public void MultiBarSeriesAddValues_WrongNumber()
{
// user asks for 3 bars per category
var series = new MultiBarSeries(3, 7, 1);
var ex = Assert.Throws <ArgumentException>(() => series.AddBars("Cars", '#', 1));
Assert.Equal("Number of values must match the number of bars per category (Parameter 'values')", ex.Message);
}
private void MultiBarGraph()
{
graphView.Reset();
about.Text = "Housing Expenditures by income thirds 1996-2003";
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;
var series = new MultiBarSeries(3, 1, 0.25f, new [] { magenta, cyan, red });
var stiple = Application.Driver.Stipple;
series.AddBars("'96", stiple, 5900, 9000, 14000);
series.AddBars("'97", stiple, 6100, 9200, 14800);
series.AddBars("'98", stiple, 6000, 9300, 14600);
series.AddBars("'99", stiple, 6100, 9400, 14950);
series.AddBars("'00", stiple, 6200, 9500, 15200);
series.AddBars("'01", stiple, 6250, 9900, 16000);
series.AddBars("'02", stiple, 6600, 11000, 16700);
series.AddBars("'03", stiple, 7000, 12000, 17000);
graphView.CellSize = new PointF(0.25f, 1000);
graphView.Series.Add(series);
graphView.SetNeedsDisplay();
graphView.MarginLeft = 3;
graphView.MarginBottom = 1;
graphView.AxisY.LabelGetter = (v) => '$' + (v.Value / 1000f).ToString("N0") + 'k';
// Do not show x axis labels (bars draw their own labels)
graphView.AxisX.Increment = 0;
graphView.AxisX.ShowLabelsEvery = 0;
graphView.AxisX.Minimum = 0;
graphView.AxisY.Minimum = 0;
var legend = new LegendAnnotation(new Rect(graphView.Bounds.Width - 20, 0, 20, 5));
legend.AddEntry(new GraphCellToRender(stiple, series.SubSeries.ElementAt(0).OverrideBarColor), "Lower Third");
legend.AddEntry(new GraphCellToRender(stiple, series.SubSeries.ElementAt(1).OverrideBarColor), "Middle Third");
legend.AddEntry(new GraphCellToRender(stiple, series.SubSeries.ElementAt(2).OverrideBarColor), "Upper Third");
graphView.Annotations.Add(legend);
}
private void SetupMultiBarSeries(DataTable dt, string countColumnName, int boundsWidth, int boundsHeight)
{
int numberOfBars = dt.Columns.Count - 1;
var colors = GetColors(numberOfBars).ToArray();
var mediumStiple = '\u2592';
graphView.GraphColor = Driver.MakeAttribute(Color.White, Color.Black);
// Configure legend
var legend = GetLegend(dt, boundsWidth, boundsHeight);
for (int i = 1; i < dt.Columns.Count; i++)
{
legend.AddEntry(new GraphCellToRender(mediumStiple, colors[i - 1]), dt.Columns[i].ColumnName);
}
// Configure multi bar series
var barSeries = new MultiBarSeries(numberOfBars, numberOfBars + 1, 1, colors);
float min = 0;
float max = 1;
foreach (DataRow dr in dt.Rows)
{
var label = dr[0].ToString();
if (string.IsNullOrWhiteSpace(label))
{
label = "<Null>";
}
var vals = dr.ItemArray.Skip(1)
.Select(v => v == DBNull.Value ? 0 : (float)Convert.ToDouble(v)).ToArray();
barSeries.AddBars(label, mediumStiple, vals);
foreach (var val in vals)
{
min = Math.Min(min, val);
max = Math.Max(max, val);
}
}
// Configure Axis, Margins etc
// make sure whole graph fits on axis
float yIncrement = (max - min) / (boundsHeight - 2 /*MarginBottom*/);
// 1 bar per row of console
graphView.CellSize = new PointF(1, yIncrement);
graphView.Series.Add(barSeries);
graphView.MarginBottom = 2;
graphView.MarginLeft = (uint)(Math.Max(FormatValue(max, min, max).Length, FormatValue(min, min, max).Length)) + 1;
// work out how to space x axis without scrolling
graphView.AxisY.Increment = yIncrement * 5;
graphView.AxisY.ShowLabelsEvery = 1;
graphView.AxisY.LabelGetter = (v) => FormatValue(v.Value, min, max);
graphView.AxisY.Text = countColumnName;
graphView.AxisX.Increment = numberOfBars + 1;
graphView.AxisX.ShowLabelsEvery = 1;
graphView.AxisX.Increment = 0;
graphView.AxisX.Text = dt.Columns[0].ColumnName;
}
public void TestRendering_MultibarSeries()
{
GraphViewTests.InitFakeDriver();
var gv = new GraphView();
gv.ColorScheme = new ColorScheme();
// y axis goes from 0.1 to 1 across 10 console rows
// x axis goes from 0 to 20 across 20 console columns
gv.Bounds = new Rect(0, 0, 20, 10);
gv.CellSize = new PointF(1f, 0.1f);
gv.MarginBottom = 1;
gv.MarginLeft = 1;
var multibarSeries = new MultiBarSeries(2, 4, 1);
//nudge them left to avoid float rounding errors at the boundaries of cells
foreach (var sub in multibarSeries.SubSeries)
{
sub.Offset -= 0.001f;
}
gv.Series.Add(multibarSeries);
FakeHAxis fakeXAxis;
// don't show axis labels that means any labels
// that appaer are explicitly from the bars
gv.AxisX = fakeXAxis = new FakeHAxis()
{
Increment = 0
};
gv.AxisY = new FakeVAxis()
{
Increment = 0
};
gv.Redraw(gv.Bounds);
// Since bar series has no bars yet no labels should be displayed
Assert.Empty(fakeXAxis.LabelPoints);
multibarSeries.AddBars("hey", 'M', 0.5001f, 0.5001f);
fakeXAxis.LabelPoints.Clear();
gv.Redraw(gv.Bounds);
Assert.Equal(4, fakeXAxis.LabelPoints.Single());
multibarSeries.AddBars("there", 'M', 0.24999f, 0.74999f);
multibarSeries.AddBars("bob", 'M', 1, 2);
fakeXAxis.LabelPoints.Clear();
gv.Redraw(gv.Bounds);
Assert.Equal(3, fakeXAxis.LabelPoints.Count);
Assert.Equal(4, fakeXAxis.LabelPoints[0]);
Assert.Equal(8, fakeXAxis.LabelPoints[1]);
Assert.Equal(12, fakeXAxis.LabelPoints [2]);
string looksLike =
@"
│ MM
│ M MM
│ M MM
│ MM M MM
│ MM M MM
│ MM M MM
│ MM MM MM
│ MM MM MM
┼──┬M──┬M──┬M──────
heytherebob ";
GraphViewTests.AssertDriverContentsAre(looksLike);
}