public void PathAnnotation_Diamond()
{
var gv = GraphViewTests.GetGraph();
var path = new PathAnnotation();
path.Points.Add(new PointF(1, 2));
path.Points.Add(new PointF(3, 3));
path.Points.Add(new PointF(6, 2));
path.Points.Add(new PointF(3, 1));
// list the starting point again to close the shape
path.Points.Add(new PointF(1, 2));
gv.Annotations.Add(path);
gv.Redraw(gv.Bounds);
var expected =
@"
│ ..
┤.. ..
┤ ...
0┼┬┬┬┬┬┬┬┬
0 5";
GraphViewTests.AssertDriverContentsAre(expected);
}
public void PathAnnotation_Box()
{
var gv = GraphViewTests.GetGraph();
var path = new PathAnnotation();
path.Points.Add(new PointF(1, 1));
path.Points.Add(new PointF(1, 3));
path.Points.Add(new PointF(6, 3));
path.Points.Add(new PointF(6, 1));
// list the starting point again so that it draws a complete square
// (otherwise it will miss out the last line along the bottom)
path.Points.Add(new PointF(1, 1));
gv.Annotations.Add(path);
gv.Redraw(gv.Bounds);
var expected =
@"
│......
┤. .
┤......
0┼┬┬┬┬┬┬┬┬
0 5";
GraphViewTests.AssertDriverContentsAre(expected);
}
public void PathAnnotation_Diamond()
{
var gv = GraphViewTests.GetGraph();
var path = new PathAnnotation();
path.Points.Add(new PointF(1, 2));
path.Points.Add(new PointF(3, 3));
path.Points.Add(new PointF(6, 2));
path.Points.Add(new PointF(3, 1));
// list the starting point again to close the shape
path.Points.Add(new PointF(1, 2));
gv.Annotations.Add(path);
gv.Redraw(gv.Bounds);
var expected =
@"
│ ..
┤.. ..
┤ ...
0┼┬┬┬┬┬┬┬┬
0 5";
GraphViewTests.AssertDriverContentsAre(expected, output);
// Shutdown must be called to safely clean up Application if Init has been called
Application.Shutdown();
}
public void PathAnnotation_Box()
{
var gv = GraphViewTests.GetGraph();
var path = new PathAnnotation();
path.Points.Add(new PointF(1, 1));
path.Points.Add(new PointF(1, 3));
path.Points.Add(new PointF(6, 3));
path.Points.Add(new PointF(6, 1));
// list the starting point again so that it draws a complete square
// (otherwise it will miss out the last line along the bottom)
path.Points.Add(new PointF(1, 1));
gv.Annotations.Add(path);
gv.Redraw(gv.Bounds);
var expected =
@"
│......
┤. .
┤......
0┼┬┬┬┬┬┬┬┬
0 5";
GraphViewTests.AssertDriverContentsAre(expected, output);
// Shutdown must be called to safely clean up Application if Init has been called
Application.Shutdown();
}
private void SetupLineGraph(DataTable dt, AggregateContinuousDateAxis axis, string countColumnName, int boundsWidth, int boundsHeight)
{
graphView.AxisY.Text = countColumnName;
graphView.GraphColor = Driver.MakeAttribute(Color.White, Color.Black);
var xIncrement = 1f / (boundsWidth / (float)dt.Rows.Count);
graphView.MarginBottom = 2;
graphView.AxisX.Increment = xIncrement * 10;
graphView.AxisX.ShowLabelsEvery = 1;
graphView.AxisX.Text = axis.AxisIncrement.ToString();
graphView.AxisX.LabelGetter = (v) =>
{
var x = (int)v.Value;
return(x < 0 || x >= dt.Rows.Count ? "" : dt.Rows[x][0].ToString());
};
float minY = 0;
float maxY = 1;
var colors = GetColors(dt.Columns.Count - 1);
for (int i = 1; i < dt.Columns.Count; i++)
{
var series = new PathAnnotation()
{
LineColor = colors[i - 1], BeforeSeries = true
};
int row = 0;
foreach (DataRow dr in dt.Rows)
{
// Treat nulls as 0
var yVal = dr[i] == DBNull.Value ? 0 : (float)Convert.ToDouble(dr[i]);
minY = Math.Min(minY, yVal);
maxY = Math.Max(maxY, yVal);
series.Points.Add(new PointF(row++, yVal));
}
graphView.Annotations.Add(series);
}
var yIncrement = 1 / ((boundsHeight - graphView.MarginBottom) / (maxY - minY));
graphView.CellSize = new PointF(xIncrement, yIncrement);
graphView.AxisY.LabelGetter = (v) => FormatValue(v.Value, minY, maxY);
graphView.MarginLeft = (uint)(Math.Max(FormatValue(maxY, minY, maxY).Length, FormatValue(minY, minY, maxY).Length)) + 1;
var legend = GetLegend(dt, boundsWidth, boundsHeight);
for (int i = 1; i < dt.Columns.Count; i++)
{
legend.AddEntry(new GraphCellToRender('.', colors[i - 1]), dt.Columns[i].ColumnName);
}
}
private void SetupSineWave()
{
graphView.Reset();
about.Text = "This graph shows a sine wave";
var points = new ScatterSeries();
var line = new PathAnnotation();
// Draw line first so it does not draw over top of points or axis labels
line.BeforeSeries = true;
// Generate line graph with 2,000 points
for (float x = -500; x < 500; x += 0.5f)
{
points.Points.Add(new PointF(x, (float)Math.Sin(x)));
line.Points.Add(new PointF(x, (float)Math.Sin(x)));
}
graphView.Series.Add(points);
graphView.Annotations.Add(line);
// How much graph space each cell of the console depicts
graphView.CellSize = new PointF(0.1f, 0.1f);
// leave space for axis labels
graphView.MarginBottom = 2;
graphView.MarginLeft = 3;
// One axis tick/label per
graphView.AxisX.Increment = 0.5f;
graphView.AxisX.ShowLabelsEvery = 2;
graphView.AxisX.Text = "X →";
graphView.AxisX.LabelGetter = (v) => v.Value.ToString("N2");
graphView.AxisY.Increment = 0.2f;
graphView.AxisY.ShowLabelsEvery = 2;
graphView.AxisY.Text = "↑Y";
graphView.AxisY.LabelGetter = (v) => v.Value.ToString("N2");
graphView.ScrollOffset = new PointF(-2.5f, -1);
graphView.SetNeedsDisplay();
}
private void SetupLineGraph()
{
graphView.Reset();
about.Text = "This graph shows random points";
var black = Application.Driver.MakeAttribute(graphView.ColorScheme.Normal.Foreground, Color.Black);
var cyan = Application.Driver.MakeAttribute(Color.BrightCyan, Color.Black);
var magenta = Application.Driver.MakeAttribute(Color.BrightMagenta, Color.Black);
var red = Application.Driver.MakeAttribute(Color.BrightRed, Color.Black);
graphView.GraphColor = black;
List <PointF> randomPoints = new List <PointF> ();
Random r = new Random();
for (int i = 0; i < 10; i++)
{
randomPoints.Add(new PointF(r.Next(100), r.Next(100)));
}
var points = new ScatterSeries()
{
Points = randomPoints
};
var line = new PathAnnotation()
{
LineColor = cyan,
Points = randomPoints.OrderBy(p => p.X).ToList(),
BeforeSeries = true,
};
graphView.Series.Add(points);
graphView.Annotations.Add(line);
randomPoints = new List <PointF> ();
for (int i = 0; i < 10; i++)
{
randomPoints.Add(new PointF(r.Next(100), r.Next(100)));
}
var points2 = new ScatterSeries()
{
Points = randomPoints,
Fill = new GraphCellToRender('x', red)
};
var line2 = new PathAnnotation()
{
LineColor = magenta,
Points = randomPoints.OrderBy(p => p.X).ToList(),
BeforeSeries = true,
};
graphView.Series.Add(points2);
graphView.Annotations.Add(line2);
// How much graph space each cell of the console depicts
graphView.CellSize = new PointF(2, 5);
// leave space for axis labels
graphView.MarginBottom = 2;
graphView.MarginLeft = 3;
// One axis tick/label per
graphView.AxisX.Increment = 20;
graphView.AxisX.ShowLabelsEvery = 1;
graphView.AxisX.Text = "X →";
graphView.AxisY.Increment = 20;
graphView.AxisY.ShowLabelsEvery = 1;
graphView.AxisY.Text = "↑Y";
var max = line.Points.Union(line2.Points).OrderByDescending(p => p.Y).First();
graphView.Annotations.Add(new TextAnnotation()
{
Text = "(Max)", GraphPosition = new PointF(max.X + (2 * graphView.CellSize.X), max.Y)
});
graphView.SetNeedsDisplay();
}
