Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/jfree/JFreeUtil.java @ 4564:080411ac948f
More solid S/Q function sampling
| author | Sascha L. Teichmann <teichmann@intevation.de> |
|---|---|
| date | Fri, 16 Nov 2012 17:39:47 +0100 |
| parents | 5a8f8fd5310c |
| children |
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| 4563:25a63512233e | 4564:080411ac948f |
|---|---|
| 114 series.add(x, func.value(x)); | 114 series.add(x, func.value(x)); |
| 115 } | 115 } |
| 116 | 116 |
| 117 return series; | 117 return series; |
| 118 } | 118 } |
| 119 | |
| 120 public static StyledXYSeries sampleFunction2DPositive( | |
| 121 Function func, | |
| 122 Document theme, | |
| 123 String seriesKey, | |
| 124 int samples, | |
| 125 double start, | |
| 126 double end | |
| 127 ) { | |
| 128 StyledXYSeries series = new StyledXYSeries(seriesKey, theme); | |
| 129 | |
| 130 double step = (end - start) / (samples - 1); | |
| 131 | |
| 132 for (int i = 0; i < samples; i++) { | |
| 133 double x = start + (step * i); | |
| 134 double v = func.value(x); | |
| 135 if (x > 0d && v > 0d) { | |
| 136 series.add(x, v); | |
| 137 } | |
| 138 } | |
| 139 | |
| 140 return series; | |
| 141 } | |
| 119 } | 142 } |
| 120 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : | 143 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |