| Version 5 (modified by , 12 years ago) ( diff ) |
|---|
The following table summarizes results of running a buffer against the dataset in source:trunk/tests/xmltester/tests/safe/buffer-1.01.xml
| dist | GEOS 3.3.0 + patch | GEOS (b) OLD reduc stratg | GEOS (b) NEW reduc stratg | JTS (c) |
| 0.35 | Same output as 3.2.0 | ok on 1st attempt, no reduction | ok on 1st attempt, no reduction | ok on 1st attempt, no reduction |
| 0.75 | Same output as 3.2.0 | ok on 1st reduction (1e10) | ok on 1st reduction (1e5) | ok on 1st reduction (1e5) |
| 1.01 | Same output as 3.2.0 | ok on 2nd reduction (1e9) | fail on 5th reduction (1e1) | ok on 1st reduction (1e5) |
| 1.1 (a) | Same output as 3.2.0 | ok on 2nd reduction (1e9) | ok on 1st reduction (1e5) | ok on 1st reduction (1e5) |
| 1.5 | Half incorrect (i) | ok on 2nd reduction (1e9) | fail on 6th reduction (1e0) | fail on 1st reduction (1e5) |
| 2 | Incorrect output(ii) | fail on 10th reduction (1e1) | fail on 6th reduction (1e0) | fail on 1st reduction (1e5) |
| 5 | Incorrect output(ii) | fail on 10th reduction (1e1) | fail on 6th reduction (1e0) | fail on 1st reduction (1e5) |
| 10 | Incorrect output(ii) | fail on 10th reduction (1e1) | fail on 7th reduction (1e-1) | ok on 1st reduction (1e5) |
(a) aka TestBufferJagged.xml
(b) GEOS 3.3.2SVN r3523 / 3.4.0SVN r3524 on a 64bit system
(c) JTS rev.480
(i) Same as GEOS 3.2.0 in xmltester. Incorrect in GEOS 3.3.0 client -- same problem as (ii).
(ii) Output seems to have lost way too much precision.
Attachments (7)
-
diffnoding.wkt.gz
(24.6 KB
) - added by 12 years ago.
offsetcurve produced by both JTS and GEOS when buffering input by 1.01 distance. GEOS and JTS compute edges depth differently starting from this same input.
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bufrob3.wkt
(7.8 KB
) - added by 12 years ago.
Using ScaledNoder with scale=1e5 nodes this with edges: JTS 333, GEOS 330
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bufrob3_5.wkt
(3.0 KB
) - added by 12 years ago.
further simplification: 147 edges with JTS, 146 with GEOS
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buffer-tests.zip
(63.3 KB
) - added by 12 years ago.
All buffer tests, with correct expected results
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bufrob3_5_5.wkt
(3.8 KB
) - added by 12 years ago.
Version of bufrob3_5 with all coordinates snapped to a 1e-5 grid
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ScaledNoderTest.java
(5.5 KB
) - added by 12 years ago.
Updated version of ScaledNoderTest for JTS, supports both WKT and HexWKB in input
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bufrob4.wkt
(821 bytes
) - added by 12 years ago.
14 edges with JTS, 13 with GEOS -- input snapped to 1e-5
Download all attachments as: .zip
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