/// <summary>
/// Draws the graphs and saves them to local files
/// </summary>
public void DrawGraphs()
{
StringBuilder log = new StringBuilder();
log.AppendLine("starting DrawGraphs..");
try
{
List<Station> stations = Station.ReadListOfStations(StationXmlFile);
List<Channel> channels = Channel.ReadFromXml(StationXmlFile);
DataManager m = DataManager.CreateDefault();
DateTime end = DateTime.Now.Date.AddHours(DateTime.Now.Hour);
int interval = ReadIntervalFromConfig();
DateTime start = end.AddDays(interval * (-1));
TimeSeries ts = new TimeSeries(start, end);
TimeSeries curTs;
List<TimeSeries> tslist = new List<TimeSeries>(4);
ChartEngine eng = ChartEngine.FromConfigFile(StationXmlFile, GraphDir);
ChartLabelInfo chi = new ChartLabelInfo();
Channel curCh;
chi.UnitsName = "mm";
chi.Copyright = "Data: KFGG PřF UK Praha";
chi.ChannelName = "hladina";
string fileName;
List<Channel> stch;
List<Channel> chTypeList;
List<string> labelList = new List<string>();
Hashtable stHash = new Hashtable();
foreach (Station st in stations)
{
stch = Channel.FindByStation(channels, st.Id);
chi.StationName = st.Label;
//add channels to hashtable
//the hashtable now contains lists of multiple channels
stHash.Clear();
foreach (Channel ch in stch)
{
if (stHash.ContainsKey(ch.ChType))
{
((List<Channel>)stHash[ch.ChType]).Add(ch);
}
else
{
stHash.Add(ch.ChType, new List<Channel>(4));
((List<Channel>)stHash[ch.ChType]).Add(ch);
}
}
m.LocalDataDir = LocalDataDir;
foreach (DictionaryEntry de in stHash)
{
chTypeList = (List<Channel>)de.Value; //list of channels of same type
if (chTypeList.Count == 1)
{
curCh = chTypeList[0];
fileName = curCh.ChType + "-" + st.Name;
chi.ChannelName = curCh.ChLabel;
chi.UnitsName = curCh.Unit;
m.LoadObservationsFromFile(curCh.StId, curCh, start, end, ts);
//m.LoadObservations(curCh.StId, curCh, start, end, ts);
eng.CreateChart(ts, chi, curCh.ChType, fileName);
}
else if (chTypeList.Count > 1)
{
tslist.Clear();
labelList.Clear();
foreach (Channel ch in chTypeList)
{
curTs = new TimeSeries(start, end);
m.LoadObservationsFromFile(ch.StId, ch, start, end, curTs);
tslist.Add(curTs);
labelList.Add(ch.ChLabel);
}
chi.ChannelName = chTypeList[0].ChLabel;
if (chi.ChannelName.IndexOf(" ") >= 0)
{
chi.ChannelName = chi.ChannelName.Remove(chi.ChannelName.LastIndexOf(" "));
}
chi.UnitsName = chTypeList[0].Unit;
fileName = chTypeList[0].ChType + "-" + st.Name;
eng.CreateChart(tslist, chi, chTypeList[0].ChType, labelList, fileName);
}
}
}
}
catch (Exception ex)
{
log.AppendLine("DrawGraphs ERROR - " + ex.Source + " " + ex.Message);
}
finally
{
log.AppendLine("finished DrawGraphs..");
Logger logger = new Logger(logFile);
logger.WriteMessage(log.ToString());
}
}
//plot chart titles and other text description, setup the axes etc.
private void SetupChart(ITimeSeries ts, ChartLabelInfo chartText, string chType, GraphPane pane)
{
//Station st = ts.Station;
//Variable var = ts.Variable;
DateTime start = ts.Start;
DateTime end = ts.End;
DrawTitle(pane, chartText.StationName, chartText.ChannelName, start, end);
SetupAxis(pane, chType, chartText, start, end);
SetupGrid(pane, chType);
SetupLegend(pane);
}
/// <summary>
/// Overloaded version --- draws the chart for multiple time series (max.3)
/// </summary>
/// <param name="tsList"></param>
/// <param name="chList"></param>
/// <param name="file"></param>
public void CreateChart(List<TimeSeries> tsList, ChartLabelInfo chli, string chartType,
List<string> chNames, string file)
{
Bitmap bmp;
GraphPane pane = SetupGraphPane();
SetupChart(tsList[0], chli, chartType, pane);
PlotMultiChart(tsList, chNames, pane);
bmp = ExportGraph(pane);
string filePath = Path.Combine(_dir, file + ".png");
bmp.Save(filePath, System.Drawing.Imaging.ImageFormat.Png);
bmp.Dispose();
//draws the 'thumb' image
DrawThumb(pane, filePath.Replace(".png", "-m.png"));
}
private void SetupAxis(GraphPane myPane, string chartType, ChartLabelInfo chText,
DateTime minDate, DateTime maxDate)
{
//setup font for axis name and tick marks text
int scaleFontSize = 16;
int titleFontSize = 18;
// X axis
ZedGraph.Axis myXAxis = myPane.XAxis;
myXAxis.Type = AxisType.Date;
myXAxis.Scale.Min = XDate.DateTimeToXLDate(minDate);
myXAxis.Scale.Max = XDate.DateTimeToXLDate(maxDate);
myXAxis.Scale.FontSpec.Size = scaleFontSize;
myXAxis.Scale.Format = "dd.MM";
myPane.XAxis.Title.FontSpec.Size = titleFontSize;
// Y axis
ZedGraph.Axis myYAxis = myPane.YAxis;
myYAxis.Scale.FontSpec.Size = scaleFontSize;
myYAxis.Title.Text = chText.ChannelName + " (" + chText.UnitsName + ")";
myYAxis.Title.FontSpec.Size = titleFontSize;
// data Copyright
myPane.XAxis.Title.Text = chText.Copyright;
// Y axis - setup for water stage
if (chartType == "hla" || chartType == "rad" || chartType == "sra")
{
myYAxis.Scale.Min = 0;
}
if (chartType == "vlh")
{
myYAxis.Scale.Max = 100;
}
// Y2 axis - setup for cumulative precipitation
if (chartType == "sra")
{
myYAxis.Title.Text = "srážky (mm/h)";
ZedGraph.Axis myY2Axis = myPane.Y2Axis;
myY2Axis.Scale.Min = 0;
myY2Axis.Scale.FontSpec.Size = scaleFontSize;
myY2Axis.Title.Text = "suma srážek (mm)";
myY2Axis.Title.FontSpec.Size = titleFontSize;
myY2Axis.IsVisible = true;
}
}
/// <summary>
/// Creates a chart of given type from the time series
/// </summary>
/// <param name="ts"></param>
/// <param name="labels"></param>
/// <param name="chartType"></param>
/// <returns></returns>
public void CreateChart(ITimeSeries ts, ChartLabelInfo chartText, string chartType, string file)
{
Bitmap bmp;
GraphPane pane = SetupGraphPane();
SetupChart(ts, chartText, chartType, pane);
PlotChartForSensor(ts, pane, chartType);
if (ts.Count == 0 || Math.Abs(ts.MaxValue - ts.MinValue) < 0.001)
{
AddText(pane,"čidlo mimo provoz");
}
bmp = ExportGraph(pane);
string filePath = Path.Combine(_dir , file + ".png");
bmp.Save(filePath, System.Drawing.Imaging.ImageFormat.Png);
//DrawThumb(bmp, file);
bmp.Dispose();
//draws the 'thumb' image
//DrawThumb2(ts, chartType, filePath.Replace(".png", "-m.png"));
DrawThumb(pane, filePath.Replace(".png", "-m.png"));
}
