Hi, I have a CAD file with 1000 polygon, 500 out 1000 are shifted 0.2m. I want to keep only 500 regardless of the shifting. please advice. thanks
+8- Contributor
Best answer by takashi
Thank Takashi,
No specific criteria. Only the user inserts two polygon cad layers from different sources on the same CAD layer with an error varies from 0.0 to 0.3 cm.
I think Matcher is still helpful.
Set an appropriate value (e.g. 0.5 or so) to the Vector Tolerance parameter, and take a look at output features from the SingleMatched port.
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+19- Supporter
Something like this:
convert the polygons to points, so you can compare them with a point on point overlayer to find those which are offset from each other. Then, pick one from each set of overlaps, and return it back to a polygon.
+8- Contributor
Hi @ohashki ,
What is the criteria to determine if a polygon is shifted?
Thank Takashi,
No specific criteria. Only the user inserts two polygon cad layers from different sources on the same CAD layer with an error varies from 0.0 to 0.3 cm.
Thank Takashi,
No specific criteria. Only the user inserts two polygon cad layers from different sources on the same CAD layer with an error varies from 0.0 to 0.3 cm.
ChangeDetector might help you to compare polygons read from the two differenct sources.
+8- Contributor
Thank Takashi,
No specific criteria. Only the user inserts two polygon cad layers from different sources on the same CAD layer with an error varies from 0.0 to 0.3 cm.
This case is an existing file. two sources are already merged into one file.
Thank Takashi,
No specific criteria. Only the user inserts two polygon cad layers from different sources on the same CAD layer with an error varies from 0.0 to 0.3 cm.
OK, have a look at Matcher too.
+8- Contributor
Something like this:
convert the polygons to points, so you can compare them with a point on point overlayer to find those which are offset from each other. Then, pick one from each set of overlaps, and return it back to a polygon.
Thanks... the logic looks fine. But I cant find the value of for the right value of the tester (@value(_min_count)) .
+8- Contributor
Thank Takashi,
No specific criteria. Only the user inserts two polygon cad layers from different sources on the same CAD layer with an error varies from 0.0 to 0.3 cm.
Sir,
it seem that you misunderstand the problem.
Matcher gives you the identical features.
Thank Takashi,
No specific criteria. Only the user inserts two polygon cad layers from different sources on the same CAD layer with an error varies from 0.0 to 0.3 cm.
Yes, that gives you identical features. The identical features are not-shifted features, aren't they?
+8- Contributor
Thank Takashi,
No specific criteria. Only the user inserts two polygon cad layers from different sources on the same CAD layer with an error varies from 0.0 to 0.3 cm.
Please re read the question.
Thank Takashi,
No specific criteria. Only the user inserts two polygon cad layers from different sources on the same CAD layer with an error varies from 0.0 to 0.3 cm.
Could you please elaborate what situation is "shifted" or not?
Thank Takashi,
No specific criteria. Only the user inserts two polygon cad layers from different sources on the same CAD layer with an error varies from 0.0 to 0.3 cm.
See the attached screenshot.
I thought that the left situation is "shifted" (orange polygon doesn't match blue one), the right situation is "not-shifted" (orange polygon matches blue one).
If it was correct, you can detect "not-shifted" (matched) polygons with Matcher.
If not, what situation is "shifted"?
+9- Enthusiast
@ctredinnick @ohashki Good Morning from Austria,
Sorry to ask, but how can I guarantee that the lower counter ID is the correct geometry?
greetings Michael
+8- Contributor
Thank Takashi,
No specific criteria. Only the user inserts two polygon cad layers from different sources on the same CAD layer with an error varies from 0.0 to 0.3 cm.
Hi,
500 polygons are mistakenly inserted twice at CAD file(duplicated) with a shift of 0.2, They became 1000. I need to remove the duplicated ones (500). is that clear Sir.
+19- Supporter
@ctredinnick @ohashki Good Morning from Austria,
Sorry to ask, but how can I guarantee that the lower counter ID is the correct geometry?
greetings Michael
I don't think it mattered which one was 'correct', just that only one was picked.
An even simpler setup is just to use a Matcher, checking geometry, with a 0.5 tolerance. If there is some criteria for picking which one of the duplicates to keep, then you can apply that on the features which come out as Matched. Else just keep the Single Matched and Not Matched features.
- Best Answer
Thank Takashi,
No specific criteria. Only the user inserts two polygon cad layers from different sources on the same CAD layer with an error varies from 0.0 to 0.3 cm.
I think Matcher is still helpful.
Set an appropriate value (e.g. 0.5 or so) to the Vector Tolerance parameter, and take a look at output features from the SingleMatched port.
+9- Enthusiast
I don't think it mattered which one was 'correct', just that only one was picked.
An even simpler setup is just to use a Matcher, checking geometry, with a 0.5 tolerance. If there is some criteria for picking which one of the duplicates to keep, then you can apply that on the features which come out as Matched. Else just keep the Single Matched and Not Matched features.
My Bad, i didn't saw the answer in the question -.-'
+8- Contributor
Thank Takashi,
No specific criteria. Only the user inserts two polygon cad layers from different sources on the same CAD layer with an error varies from 0.0 to 0.3 cm.
Thanks....
Now...You get it right.🙂