Without --geometry, set extent on the first --point ± --margin.

1 files changed, 10 insertions, 1 deletions

diff --git a/gis-observation-map b/gis-observation-map
index 19dabd3..e2740c7 100755
--- a/gis-observation-map
+++ b/gis-observation-map
@@ -36,7 +36,9 @@ from qgis.core import (
     QgsLayerDefinition,
     QgsLayerTreeModel,
     QgsMapLayer,
+    QgsPointXY,
     QgsProject,
+    QgsRectangle,
     QgsUnitTypes,
     QgsVectorLayer,
     QgsWkbTypes
@@ -152,7 +154,6 @@ if projectInstance is not None:
             #layerTreeView.setCurrentLayer(layer)
             canvas = QgsMapCanvas()
             canvas.setExtent( layer.extent() )
-            canvas.refresh()
 
 def gpkg_intersects(path, geometries):
     ds = gpkg_drv.Open(path, update=0)
@@ -266,6 +267,14 @@ for path in args.geometry:
             geometries.append(geometry)
             feature = layer.GetNextFeature()
 
+if len(args.geometry) == 0:
+    r = geometries[0].GetGeometryRef(0)
+    pt0X, pt0Y = r.GetPoint_2D(0)
+    pt1X, pt1Y = r.GetPoint_2D(2)
+    canvas = QgsMapCanvas()
+    extent = QgsRectangle(QgsPointXY(pt0X, pt0Y), QgsPointXY(pt1X, pt1Y))
+    canvas.setExtent(extent)
+
 def geometricFilterPolygon(polygon):
     polygon2 = []
     if polygon.GetGeometryType() != ogr.wkbPolygon: