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Tiler issues

  • March 7, 2018
  • 7 replies
  • 42 views

Forum|alt.badge.img

I want to tile Buffered line feature and after that want to dissolve it. But the tiler tile only the total boundary. And do not provide any features into the tiled box. Need some suggestion.

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7 replies

david_r
Celebrity
  • 8394 replies
  • March 7, 2018

When I encounter unexpected behavior in FME, the first thing I try is to insert some Inspectors after each transformer to see what's going on. That might give some clues.


gio
Contributor
Forum|alt.badge.img+15
  • Contributor
  • 2252 replies
  • March 7, 2018

@yasinmelon1

Hi.

Hard to see how that workspace outputs the features you post.

The only way I can come up with is you have such a dense roadnetwork that when buffered by the amount you use, yields the same area as the original boundary.

You are indeed to inspect your input at least.


Forum|alt.badge.img
  • Author
  • 13 replies
  • March 7, 2018

When I encounter unexpected behavior in FME, the first thing I try is to insert some Inspectors after each transformer to see what's going on. That might give some clues.

This is the result after Bufferer transformer. I cannot understand why the features looks so heterogeneous.


david_r
Celebrity
  • 8394 replies
  • March 7, 2018

This is the result after Bufferer transformer. I cannot understand why the features looks so heterogeneous.

I would say that, based on the screenshot above, the result looks like expected.

 

Can you perhaps explain what you'd like the result to be?

david_r
Celebrity
  • 8394 replies
  • March 7, 2018

If you combine the density of your road network with the size of the buffers, it seems you're ending up with buffers covering the entire territory, as per your screenshot. When dissolving all those buffers, you get a polygon covering the same surface as the buffers.

This is basically what @gio says as well.

Consider trying a smaller buffer size or perhaps also filtering away minor roads.


mark2atsafe
Safer
Forum|alt.badge.img+56
  • Safer
  • 2554 replies
  • March 7, 2018

Maybe a dumb question, but what coordinate system is the data? If it's Lat/Long then you need to give it a decimal degrees buffer size. Or reproject into the same units as your buffer. Sorry, that's probably not the issue... but I have seen it happen before.


david_r
Celebrity
  • 8394 replies
  • March 7, 2018

Maybe a dumb question, but what coordinate system is the data? If it's Lat/Long then you need to give it a decimal degrees buffer size. Or reproject into the same units as your buffer. Sorry, that's probably not the issue... but I have seen it happen before.

Or use the GeographicBufferer...