private String addMean(int column, String line, int start) {
if (start == -1) {
line += "\tNaN";
summaryHdr += "\t" + ResultsTable.getDefaultHeading(column);
} else {
float[] c = column >= 0 ? rt.getColumn(column) : null;
if (c != null) {
ImageProcessor ip = new FloatProcessor(c.length, 1, c, null);
if (ip == null) return line;
ip.setRoi(start, 0, ip.getWidth() - start, 1);
ip = ip.crop();
ImageStatistics stats = new FloatStatistics(ip);
if (stats == null) return line;
line += n(stats.mean);
} else line += "\tNaN";
summaryHdr += "\t" + rt.getColumnHeading(column);
}
return line;
}
