲染（序号小的在底层，序号大的在顶层）")
+print("动态图层如果在底图下方，会被底图完全遮盖")