jfreechart customize piechart to show absolute values and percentages

Use the MessageFormat symbol {1} for the absolute section value. See StandardPieSectionLabelGenerator for details. public class MyMinimalPieChartExample { private static final String KEY1 = “Datum 1”; public static final String KEY2 = “Datum 2”; public static void main(String[] args) { DefaultPieDataset dataset = new DefaultPieDataset(); dataset.setValue(KEY1, 99); dataset.setValue(KEY2, 77); JFreeChart someChart = ChartFactory.createPieChart( “Header”, dataset, … Read more

I’m plotting absolute value functions in matplotlib and the graph just goes around the vertex

The issue for your goal is your range that you create with linspace. The default number of samples is 50 for this method and they are evenly reparted so depending on your width, 2 might not be in this range. Use the num argument (third position) to increase this value and it will look better … Read more

Math.abs returns wrong value for Integer.Min_VALUE

Integer.MIN_VALUE is -2147483648, but the highest value a 32 bit integer can contain is +2147483647. Attempting to represent +2147483648 in a 32 bit int will effectively “roll over” to -2147483648. This is because, when using signed integers, the two’s complement binary representations of +2147483648 and -2147483648 are identical. This is not a problem, however, as … Read more