/// <summary>
/// Sets the size of the array.
/// </summary>
/// <param name="rows"> The number of rows.</param>
/// <param name="cols"> The number of columns.</param>
/// <remarks> This will only destroy data if you're making it smaller.</remarks>
public void SetSize(int rows, int cols)
{
// TODO: Plotting - copy old data over
data = new double[rows, cols];
// resize the display index
if (displayIndex == null)
displayIndex = new PlotIndex(rows);
else
displayIndex.Resize(rows);
// add extra column names
while (columnNames.Count < cols)
{
columnNames.Add("column" + columnNameCount.ToString());
columnNameCount++;
}
// remove unecessary column names
if (cols < columnNames.Count)
columnNames.RemoveRange(cols, columnNames.Count - cols - 1);
}
/// <summary>
/// Gets the index of points in the given column that fall between min and max.
/// </summary>
/// <param name="col"> </param>
/// <param name="min"> </param>
/// <param name="max"> </param>
/// <returns> </returns>
public PlotIndex GetColumnIndex(int col, double min, double max)
{
if (col < 0 || col > NumColumns)
throw new Exception("Column out of bounds.");
PlotIndex index = new PlotIndex(NumRows);
for (int r=0; r<NumRows; r++)
{
if (!Double.IsNaN(data[r,col]) && (data[r, col] < min || data[r,col] > max))
index[r] = false;
}
return index;
}
/// <summary>
/// Compute the plot geometry.
/// </summary>
public override void ComputeGeometry()
{
base.ComputeGeometry();
_bounds.Reset();
// generate the colors
double[] colorRange; // the range of values that the colors correspond to
Color[] colors; // the colors
PlotIndex colorIndex = null; // the index of points for the current color
if (this[ColumnIndex.Color] < 0) // use the predefined color
{
colorRange = new double[]{0, 0};
colors = new Color[]{_color};
colorIndex = new PlotIndex(dataSet.NumRows);
}
else // generate the values from a color map
{
double min, max; // the min/max of the color column
dataSet.ColumnMinMax(this[ColumnIndex.Color], out min, out max);
colorRange = Bounds.NiceRange(min, max);
colors = colorMap.GetColors(colorRange.Length-1);
}
// generate shapes
double[] shapeRange; // the range of values that the shapes correspond to
PlotShape[] shapes; // the shapes
PlotIndex shapeIndex = null; // the index of points for the current shape
if (this[ColumnIndex.Shape] < 0) // use the predefined shape
{
shapeRange = new double[]{0, 0};
shapes = new PlotShape[]{shape};
shapeIndex = new PlotIndex(dataSet.NumRows);
}
else // use predefined shapes
{
double min, max; // the min/max of the shape column
dataSet.ColumnMinMax(this[ColumnIndex.Shape], out min, out max);
double[] shapeRange_ = Bounds.NiceRange(min, max);
min = shapeRange_[0];
max = shapeRange_[shapeRange_.Length-1];
shapeRange = new double[3]{min, (max+min)/2, max};
shapes = new PlotShape[]{PlotShape.Circle, PlotShape.Square};
}
// generate sizes
PlotIndex sizeIndex = null;
float[] sizes; // the sizes
double[] sizeRange; // the range of values that the size correspond to
if (this[ColumnIndex.Size] < 0) // use the predefined sizes
{
sizeRange = new double[]{0,0};
sizes = new float[]{markerSize};
sizeIndex = new PlotIndex(dataSet.NumRows);
}
else // generate sizes from a range
{
double min, max; // the min/max of the size column
dataSet.ColumnMinMax(this[ColumnIndex.Size], out min, out max);
sizeRange = Bounds.NiceRange(min, max, 2.5);
sizes = new float[sizeRange.Length-1];
for (int i=0; i<sizes.Length; i++)
sizes[i] = (float)2*i + 1f;
}
_displayList = gl.glGenLists(1);
// generate the display list
gl.glNewList(_displayList, gl.GL_COMPILE);
for (int shapeI=0; shapeI<shapes.Length; shapeI++) // cycle through shapes
{
// compute the index for this shape
if (this[ColumnIndex.Shape] >= 0)
shapeIndex = dataSet.GetColumnIndex(this[ColumnIndex.Shape], shapeRange[shapeI], shapeRange[shapeI+1]);
// set the marker shape
SetupShape(shapes[shapeI]);
for (int sizeI=0; sizeI<sizes.Length; sizeI++) // cycle through sizes
{
// compute the index for this size
if (this[ColumnIndex.Size] >= 0)
sizeIndex = dataSet.GetColumnIndex(this[ColumnIndex.Size], sizeRange[sizeI], sizeRange[sizeI+1]);
// begin the rendering
gl.glPointSize(sizes[sizeI]); // set the size
for (int colorI=0; colorI<colors.Length; colorI++) // cycle through colors
{
// compute the index for this color
if (this[ColumnIndex.Color] >= 0)
colorIndex = dataSet.GetColumnIndex(this[ColumnIndex.Color], colorRange[colorI], colorRange[colorI+1]);
colors[colorI].Setup();
PlotIndex thisIndex = dataSet.DisplayIndex.Copy();
thisIndex.Intersect(colorIndex); // apply the color index
thisIndex.Intersect(shapeIndex); // apply the shape index
thisIndex.Intersect(sizeIndex); // apply the size index
// plot the points for this color/shape/size
if (markersVisible)
gl.glBegin(gl.GL_POINTS);
foreach (int r in thisIndex)
{
double x, y, z;
x = dataSet[r, columns[0]];
y = dataSet[r, columns[1]];
z = dataSet[r, columns[2]];
if (Double.IsNaN(x) || Double.IsNaN(y) || Double.IsNaN(z))
continue;
ParentAxes.PlotToWorldSpace.Apply(ref x, ref y, ref z);
if (markersVisible)
gl.glVertex3d(x, y, z);
_bounds.Resize(x, y, z);
}
if (markersVisible)
gl.glEnd();
// plot the line for this color/shape/size
if (lineVisible)
{
gl.glLineWidth(lineWidth);
gl.glBegin(gl.GL_LINE_STRIP);
foreach (int r in thisIndex)
{
double x, y, z;
x = dataSet[r, columns[0]];
y = dataSet[r, columns[1]];
z = dataSet[r, columns[2]];
if (Double.IsNaN(x) || Double.IsNaN(y) || Double.IsNaN(z))
continue;
ParentAxes.PlotToWorldSpace.Apply(ref x, ref y, ref z);
gl.glVertex3d(x, y, z);
}
gl.glEnd();
gl.glLineWidth(1);
}
} // colorI
} // sizeI
} // shapeI
gl.glEndList();
// add legend items
if (ParentAxes.Legend != null)
{
// color legend entries
if (colors.Length > 1)
{
string colorColumn = dataSet.GetColumnName(this[ColumnIndex.Color]);
for (int i = 0; i < colors.Length; i++ )
{
LegendItem item = new LegendItem();
item.Icon.LineWidth = lineWidth;
item.Icon.ShowLine = LineVisible;
item.Icon.ShowMarker = MarkersVisible;
item.Icon.Color = colors[i];
item.Text = String.Format("{0}: {1} to {2}", colorColumn,
colorRange[i], colorRange[i+1]);
if (shapes.Length == 1) // only one shape
item.Icon.MarkerShape = shapes[0];
if (sizes.Length == 1) // only one size
item.Icon.MarkerSize = markerSize;
ParentAxes.Legend.Add(item);
}
}
// shape legend entries
if (shapes.Length > 1)
{
string shapeColumn = dataSet.GetColumnName(this[ColumnIndex.Shape]);
for (int i = 0; i < shapes.Length; i++)
{
LegendItem item = new LegendItem();
item.Icon.LineWidth = lineWidth;
item.Icon.ShowLine = LineVisible;
item.Icon.ShowMarker = MarkersVisible;
item.Text = String.Format("{0}: {1} to {2}", shapeColumn,
shapeRange[i], shapeRange[i + 1]);
item.Icon.MarkerShape = shapes[i];
if (colors.Length == 1) // only one color
item.Icon.Color = colors[0];
if (sizes.Length == 1) // only one size
item.Icon.MarkerSize = markerSize;
ParentAxes.Legend.Add(item);
}
}
// size legend entries
if (sizes.Length > 1)
{
string sizeColumn = dataSet.GetColumnName(this[ColumnIndex.Size]);
for (int i = 0; i < sizes.Length; i++)
{
LegendItem item = new LegendItem();
item.Icon.LineWidth = lineWidth;
item.Icon.ShowLine = LineVisible;
item.Icon.ShowMarker = MarkersVisible;
item.Text = String.Format("{0}: {1} to {2}", sizeColumn,
sizeRange[i], sizeRange[i + 1]);
item.Icon.MarkerSize = sizes[i];
if (colors.Length == 1) // only one color
item.Icon.Color = colors[0];
if (shapes.Length == 1) // only one shape
item.Icon.MarkerShape = shapes[0];
ParentAxes.Legend.Add(item);
}
}
// single legend entry, if nothing varies
if (colors.Length == 1 && shapes.Length == 1 && sizes.Length == 1)
{
LegendItem item = new LegendItem();
item.Icon.LineWidth = lineWidth;
item.Icon.ShowLine = LineVisible;
item.Icon.ShowMarker = MarkersVisible;
item.Text = dataSet.GetColumnName(Columns[2]);
item.Icon.Color = colors[0];
item.Icon.MarkerShape = shapes[0];
item.Icon.MarkerSize = sizes[0];
ParentAxes.Legend.Add(item);
}
}
}