From 18cf1ca1c742031ed64fa66b11cfe4f406af4e7a Mon Sep 17 00:00:00 2001
From: Tim Molter <tim.molter@gmail.com>
Date: Sun, 12 Apr 2015 16:48:17 +0200
Subject: [PATCH] add formatting check to always print the value zero as "0"
---
.../internal/chartpart/AxisTickNumericalCalculator.java | 2 +-
.../com/xeiam/xchart/internal/chartpart/NumberFormatter.java | 5 +++++
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/xchart/src/main/java/com/xeiam/xchart/internal/chartpart/AxisTickNumericalCalculator.java b/xchart/src/main/java/com/xeiam/xchart/internal/chartpart/AxisTickNumericalCalculator.java
index 5ef23fb8..ba41617d 100644
--- a/xchart/src/main/java/com/xeiam/xchart/internal/chartpart/AxisTickNumericalCalculator.java
+++ b/xchart/src/main/java/com/xeiam/xchart/internal/chartpart/AxisTickNumericalCalculator.java
@@ -74,7 +74,7 @@ public class AxisTickNumericalCalculator extends AxisTickCalculator {
// generate all tickLabels and tickLocations from the first to last position
for (BigDecimal value = cleanedFirstPosition; value.compareTo(BigDecimal.valueOf(maxValue + 2 * cleanedGridStep.doubleValue())) < 0; value = value.add(cleanedGridStep)) {
- // System.out.println(tickPosition);
+ // System.out.println(value);
String tickLabel = numberFormatter.formatNumber(value, minValue, maxValue, axisDirection);
// System.out.println(tickLabel);
tickLabels.add(tickLabel);
diff --git a/xchart/src/main/java/com/xeiam/xchart/internal/chartpart/NumberFormatter.java b/xchart/src/main/java/com/xeiam/xchart/internal/chartpart/NumberFormatter.java
index 41782c26..6e8682f9 100644
--- a/xchart/src/main/java/com/xeiam/xchart/internal/chartpart/NumberFormatter.java
+++ b/xchart/src/main/java/com/xeiam/xchart/internal/chartpart/NumberFormatter.java
@@ -43,6 +43,11 @@ public class NumberFormatter {
// System.out.println("min: " + min);
// System.out.println("max: " + max);
+ // some special cases first
+ if (value.compareTo(BigDecimal.ZERO) == 0) {
+ return "0";
+ }
+
double difference = max - min;
int placeOfDifference;
if (difference == 0.0) {
--
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