Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/jfree/DoubleBounds.java @ 5673:e1ba8273df07
Add saveguard not to include 0 in a scale for logarithmic axes
Including 0 or allowing negative values triggers a bug in the
jfreechart logarithmic axis code that causes values < 1 to be
drawn in carthesic coordinates.
Fixes:
flys/issue12345
| author | Andre Heinecke <aheinecke@intevation.de> |
|---|---|
| date | Fri, 12 Apr 2013 12:23:53 +0200 |
| parents | 2f6d4f92d628 |
| children |
comparison
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| 5672:c2a590925ec3 | 5673:e1ba8273df07 |
|---|---|
| 1 package de.intevation.flys.jfree; | 1 package de.intevation.flys.jfree; |
| 2 | 2 |
| 3 | 3 |
| 4 import org.jfree.chart.axis.ValueAxis; | 4 import org.jfree.chart.axis.ValueAxis; |
| 5 import org.jfree.chart.axis.LogarithmicAxis; | |
| 5 import org.jfree.data.Range; | 6 import org.jfree.data.Range; |
| 6 | 7 |
| 7 | 8 |
| 8 /** | 9 /** |
| 9 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> | 10 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
| 48 * thus 10 percent on [0,100] -> [-10,110]. | 49 * thus 10 percent on [0,100] -> [-10,110]. |
| 49 */ | 50 */ |
| 50 @Override | 51 @Override |
| 51 public void applyBounds(ValueAxis axis, int percent) { | 52 public void applyBounds(ValueAxis axis, int percent) { |
| 52 double space = (upper - lower) / 100 * percent; | 53 double space = (upper - lower) / 100 * percent; |
| 53 axis.setRange(new Range(lower-space, upper+space)); | 54 if (axis instanceof LogarithmicAxis) { |
| 55 axis.setRange(new Range(Math.max(lower-space, 0.0001), | |
| 56 Math.max(upper+space, 0.0002))); | |
| 57 } else { | |
| 58 axis.setRange(new Range(lower-space, upper+space)); | |
| 59 } | |
| 54 } | 60 } |
| 55 | 61 |
| 56 | 62 |
| 57 @Override | 63 @Override |
| 58 public Bounds combine(Bounds bounds) { | 64 public Bounds combine(Bounds bounds) { |