public RtRaster <double> RunCpuInterpolation(YieldReportData dataPoints, IGeometry dataBoundary)
{
var bounds = new RTBounds(dataBoundary).ToMeters();
var xMax = bounds.MaxX;
var xMin = bounds.MinX;
var yMax = bounds.MaxY;
var yMin = bounds.MinY;
CollectionStats yld = dataPoints.YieldData.Yield;
Stopwatch timer = new Stopwatch();
timer.Start();
var ip = new Interpolator();
var raster = ip.OldInterpolate(yld.data.Select(v => new RtPointZ(v.X, v.Y, (float)v.Z)).ToList(), xMin, xMax, yMin, yMax, 0.0f, 4, 1, 1.0f, 1.0f);
//var raster = CommonServices.CreateHeatMap(yld.data.Select(v => new RtPointZ(v.X,v.Y,(float)v.Z)).ToList(), xMin,yMin,xMax,yMax);
timer.Stop();
var elapsed = timer.ElapsedTicks;
Console.WriteLine("Cpu Interpolation took {0} ms", elapsed / (Stopwatch.Frequency / 1000));
RtRaster <double> rasterDbl = new RtRaster <double>(raster.NumCols, raster.NumRows, raster.Xll, raster.Yll, 1.0, 1);
rasterDbl.SetRasterBand(0, raster.Bands[0].TransformDataBand(v => (double)v));
return(rasterDbl);
}
public RtRaster <double> RunGpuInterpolation(YieldReportData dataPoints, IGeometry dataBoundary)
{
try
{
int cellSize = 1;
var bounds = new RTBounds(dataBoundary).ToMeters();
var xMax = bounds.MaxX;
var xMin = bounds.MinX;
var yMax = bounds.MaxY;
var yMin = bounds.MinY;
var xDist = (int)(xMax - xMin + 1);
var yDist = (int)(yMax - yMin + 1);
//var cost = (xDist * yDist * dataPoints.Count) / (Environment.ProcessorCount * cellSize * cellSize);
var nCols = xDist / cellSize;
var nRows = yDist / cellSize;
CollectionStats yld = dataPoints.YieldData.Yield;
//create host side arrays for input data and boundary and output data
double[] h_datax = yld.DataPoints.Select(pt => RtPoint <double> .LatLonToMeters(pt)).Select(ptz => ptz.X).ToArray();
double[] h_datay = yld.DataPoints.Select(pt => RtPoint <double> .LatLonToMeters(pt)).Select(ptz => ptz.Y).ToArray();
double[] h_dataz = yld.DataPoints.Select(pt => RtPoint <double> .LatLonToMeters(pt)).Select(ptz => ptz.Z).ToArray();
var dataSize = sizeof(double) * h_datax.Length;
Console.WriteLine("Performing interpolation on {0} data points of {1} bytes", h_datax.Length, dataSize);
var cols = Enumerable.Range(0, nCols - 1).ToArray();
var coords = Enumerable.Range(0, nRows).SelectMany(row => cols.Select(col => Tuple.Create(row, col))).ToArray();
double[] h_outputx = coords.Select(coord => xMin + (coord.Item2 * cellSize)).ToArray();
double[] h_outputy = coords.Select(coord => yMin + (coord.Item1 * cellSize)).ToArray();
double[] h_outputz = coords.Select(coord => 0.0).ToArray();
var outputSize = sizeof(double) * h_outputx.Length;
Console.WriteLine("Output Raster has {0} raster points of {1} bytes", h_outputx.Length, outputSize);
double2[] h_boundCoords = dataBoundary.Coordinates.Select(coord => new double2(coord.X, coord.Y)).ToArray();
using (CudaDeviceVariable <double> d_datax = h_datax)
using (CudaDeviceVariable <double> d_datay = h_datay)
using (CudaDeviceVariable <double> d_dataz = h_dataz)
using (CudaDeviceVariable <double> d_outputx = h_outputx)
using (CudaDeviceVariable <double> d_outputy = h_outputy)
using (CudaDeviceVariable <double> d_outputz = h_outputz)
{
const int ThreadsPerBlock = 512;
InterpolateKernel.BlockDimensions = ThreadsPerBlock;
InterpolateKernel.GridDimensions = (h_outputx.Length + ThreadsPerBlock - 1) / ThreadsPerBlock;
Console.WriteLine("Invoke Kernel with Grid Dimensions = {0}", InterpolateKernel.GridDimensions);
Stopwatch timer = new Stopwatch();
timer.Start();
InterpolateKernel.Run(d_datax.DevicePointer, d_datay.DevicePointer, d_dataz.DevicePointer,
d_outputx.DevicePointer, d_outputy.DevicePointer, d_outputz.DevicePointer,
h_outputx.Length, h_datax.Length);
timer.Stop();
var elapsed = timer.ElapsedTicks;
Console.WriteLine("Gpu Interpolation took {0} ms", elapsed / (Stopwatch.Frequency / 1000));
h_outputz = d_outputz;
}
if (h_outputz.All(pt => pt != 0.0))
{
Console.WriteLine("Kernel succeeded");
}
else
{
Console.WriteLine("Kernel failed");
}
var raster = new RtRaster <double>(nCols, nRows, xMin, yMin, cellSize * 2);
var noDataValue = 0.0f;
var rasterBand = RtRasterBand <double> .CreateRasterBand(typeof(double), nCols, nRows, noDataValue, h_outputz);
raster.SetRasterBand(0, rasterBand);
return(raster);
}
catch (Exception ex)
{
ctx.Dispose();
Console.WriteLine(ex.Message + "\nStackTrace: " + ex.StackTrace);
//+
// ex.InnerException == null ? "" :
// String.Format("\n\t{0}\n\tStackTrace: {1}", ex.InnerException.Message,
// ex.InnerException.StackTrace)
return(null);
}
}