+8Hi,
Attached I have two sets of data with several polygons. The two are almost identical, but one has different polygons or more polygons than the other. How can I do it using FME? I already used the Spatial Relator transformer and change detector transformer but the results were not good.
I want to know the difference between the two, that is what appeared in one and what disappeared in the other. can anybody help me?
Thanks
Best answer by geomancer
This seems to work reasonably well. I cannot guarantee completeness though.
+8Have you tried the ChangeDetector?
Yes, I tried. I believe that works fine when one polygon or polygons like singlepart. In my case no work very well. Thank´s
I´m wainting for more suggestions.
+48Unfortunately, the shapes in the two shapefiles are not almost identical.
When I apply an AreaOnAreaOverlayer, there are small differences between most of the shapes.
It appears the data is slightly shifted between both data sets.
+8Unfortunately, the shapes in the two shapefiles are not almost identical.
When I apply an AreaOnAreaOverlayer, there are small differences between most of the shapes.
It appears the data is slightly shifted between both data sets.
Yes, correct! slightly shifted. The little difference is not important. The Important is the polygons that no have in other dataset, in other words the difference between both.
Thank´s
+48The little difference is important to FME. Because of the little difference, the usual tools like ChangeDetector and Matcher do not work. The little difference makes it much more difficult to answer your question.
+48This seems to work reasonably well. I cannot guarantee completeness though.
+8This seems to work reasonably well. I cannot guarantee completeness though.
Thank´s geomancer!!
work reasonably well. I will test with others datasets.
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