|
@@ -126,9 +126,10 @@ b_UA_TYPE|UA
|
|
|
<i>v.overlay: Polygon union (right) of urban area (left) and Census 2000 (middle) areas (North Carolina dataset)</i>
|
|
<i>v.overlay: Polygon union (right) of urban area (left) and Census 2000 (middle) areas (North Carolina dataset)</i>
|
|
|
</center>
|
|
</center>
|
|
|
|
|
|
|
|
|
|
+<p>
|
|
|
As can be seen by the resulting large number of centroids on boundaries,
|
|
As can be seen by the resulting large number of centroids on boundaries,
|
|
|
the urban areas do not match exactly the Census 2000 areas. In this case
|
|
the urban areas do not match exactly the Census 2000 areas. In this case
|
|
|
-a clean result can be obtained by snapping with a threshold of 0.1 (1 cm).
|
|
|
|
|
|
|
+a clean result can be obtained by snapping with a threshold of 0.1 m.
|
|
|
|
|
|
|
|
<h4>Lines overlaid with polygons</h4>
|
|
<h4>Lines overlaid with polygons</h4>
|
|
|
|
|
|
Markus Metz