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maximal frequency of the data

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This commit is contained in:
Denis
2016-07-30 20:24:47 +02:00
parent 67ae48b527
commit 0ec03035f5
1 changed files with 17 additions and 2 deletions
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19
app/src/main/java/org/isoron/uhabits/activities/common/views/FrequencyChart.java
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@@ -66,6 +66,7 @@ public class FrequencyChart extends ScrollableChart
@NonNull @NonNull
private HashMap<Long, Integer[]> frequency; private HashMap<Long, Integer[]> frequency;
private int maxFreq;
public FrequencyChart(Context context) public FrequencyChart(Context context)
{ {
@@ -90,9 +91,23 @@ public class FrequencyChart extends ScrollableChart
public void setFrequency(HashMap<Long, Integer[]> frequency) public void setFrequency(HashMap<Long, Integer[]> frequency)
{ {
this.frequency = frequency; this.frequency = frequency;
maxFreq = getMaxFreq(frequency);
postInvalidate(); postInvalidate();
} }
private int getMaxFreq(HashMap<Long, Integer[]> frequency)
{
int maxValue = 1;
for (Integer[] values : frequency.values())
{
for (Integer value : values)
{
maxValue = Math.max(value, maxValue);
}
}
return maxValue;
}
public void setIsBackgroundTransparent(boolean isBackgroundTransparent) public void setIsBackgroundTransparent(boolean isBackgroundTransparent)
{ {
this.isBackgroundTransparent = isBackgroundTransparent; this.isBackgroundTransparent = isBackgroundTransparent;
@@ -237,8 +252,8 @@ public class FrequencyChart extends ScrollableChart
float padding = rect.height() * 0.2f; float padding = rect.height() * 0.2f;
// maximal allowed mark radius // maximal allowed mark radius
float maxRadius = (rect.height() - 2 * padding) / 2.0f; float maxRadius = (rect.height() - 2 * padding) / 2.0f;
// the real mark radius is scaled down by a factor depending on the value // the real mark radius is scaled down by a factor depending on the maximal frequency
float scale = Math.min(value, 4) / 4.0f; float scale = 1.0f/maxFreq * value;
float radius = maxRadius * scale; float radius = maxRadius * scale;
int colorIndex = Math.round((colors.length-1) * scale); int colorIndex = Math.round((colors.length-1) * scale);