Hei Ravi,
I (hopefully) finsihed the plugin/function today.
However, the stuff/task is non trivial from my perspective. So It works
only for polygon layers now. It could be also used for LineString
Layers, but I disabled it as the Planar Graph Function has similar
functionality. Merging mixed Geometry layers is quite difficult. For
instance right now I don't have an idea how to do that properly for
Lines and Polygons - although this may be a useful function.
The function is located under Tools/Analysis/Intersect Polygon Layers
You may wonder why I did not call it "union" as in ArcGIS. The reason is
simply that the topological operations used are intersections. And I
think we should try to avoid using wrong (but probably older ESRI)
terminology.
Can you test if it does what it is supposed to? At least it worked for
me with the testdata you sent.
cheers,
stefan
PS: I won't do this "customization" work often.. but as you asked for a
long time... ;)
Next thing to do is to transfer some of the Pirol plugins (creating
Grids) and Layer Attribute Statistics, that are not contained anymore in
the PirolJUMP (wonder why)
RAVI KUMAR schrieb:
Hi,
for mineral prognastication, tried to have result
A shape (attribute CODE) + Bshape (Attribute Number) = Polygons with
attributes (Code and Number) from both layers, only populated If they
intersect.
Example:
1.For the resultant polygon pieces, Code=1, Number=200 when they intersect
2.For the resultant polygon pieces, Code=1, Number=0 or NA when they
donot intersect.
Method:
1. A and B layers are selected and Replicated to a NewLayer with right
click menu.
2. NewLayer is polygonised and renamed as AB (it has no attributes)
TRANSFER OF ATTRIBUTES
3. Tools --> Edit Attributes --> Transfer Attributes
Layer A= AB
Layer B= A
Realation= Contains
Un-Expected Result: Though the smaller polygons of AB are contained by
A polygon layer only a few are transfered.
Had this worked then with these steps, the UNION as desired could be
achieved, by repeating a few steps.
Ravi Kumar
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