Mercurial > dive4elements > gnv-client
comparison gnv-artifacts/ChangeLog @ 434:0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
gnv-artifacts/trunk@482 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
|---|---|
| date | Wed, 23 Dec 2009 15:28:40 +0000 |
| parents | 828df3ddb758 |
| children | 67091b17462d |
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| 433:828df3ddb758 | 434:0eed5749fd63 |
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| 1 2009-12-23 Sascha L. Teichmann <sascha.teichmann@intevation.de> | |
| 2 | |
| 3 * src/main/java/de/intevation/gnv/math/Interpolation2D.java: | |
| 4 Use local variable debug instead of asking log.isDebugEnabled() | |
| 5 more than once. | |
| 6 | |
| 7 * src/main/java/de/intevation/gnv/math/XYColumn.java: extrapolate | |
| 8 with boundary values. | |
| 9 | |
| 10 * src/main/java/de/intevation/gnv/math/Interpolation3D.java: | |
| 11 Implements a 3D interpolation called 'Profilschnitt' along a | |
| 12 track similiar to the 'Horizontaler Schnittprofil' which takes | |
| 13 all k layers into account. | |
| 14 | |
| 15 At the interpolated (x, y) points columns of parameter values | |
| 16 from surface to ground are interpolated. To do so the four | |
| 17 next neighbor of that columns are figured out. Four | |
| 18 cubic splines are fitted through these parameter values | |
| 19 of these neighbors. Now its possible to continuous eval | |
| 20 the parameter on each. Every entry in the interpolated column | |
| 21 is interpolated bilinear from the four cubic spline interpolated | |
| 22 neighbor values at the respective depth. | |
| 23 | |
| 24 The result is stored into a double valued raster. NaN values | |
| 25 indicates interpolation gaps. | |
| 26 | |
| 1 2009-12-23 Sascha L. Teichmann <sascha.teichmann@intevation.de> | 27 2009-12-23 Sascha L. Teichmann <sascha.teichmann@intevation.de> |
| 2 | 28 |
| 3 * src/main/java/de/intevation/gnv/math/XYColumn.java: Added a method | 29 * src/main/java/de/intevation/gnv/math/XYColumn.java: Added a method |
| 4 prepare() which generates an continues interpolator for the | 30 prepare() which generates an continues interpolator for the |
| 5 given z values. if only one value is given a constant function | 31 given z values. if only one value is given a constant function |