public FeedResult GetData(DateTime thisDate, string dataType)
{
//Initialize variables
values = new List <double>();
List <string> lines;
FeedResult result = new FeedResult();
//First try to get text lines from cache
lines = cacheManager.getDataFromCache(thisDate, dataType);
//If not found, pull from the web feed
if (lines == null)
{
Console.WriteLine("Downloading: " + thisDate.ToString("MM/dd/yyyy"));
lines = GetDataFromURL(thisDate, dataType);
}
else
{
Console.WriteLine("From cache : " + thisDate.ToString("MM/dd/yyyy"));
}
//Process the lines of text
foreach (string line in lines)
{
//Get the 3rd item in the list, add to arraylist
char[] separators = new char[] { ' ' };
string[] words = line.Split(separators, StringSplitOptions.RemoveEmptyEntries);
values.Add(Convert.ToDouble(words[2]));
}
//Report the number of items in the list
result.count = values.Count;
//Now calculate and package the results
//Start with mean, rounded to 2 decimals.
result.mean = values.Average();
//Calculate the median value; first sort the values in ascending order
values.Sort();
//Get the median index as a double
double medianIndex = (double)(values.Count - 1) / 2;
//Check whether median index is fractional or whole, get the value
if (Math.Truncate(medianIndex) == medianIndex)
{
result.median = values[Convert.ToInt32(medianIndex)];
}
else
{
int lowIndex = (Int32)Math.Truncate(medianIndex);
int highIndex = lowIndex + 1;
result.median = ((values[lowIndex] + values[highIndex]) / 2);
}
return(result);
}
static void Main(string[] args)
{
//Declare local date variables
DateTime startDate;
DateTime endDate;
try
{
switch (args.Length)
{
case 1:
//Treat 1 arg as both start and end date
startDate = DateTime.Parse(args[0]);
endDate = DateTime.Parse(args[0]);
break;
case 2:
//Treat 2 args as start and end dates
startDate = DateTime.Parse(args[0]);
endDate = DateTime.Parse(args[1]);
break;
default:
//If wrong number of args, display usage hints and exit
DisplayUsageHints();
return;
}
}
catch (Exception e)
{
Console.WriteLine(e.GetType() + ": " + e.Message);
Console.WriteLine("--------");
DisplayUsageHints();
return;
}
//Check that dates either match, or start is before end
if (DateTime.Compare(startDate, endDate) > 0)
{
Console.WriteLine("End date can't be before start date");
return;
}
//Date range is set; get the data
DateTime thisDate = startDate;
FeedManager fm = new FeedManager();
//Loop from start to end date
while (!thisDate.Equals(endDate.AddDays(1)))
{
try
{
FeedResult windResult = fm.GetData(thisDate, FeedManager.WIND_SPEED);
Console.WriteLine("Wind: " + windResult);
FeedResult baroResult = fm.GetData(thisDate, FeedManager.BARO_PRESSURE);
Console.WriteLine("Baro: " + baroResult);
FeedResult airTempResult = fm.GetData(thisDate, FeedManager.AIR_TEMP);
Console.WriteLine("Temp: " + airTempResult);
Console.WriteLine("---------");
}
catch (Exception e)
{
Console.WriteLine(e.GetType() + ": " + e.Message);
}
thisDate = thisDate.AddDays(1);
}
}