/Main/src/DynamicDataDisplay/Common/Auxiliary/IDataSource2DExtensions.cs

  1using System;
  2using System.Collections.Generic;
  3using System.Linq;
  4using System.Text;
  5using Microsoft.Research.DynamicDataDisplay.Charts;
  6using Microsoft.Research.DynamicDataDisplay.DataSources;
  7using System.Windows;
  8using System.Diagnostics.CodeAnalysis;
  9
 10namespace Microsoft.Research.DynamicDataDisplay.Common.Auxiliary
 11{
 12	public static class IDataSource2DExtensions
 13	{
 14		public static Range<double> GetMinMax(this double[,] data)
 15		{
 16			data.VerifyNotNull("data");
 17
 18			int width = data.GetLength(0);
 19			int height = data.GetLength(1);
 20			Verify.IsTrueWithMessage(width > 0, Strings.Exceptions.ArrayWidthShouldBePositive);
 21			Verify.IsTrueWithMessage(height > 0, Strings.Exceptions.ArrayHeightShouldBePositive);
 22
 23			double min = data[0, 0];
 24			double max = data[0, 0];
 25			for (int x = 0; x < width; x++)
 26			{
 27				for (int y = 0; y < height; y++)
 28				{
 29					if (data[x, y] < min)
 30						min = data[x, y];
 31					if (data[x, y] > max)
 32						max = data[x, y];
 33				}
 34			}
 35
 36			Range<double> res = new Range<double>(min, max);
 37			return res;
 38		}
 39
 40		public static Range<double> GetMinMax(this double[,] data, double missingValue)
 41		{
 42			data.VerifyNotNull("data");
 43
 44			int width = data.GetLength(0);
 45			int height = data.GetLength(1);
 46			Verify.IsTrueWithMessage(width > 0, Strings.Exceptions.ArrayWidthShouldBePositive);
 47			Verify.IsTrueWithMessage(height > 0, Strings.Exceptions.ArrayHeightShouldBePositive);
 48
 49			double min = Double.MaxValue;
 50			double max = Double.MinValue;
 51			for (int x = 0; x < width; x++)
 52			{
 53				for (int y = 0; y < height; y++)
 54				{
 55					if (data[x, y] != missingValue && data[x, y] < min)
 56						min = data[x, y];
 57					if (data[x, y] != missingValue && data[x, y] > max)
 58						max = data[x, y];
 59				}
 60			}
 61
 62			Range<double> res = new Range<double>(min, max);
 63			return res;
 64		}
 65
 66		public static Range<double> GetMinMax(this IDataSource2D<double> dataSource)
 67		{
 68			dataSource.VerifyNotNull("dataSource");
 69
 70			return GetMinMax(dataSource.Data);
 71		}
 72
 73		public static Range<double> GetMinMax(this IDataSource2D<double> dataSource, double missingValue)
 74		{
 75			dataSource.VerifyNotNull("dataSource");
 76
 77			return GetMinMax(dataSource.Data, missingValue);
 78		}
 79
 80		public static Range<double> GetMinMax(this IDataSource2D<double> dataSource, DataRect area)
 81		{
 82			if (dataSource == null)
 83				throw new ArgumentNullException("dataSource");
 84
 85			double min = Double.PositiveInfinity;
 86			double max = Double.NegativeInfinity;
 87			int width = dataSource.Width;
 88			int height = dataSource.Height;
 89			var grid = dataSource.Grid;
 90			var data = dataSource.Data;
 91			for (int ix = 0; ix < width; ix++)
 92			{
 93				for (int iy = 0; iy < height; iy++)
 94				{
 95					if (area.Contains(grid[ix, iy]))
 96					{
 97						var value = data[ix, iy];
 98						if (value < min)
 99							min = value;
100						if (value > max)
101							max = value;
102					}
103				}
104			}
105
106			if (min < max)
107				return new Range<double>(min, max);
108			else
109				return new Range<double>();
110		}
111
112
113		public static DataRect GetGridBounds(this Point[,] grid)
114		{
115			double minX = grid[0, 0].X;
116			double maxX = minX;
117			double minY = grid[0, 0].Y;
118			double maxY = minY;
119
120			int width = grid.GetLength(0);
121			int height = grid.GetLength(1);
122			for (int ix = 0; ix < width; ix++)
123			{
124				for (int iy = 0; iy < height; iy++)
125				{
126					Point pt = grid[ix, iy];
127
128					double x = pt.X;
129					double y = pt.Y;
130					if (x < minX) minX = x;
131					if (x > maxX) maxX = x;
132
133					if (y < minY) minY = y;
134					if (y > maxY) maxY = y;
135				}
136			}
137			return new DataRect(new Point(minX, minY), new Point(maxX, maxY));
138		}
139
140		public static DataRect GetGridBounds<T>(this IDataSource2D<T> dataSource) where T : struct
141		{
142			return dataSource.Grid.GetGridBounds();
143		}
144
145		public static DataRect GetGridBounds<T>(this INonUniformDataSource2D<T> dataSource) where T : struct
146		{
147			var xCoordinates = dataSource.XCoordinates;
148			var yCoordinates = dataSource.YCoordinates;
149
150			var xMin = xCoordinates[0];
151			var xMax = xCoordinates[xCoordinates.Length - 1];
152
153			var yMin = yCoordinates[0];
154			var yMax = yCoordinates[yCoordinates.Length - 1];
155
156			var contentBounds = DataRect.FromPoints(xMin, yMin, xMax, yMax);
157			return contentBounds;
158		}
159	}
160}