geometry coercer

Coerce the polygons to lines.

 

Use topologybuilder, input the lines.

 

 

Output lines is result u wish.

i tried that....he splits the polygons in polylines...thats ok...but i have two lines on a acommon border...can i remove that when they are same in geometry?

You can use the matcher. Match 2D and set lenient matching to yes.

 

Output sinlgematched and not matched.

The TopologyBuilder generates a single line for a shared boundary of adjacent areas if the boundary lines exactly match. I guess there are slight gaps between them.

 

If so, the Matcher doesn't work as expected unfortunately.

 

Firstly check if there are such gaps.

Hi Takshi,

 

 

You would expect that, but it is not true.

 

If i use topology builder on community dataset (community borders), wich is  topoligy correct, no gaps no overlaps, it does create 2x the edges where they match.

 

Franco is right, so a matcher is required. Also it must be set to lenient matching else it will not match (wich i find strange).

 

 

Maybe the transformer is flawed?

Hi all,

 

 

the interesting thing that the result is that sometimes there is only one line, sometimes there are two lines....hmmm...

correction.

 

 

When u enter the areas in the topologybuilder this is true, u get 1 line at borders. (wich is where Takashi is right..)

 

When u coerce them first to polylines and enter the polylines in the topology builder, you get double lines at borders..

 

 

 

Really?

 

I always can get single lines for common boundaries, if those are exactly match.

 

Strange.

Right....without coercer it works...;-))

Ah, the doubt has been cleared ;)