public DashboardGraphString GetGraphsString()
{
var graphs = new DashboardGraphString();
if (_context.Dashboards.Count() > 0)
{
// Přepověď teploty a srážek
if (_context.WeatherForecast != null)
{
var weatherForecastId = _context.WeatherForecast.LastOrDefault().Id;
var hourlyForecast = _context.WeatherForecastHourlyState.Where(t => t.WeatherForecastId == weatherForecastId)
.OrderBy(m => m.DateTime);
// Graf venkovní teploty a srážek
var cmlChart = new CMLChart();
//cmlChart.Label = "Předpověď počasí";
cmlChart.AsixXPaint = new SKPaint {
TextSize = 10, Color = SKColors.White
};
cmlChart.AsixYPaint = new SKPaint {
TextSize = 12, Color = SKColors.White
};
cmlChart.BarPaint = new SKPaint {
TextSize = 10, Color = SKColors.White
};
cmlChart.LinePaint = new SKPaint {
TextSize = 10, Color = SKColors.White
};
cmlChart.TitlePaint = new SKPaint {
TextSize = 14, Color = SKColors.White
};
cmlChart.BorderPaint = new SKPaint {
TextSize = 10, Color = SKColors.Black
};
var horly = hourlyForecast.Select(t => t.DateTime.Hour.ToString()).ToArray();
cmlChart.XAsix = new CMLChartXAsix(horly, CMLValuesType.Hourly);
var temperatureForecastValues = hourlyForecast.Select(t => t.Temperature).ToArray();
var precipitationForecastValues = hourlyForecast.Select(t => t.Rain + t.Snow).ToArray();
cmlChart.YAsixs = new List <CMLChartYAsix>();
cmlChart.YAsixs.Add(new CMLChartYAsix("Teplota (°C)", true, Color.Black, Color.Black, temperatureForecastValues, 1, PresentationType.Line, Location.Left, true));
cmlChart.YAsixs.Add(new CMLChartYAsix("Srážky (mm)", true, Color.Black, Color.Black, precipitationForecastValues, 2, PresentationType.Bar, Location.Right, false));
// Nastavení maximalní hodnoty na ose Y pro výše srážek. Ostaní min/max jsou defaultně min/max hodnoty
cmlChart.YAsixs.Where(t => t.Id == 1).FirstOrDefault().MinValue = Math.Min(0, temperatureForecastValues.Min());;
cmlChart.YAsixs.Where(t => t.Id == 2).FirstOrDefault().MaxValue = 4;
// :TODO: nastavit hodnoty velikosti obrázku grafu
int width = 400;
int height = 200;
var chartImageBitmap = cmlChart.GetBitmap(width, height);
var bitmapConvert = new BitmapConvert(chartImageBitmap);
graphs.OutdoorTemperatureGraphString = bitmapConvert.GetBitmapByString();
}
}
return(graphs);
}
