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Question

Dissolver not working as expected

  • July 26, 2016
  • 4 replies
  • 87 views
A
Forum|alt.badge.img+1

Hi,

I am using FME2016.1 and am trying to dissolve a series of overlapping 2D polygons.

When I run the Dissolver transformer only some of the polygons dissolve, the others disappear all together. I have a feeling the geometry of the polygons must be invalid, but when I run them through the GeometryValidator everything passes.

Any ideas?

Thanks

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4 replies

A
Forum|alt.badge.img+1
  • aquamarine
  • Author
  • July 26, 2016

Is it because my polygons overlap and are not joined at the edges? If so, what should I do instead to get a single polygon for all polygons that intersect each other?

pratap
Contributor
Forum|alt.badge.img+12
  • pratapContributor
  • Contributor
  • July 26, 2016

As far as I know, if they do not touch then it should be individual polygons as output.

could you please upload a sample of polygons which are passing and not passing to check from my end and come to conclusion

A
Forum|alt.badge.img+1
  • aquamarine
  • Author
  • July 26, 2016

Actually when I ran the polygons through AreaOnAreaOverlayer first, they were dissolved correctly in most cases which I assume is because they were converted from overlapping polygons to touching polygons... But this didn't help in all cases for some reason??

jdh
Contributor
Forum|alt.badge.img+40
  • jdhContributor
  • Contributor
  • July 26, 2016

Are there any warnings in the log file?

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