private static List <string> ComputeLabelNames(DataPointFormat format, decimal minXValue, decimal maxXValue, ref List <decimal> allPossibleValues)
{
List <string> labels;
const int MONTH_MULTIPLICATOR = 100;
switch (format.XEncoding)
{
case Encoding.YEAR_MONTH:
labels = new List <string>();
allPossibleValues = new List <decimal>();
// Add from labels
int minYear = (int)minXValue;
int minMonth = (int)(MONTH_MULTIPLICATOR * (minXValue - minYear));
int maxYear = (int)maxXValue;
int maxMonth = (int)(MONTH_MULTIPLICATOR * (maxXValue - maxYear));
for (int year = minYear; year <= maxYear; ++year)
{
for (int month = minMonth;
(year == maxYear && month <= maxMonth) ||
(year < maxYear && month <= 12);
++month)
{
labels.Add(string.Format("{0}/{1}", year, month));
decimal monthDecimal = month;
allPossibleValues.Add(year + (monthDecimal / MONTH_MULTIPLICATOR));
}
// Start at 1st month in next iteration
minMonth = 1;
}
break;
case Encoding.YEAR:
case Encoding.INTEGER:
IEnumerable <int> intValues = Enumerable.Range((int)minXValue, (int)(maxXValue - minXValue + 1)).Select(value => (int)value);
allPossibleValues = intValues.Select(value => (decimal)value).ToList();
labels = intValues.Select(value => value.ToString()).ToList();
break;
default:
throw new InvalidOperationException();
}
return(labels);
}
private static PreparedDataPoints VerifyAndCompute(IEnumerable <Line> graphLines, DataPointFormat format)
{
// Find the y-values and the labels for those
HashSet <decimal> allDistinctValues = GetDistinctXValuesForAllDataSeries(graphLines.Select(line => line.DataSeries));
List <decimal> sortedValues = new List <decimal>(allDistinctValues);
sortedValues.Sort();
decimal minXValue = sortedValues[0];
decimal maxXValue = sortedValues[sortedValues.Count - 1];
List <decimal> allPossibleXValues = null;
List <string> labels = ComputeLabelNames(format, minXValue, maxXValue, ref allPossibleXValues);
List <DataSet> dataSets = new List <DataSet>(labels.Count);
foreach (Line line in graphLines)
{
DataSeries series = line.DataSeries;
int seriesIdx = 0;
List <decimal?> dataSetValues = new List <decimal?>();
foreach (decimal value in allPossibleXValues)
{
if (seriesIdx < series.DataPoints.Count)
{
DataPoint dataPoint = series.DataPoints[seriesIdx];
decimal dataPointXValue = dataPoint.XValue;
if (dataPointXValue == value)
{
dataSetValues.Add(dataPoint.YValue);
++seriesIdx;
}
else
{
dataSetValues.Add(null);
}
}
else
{
dataSetValues.Add(null);
}
}
if (seriesIdx != series.DataPoints.Count)
{
throw new InvalidOperationException();
}
if (dataSetValues.Count != allPossibleXValues.Count)
{
throw new InvalidOperationException();
}
dataSets.Add(new DataSet(line.Label, line.Color, dataSetValues));
}
return(new PreparedDataPoints(labels, dataSets));
}
