private void listView_Click(object sender, SelectionChangedEventArgs e)
{
// Companies id = (Companies)e.AddedItems[0];
// string name = id.Symbol;
if (lvUsers.SelectedIndex != -1)
{
string date;
string fileName = @"myplot2.png";
Companies c = (Companies)lvUsers.SelectedItem;
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(String.Format("http://ichart.finance.yahoo.com/table.csv?s={0}&ignore=.csv", c.Symbol));
request.Method = WebRequestMethods.Http.Head;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
response.Close();
if (response.StatusCode != HttpStatusCode.OK)
{
MessageBox.Show("שגיאה: מידע פננסי עבור החברה שנבחרה לא קיים.");
this.Graph.Source = null;
return;
}
}
catch
{
MessageBox.Show("שגיאה: מידע פננסי עבור החברה שנבחרה לא קיים.");
this.Graph.Source = null;
return;
}
//REngine engine;
REngine.SetEnvironmentVariables();
// engine = REngine.GetInstance();
engine.Initialize();
List <string> dates = new List <string>();
List <float> p_list = new List <float>();
for (int i = 14; i > 0; i--)
{
if (DateTime.Now.Subtract(new TimeSpan(i, 0, 0, 0)).DayOfWeek.ToString() != "Sunday" && DateTime.Now.Subtract(new TimeSpan(i, 0, 0, 0)).DayOfWeek.ToString() != "Saturday")
{
date = "" + DateTime.Now.Subtract(new TimeSpan(i, 0, 0, 0)).Year.ToString() + "-" + DateTime.Now.Subtract(new TimeSpan(i, 0, 0, 0)).Month.ToString() + "-" + DateTime.Now.Subtract(new TimeSpan(i, 0, 0, 0)).Day.ToString();
dates.Add(date);
}
}
string temp = "getYahooStockUrl <- function(symbol, start, end, type = \"d\") {\n start <- as.Date(start)\n end <- as.Date(end)\n url <-\"http://ichart.finance.yahoo.com/table.csv?s=%s&a=%d&b=%s&c=%s&d=%d&e=%s&f=%s&g=%s&ignore=.csv\"\n sprintf(url,\ntoupper(symbol),\nas.integer(format(start, \"%m\")) - 1,\nformat(start, \"%d\"),\nformat(start, \"%Y\"),\nas.integer(format(end, \"%m\")) - 1, \nformat(end, \"%d\"),\nformat(end, \"%Y\"),\ntype)} \ndata<- read.csv(getYahooStockUrl(\"" + c.Symbol + "\", \"" + dates.First().ToString() + "\", \"" + dates.Last().ToString() + "\"),\nstringsAsFactors = FALSE)";
DataFrame obj = engine.Evaluate(temp).AsDataFrame();
//engine.Evaluate("plot(data$Close,type=\"l\",col=\"red\")");
if (File.Exists(fileName))
{
this.Graph.Source = null;
File.Delete(fileName);
}
//CharacterVector uVector = engine.CreateCharacterVector(u_date_list_h);
engine.SetSymbol("date", obj["Date"]);
//CharacterVector pVector = engine.CreateCharacterVector(help);
engine.SetSymbol("value", obj["Close"]);
//engine.SetSymbol("obj", obj);
CharacterVector fileNameVector = engine.CreateCharacterVector(new[] { fileName });
engine.SetSymbol("fileName", fileNameVector);
engine.Evaluate("png(filename=fileName, width=6, height=6, units='in', res=100)");
engine.Evaluate("date <- as.Date(date)");
engine.Evaluate("family <- as.factor(data[,4])");
engine.Evaluate("par(bg = \"transparent\")");
engine.Evaluate("plot(value~date,pch=16, col=family, ann=FALSE)");
obj.Close();
engine.Evaluate("dev.off()");
//engine.Dispose();
var bitmap = new BitmapImage();
var stream = File.OpenRead(fileName);
bitmap.BeginInit();
bitmap.CacheOption = BitmapCacheOption.OnLoad;
bitmap.StreamSource = stream;
bitmap.EndInit();
stream.Close();
stream.Dispose();
this.Graph.Source = bitmap;
//MessageBox.Show(Convert.ToString(listView.SelectedIndices[0]));
}
}