/**
* Calculates statistical values for a data array.
*
* @param data the data array
* @return the max, min, mean, SD, SE and non-NaN data count
*/
private double[] getStatistics(double[] data) {
double max = -Double.MAX_VALUE;
double min = Double.MAX_VALUE;
double sum = 0.0;
double squareSum = 0.0;
int count = 0;
for (int i = 0; i < data.length; i++) {
if (Double.isNaN(data[i])) {
continue;
}
count++;
max = Math.max(max, data[i]);
min = Math.min(min, data[i]);
sum += data[i];
squareSum += data[i] * data[i];
}
double mean = sum / count;
double sd = count < 2 ? Double.NaN : Math.sqrt((squareSum - count * mean * mean) / (count - 1));
if (max == -Double.MAX_VALUE) max = Double.NaN;
if (min == Double.MAX_VALUE) min = Double.NaN;
return new double[] {max, min, mean, sd, sd / Math.sqrt(count), count};
}
public void updateColumnSizes() {
final JTableHeader header = getTableHeader();
final TableCellRenderer defaultRenderer = header == null ? null : header.getDefaultRenderer();
final RowSorter<? extends TableModel> sorter = getRowSorter();
final List<? extends RowSorter.SortKey> current = sorter == null ? null : sorter.getSortKeys();
ColumnInfo[] columns = getListTableModel().getColumnInfos();
int[] sizeMode = new int[columns.length];
int[] headers = new int[columns.length];
int[] widths = new int[columns.length];
int allColumnWidth = 0;
int varCount = 0;
// calculate
for (int i = 0; i < columns.length; i++) {
final ColumnInfo columnInfo = columns[i];
final TableColumn column = getColumnModel().getColumn(i);
// hack to get sort arrow included into the renderer component
if (sorter != null && columnInfo.isSortable()) {
sorter.setSortKeys(
Collections.singletonList(new RowSorter.SortKey(i, SortOrder.ASCENDING)));
}
final Component headerComponent =
defaultRenderer == null
? null
: defaultRenderer.getTableCellRendererComponent(
this, column.getHeaderValue(), false, false, 0, 0);
if (sorter != null && columnInfo.isSortable()) {
sorter.setSortKeys(current);
}
if (headerComponent != null) {
headers[i] = headerComponent.getPreferredSize().width;
}
final String maxStringValue;
final String preferredValue;
if (columnInfo.getWidth(this) > 0) {
sizeMode[i] = 1;
int width = columnInfo.getWidth(this);
widths[i] = width;
} else if ((maxStringValue = columnInfo.getMaxStringValue()) != null) {
sizeMode[i] = 2;
widths[i] =
getFontMetrics(getFont()).stringWidth(maxStringValue) + columnInfo.getAdditionalWidth();
varCount++;
} else if ((preferredValue = columnInfo.getPreferredStringValue()) != null) {
sizeMode[i] = 3;
widths[i] =
getFontMetrics(getFont()).stringWidth(preferredValue) + columnInfo.getAdditionalWidth();
varCount++;
}
allColumnWidth += widths[i];
}
// apply: distribute available space between resizable columns
// and make sure that header will fit as well
int viewWidth = getParent() != null ? getParent().getWidth() : getWidth();
double gold = 0.5 * (3 - Math.sqrt(5));
int addendum =
varCount == 0 || viewWidth < allColumnWidth
? 0
: (int)
((allColumnWidth < gold * viewWidth
? gold * viewWidth
: allColumnWidth < (1 - gold) * viewWidth
? (1 - gold) * viewWidth
: viewWidth)
- allColumnWidth)
/ varCount;
for (int i = 0; i < columns.length; i++) {
TableColumn column = getColumnModel().getColumn(i);
int width = widths[i];
if (sizeMode[i] == 1) {
column.setMaxWidth(width);
column.setPreferredWidth(width);
column.setMinWidth(width);
} else if (sizeMode[i] == 2) {
width = Math.max(width + addendum, headers[i]);
column.setPreferredWidth(width);
column.setMaxWidth(width);
} else if (sizeMode[i] == 3) {
width = Math.max(width + addendum, headers[i]);
column.setPreferredWidth(width);
}
}
}