protected virtual GeckoLineChart BuildLinechartData(LineChartArgs args,
IEnumerable <LineChartData> sourceData,
List <DateTime> xAxis,
GeckoValues yAxis)
{
var data = new GeckoLineChart();
for (var i = 0; i < sourceData.Count(); i++)
{
if (i != 0 && (i % args.Sample != 0))
{
continue;
}
// start at the newest and work backwards
var j = sourceData.Count() - i - 1;
var lci = sourceData.ElementAt(j);
xAxis.Add(lci.When);
yAxis.Add(lci.Value);
data.Item.Add(Scale(lci.Value,
args.ScaleUp,
args.ScaleDown,
args.DecimalPlaces).ToString());
}
// finally reverse the data order oldest->newest
data.Item.Reverse();
return(data);
}
public GeckoLineChart GetGeckoboardLineChartForCheckRate(LineChartArgs args)
{
GeckoLineChart data = null;
try
{
var yAxis = new GeckoValues();
var xAxis = new List <DateTime>();
CalculateLinechartSample(args);
DateTime oldestDate;
DateTime newestDate;
CalculateLinechartDateRange(args, out oldestDate, out newestDate);
// get the actual data from the provider and a "zero set" - a set
// of zero values for the entire date range
var dbData = myDataProvider.GetLineChartDataForCheckRate(args);
var zeroData = GenerateLinechartZeroSet(args, oldestDate, newestDate);
// merge the two data sets, using the actual data value where
// available, otherwise use a zero value
var mergedData = MergeLinechartData(dbData, zeroData);
data = BuildLinechartData(args, mergedData, xAxis, yAxis);
CalculateLinechartSettings(args, data, yAxis, xAxis);
}
catch (Exception ex)
{
Logger.Error(Logger.Event.During("GetGeckoboardLineChartForCheckRate")
.Encountered(ex));
throw;
}
return(data);
}
protected void CalculateLinechartSettings(LineChartArgs args,
GeckoLineChart data,
GeckoValues yAxis,
List <DateTime> xAxis)
{
var minY = args.ScaleY
? Scale(yAxis.Min(), args.ScaleUp, args.ScaleDown, args.ScaleYDecimalPlaces)
: Scale(yAxis.Min(), 1, 1, args.ScaleYDecimalPlaces);
var midY = args.ScaleY
? Scale(yAxis.Mid(), args.ScaleUp, args.ScaleDown, args.ScaleYDecimalPlaces)
: Scale(yAxis.Mid(), 1, 1, args.ScaleYDecimalPlaces);
var maxY = args.ScaleY
? Scale(yAxis.Max(), args.ScaleUp, args.ScaleDown, args.ScaleYDecimalPlaces)
: Scale(yAxis.Max(), 1, 1, args.ScaleYDecimalPlaces);
var colourKey = string.Format("linechart.{0}.{1}", args.Site, args.Check);
data.Settings.Colour = myColourPicker.Next(colourKey).ToString();
data.Settings.Y.Add(minY.ToString());
data.Settings.Y.Add(midY.ToString());
data.Settings.Y.Add(maxY.ToString());
var minDate = xAxis.Min();
var maxDate = xAxis.Max();
if (maxDate.Subtract(minDate).TotalDays < 1)
{
data.Settings.X.Add(minDate.ToShortTimeString());
data.Settings.X.Add(minDate.AddMinutes(
maxDate.Subtract(minDate).TotalMinutes / 2).ToShortTimeString());
data.Settings.X.Add(maxDate.ToShortTimeString());
}
else
{
var midMins = maxDate.Subtract(minDate).TotalMinutes / 2;
var midDate = maxDate.Subtract(TimeSpan.FromMinutes(midMins));
data.Settings.X.Add(minDate.ToString(Linechart.X_Axis_DateFormat));
data.Settings.X.Add(midDate.ToString(Linechart.X_Axis_DateFormat));
data.Settings.X.Add(maxDate.ToString(Linechart.X_Axis_DateFormat));
}
}
