public void Test_ErrorBar_LineWidth()
{
var plt = new ScottPlot.Plot();
plt.AntiAlias(false, false, false);
// start with default settings
double[] xs = new double[] { 1, 3, 2, 4 };
double[] ys = new double[] { 1, 3, 2, 4 };
double[] xErrNeg = new double[] { .2, .2, .2, .2 };
double[] xErrPos = new double[] { .2, .2, .2, .2 };
double[] yErrNeg = new double[] { 1, 1, 1, 1 };
double[] yErrPos = new double[] { 1, 1, 1, 1 };
var err = new PlottableErrorBars(xs, ys, xErrPos, xErrNeg, yErrPos, yErrNeg)
{
};
plt.Add(err);
var bmp1 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// change the plottable
err.LineWidth += 1;
var bmp2 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// measure what changed
//TestTools.SaveFig(bmp1, "1");
//TestTools.SaveFig(bmp2, "2");
var before = new MeanPixel(bmp1);
var after = new MeanPixel(bmp2);
Console.WriteLine($"Before: {before}");
Console.WriteLine($"After: {after}");
Assert.That(after.IsDarkerThan(before));
}
public void Test_Annotation_ShadowColor()
{
var plt = new ScottPlot.Plot();
plt.AntiAlias(false, false, false);
// start with default settings
var pa = new PlottableAnnotation()
{
label = "Hello", xPixel = 10, yPixel = 10
};
plt.Add(pa);
var bmp1 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// change the plottable
pa.ShadowColor = System.Drawing.Color.Black;
var bmp2 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// measure what changed
//TestTools.SaveFig(bmp1, "1");
//TestTools.SaveFig(bmp2, "2");
var before = new MeanPixel(bmp1);
var after = new MeanPixel(bmp2);
Console.WriteLine($"Before: {before}");
Console.WriteLine($"After: {after}");
Assert.That(after.IsDarkerThan(before));
}
public void Test_Scatter_LineWidth()
{
var plt = new ScottPlot.Plot();
plt.AntiAlias(false, false, false);
// start with default settings
double[] xs = { 1, 2, 3, 4 };
double[] ys = { 1, 4, 9, 16 };
double[] xErr = { .15, .15, .5, .5 };
double[] yErr = { .5, .5, 1, 1 };
var splt = new PlottableScatter(xs, ys, xErr, yErr)
{
};
plt.Add(splt);
var bmp1 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// change the plottable
splt.lineWidth += 1;
var bmp2 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// measure what changed
//TestTools.SaveFig(bmp1, "1");
//TestTools.SaveFig(bmp2, "2");
var before = new MeanPixel(bmp1);
var after = new MeanPixel(bmp2);
Console.WriteLine($"Before: {before}");
Console.WriteLine($"After: {after}");
Assert.That(after.IsDarkerThan(before));
}
public void Test_Text_Alignment()
{
var plt = new ScottPlot.Plot();
plt.AntiAlias(false, false, false);
// start with default settings
var txt = new PlottableText()
{
text = "hello"
};
plt.Add(txt);
var bmp1 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
string hash1 = ScottPlot.Tools.BitmapHash(bmp1);
// change the plottable
txt.alignment = TextAlignment.middleCenter;
var bmp2 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
string hash2 = ScottPlot.Tools.BitmapHash(bmp2);
// measure what changed
//TestTools.SaveFig(bmp1, "1");
//TestTools.SaveFig(bmp2, "2");
Console.WriteLine($"Before: {hash1}");
Console.WriteLine($"After: {hash2}");
Assert.AreNotEqual(hash1, hash2);
}
public void Test_Text_FrameColor()
{
var plt = new ScottPlot.Plot();
plt.AntiAlias(false, false, false);
// start with default settings
var txt = new PlottableText()
{
text = "hello", frame = true, frameColor = System.Drawing.Color.Gray
};
plt.Add(txt);
var bmp1 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// change the plottable
txt.frameColor = System.Drawing.Color.Blue;
var bmp2 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// measure what changed
//TestTools.SaveFig(bmp1, "1");
//TestTools.SaveFig(bmp2, "2");
var before = new MeanPixel(bmp1);
var after = new MeanPixel(bmp2);
Console.WriteLine($"Before: {before}");
Console.WriteLine($"After: {after}");
Assert.That(before.IsGray());
Assert.That(after.IsNotGray());
Assert.That(after.IsMoreBlueThan(before));
}
public void Test_AxisSpan_Alpha()
{
var plt = new ScottPlot.Plot();
plt.AntiAlias(false, false, false);
// start with default settings
var axSpan = new PlottableHSpan()
{
position1 = 1.23, position2 = 2.34
};
plt.Add(axSpan);
var bmp1 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// change the plottable
axSpan.alpha /= 2;
var bmp2 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// measure what changed
//TestTools.SaveFig(bmp1, "1");
//TestTools.SaveFig(bmp2, "2");
var before = new MeanPixel(bmp1);
var after = new MeanPixel(bmp2);
Console.WriteLine($"Before: {before}");
Console.WriteLine($"After: {after}");
Assert.That(after.IsLighterThan(before));
}
public void Test_Text_FontSize()
{
var plt = new ScottPlot.Plot();
plt.AntiAlias(false, false, false);
// start with default settings
var txt = new PlottableText()
{
text = "hello", FontSize = 12
};
plt.Add(txt);
var bmp1 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// change the plottable
txt.FontSize = 36;
var bmp2 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// measure what changed
//TestTools.SaveFig(bmp1, "1");
//TestTools.SaveFig(bmp2, "2");
var before = new MeanPixel(bmp1);
var after = new MeanPixel(bmp2);
Console.WriteLine($"Before: {before}");
Console.WriteLine($"After: {after}");
Assert.That(after.IsDarkerThan(before));
}
public void Test_Bar_ChangingValues()
{
var plt = new ScottPlot.Plot();
plt.AntiAlias(false, false, false);
// start with default settings
double[] ys = new double[] { 1, 3, 2, 4 };
var bar = new PlottableBar(null, ys, null, null)
{
};
plt.Add(bar);
var bmp1 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// change the plottable
bar.ys[0] += 1;
var bmp2 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// measure what changed
//TestTools.SaveFig(bmp1, "1");
//TestTools.SaveFig(bmp2, "2");
var before = new MeanPixel(bmp1);
var after = new MeanPixel(bmp2);
Console.WriteLine($"Before: {before}");
Console.WriteLine($"After: {after}");
Assert.That(after.IsDarkerThan(before));
}
public void Test_ScaleBar_FontColor()
{
var plt = new ScottPlot.Plot();
plt.AntiAlias(false, false, false);
// create plot with generic scalebar settings
plt.PlotSignal(DataGen.Sin(51));
plt.PlotSignal(DataGen.Cos(51));
var sb = new PlottableScaleBar()
{
Width = 5,
Height = .25,
VerticalLabel = "5 V",
HorizontalLabel = "250 ms"
};
plt.Add(sb);
var bmp1 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// customize the scalebar
sb.FontColor = System.Drawing.Color.Blue;
var bmp2 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// measure what changed
//TestTools.SaveFig(bmp1, "1");
//TestTools.SaveFig(bmp2, "2");
var before = new MeanPixel(bmp1);
var after = new MeanPixel(bmp2);
Console.WriteLine($"Before: {before}");
Console.WriteLine($"After: {after}");
Assert.That(after.IsMoreBlueThan(before));
}
public void Test_ScaleBar_Default()
{
var plt = new ScottPlot.Plot();
plt.AntiAlias(false, false, false);
// start plot without scalebar
plt.PlotSignal(DataGen.Sin(51));
plt.PlotSignal(DataGen.Cos(51));
var bmp1 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// add a scalebar
var sb = new PlottableScaleBar()
{
Width = 5,
Height = .25,
VerticalLabel = "5 V",
HorizontalLabel = "250 ms"
};
plt.Add(sb);
var bmp2 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// measure what changed
//TestTools.SaveFig(bmp1, "1");
//TestTools.SaveFig(bmp2, "2");
var before = new MeanPixel(bmp1);
var after = new MeanPixel(bmp2);
Console.WriteLine($"Before: {before}");
Console.WriteLine($"After: {after}");
Assert.That(after.IsDarkerThan(before));
}
public void Test_function_LineStyle()
{
var plt = new ScottPlot.Plot();
plt.AntiAlias(false, false, false);
// start with default settings
double?func(double x) => Math.Sqrt(x);
var funcPlot = new PlottableFunction(func)
{
};
plt.Axis(-1, 1, -.5, 1.5);
plt.Add(funcPlot);
var bmp1 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// change the plottable
funcPlot.lineStyle = LineStyle.Dash;
var bmp2 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// measure what changed
//TestTools.SaveFig(bmp1, "1");
//TestTools.SaveFig(bmp2, "2");
var before = new MeanPixel(bmp1);
var after = new MeanPixel(bmp2);
Console.WriteLine($"Before: {before}");
Console.WriteLine($"After: {after}");
Assert.That(after.IsLighterThan(before));
}
public void Test_RenderingArtifacts_Demonstrate()
{
// Due to a bug in System.Drawing the drawing of perfectly straight lines is
// prone to rendering artifacts (diagonal lines) when anti-aliasing is off.
// https://github.com/swharden/ScottPlot/issues/327
// https://github.com/swharden/ScottPlot/issues/401
var plt = new ScottPlot.Plot(400, 300);
plt.Grid(xSpacing: 2, ySpacing: 2, color: Color.Red);
plt.Axis(-13, 13, -10, 10);
// create conditions to reveal rendering artifact
plt.AntiAlias(false, false, false);
plt.Grid(enableVertical: false);
// save the figure (bmpData + bmpFigure)
TestTools.SaveFig(plt);
// save the data bitmap too
string gfxFilePath = System.IO.Path.GetFullPath("diag.png");
plt.GetSettings(false).bmpData.Save(gfxFilePath, ImageFormat.Png);
Console.WriteLine($"SAVED: {gfxFilePath}");
}
public void Test_AxisLine_LineWidth()
{
var plt = new ScottPlot.Plot();
plt.AntiAlias(false, false, false);
// start with default settings
var axLine = new PlottableHLine()
{
position = 1.23
};
plt.Add(axLine);
var bmp1 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// change the plottable
axLine.lineWidth += 1;
var bmp2 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// measure what changed
//TestTools.SaveFig(bmp1, "1");
//TestTools.SaveFig(bmp2, "2");
var before = new MeanPixel(bmp1);
var after = new MeanPixel(bmp2);
Console.WriteLine($"Before: {before}");
Console.WriteLine($"After: {after}");
Assert.That(after.IsDarkerThan(before));
}
public void Test_ScaleBar_FontBold()
{
// bold fonts are supported on all operating systems so only test on windows
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows) == false)
{
return;
}
var plt = new ScottPlot.Plot();
plt.AntiAlias(false, false, false);
// create plot with generic scalebar settings
plt.PlotSignal(DataGen.Sin(51));
plt.PlotSignal(DataGen.Cos(51));
var sb = new PlottableScaleBar()
{
Width = 5,
Height = .25,
VerticalLabel = "5 V",
HorizontalLabel = "250 ms"
};
plt.Add(sb);
var bmp1 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// customize the scalebar
sb.FontBold = true;
var bmp2 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// measure what changed
//TestTools.SaveFig(bmp1, "1");
//TestTools.SaveFig(bmp2, "2");
var before = new MeanPixel(bmp1);
var after = new MeanPixel(bmp2);
Console.WriteLine($"Before: {before}");
Console.WriteLine($"After: {after}");
Assert.That(after.IsDarkerThan(before));
}
public void Test_Finance_AutoWidth()
{
var plt = new ScottPlot.Plot();
plt.AntiAlias(false, false, false);
// start with default settings
var op = new PlottableOHLC()
{
Candle = true,
ohlcs = new OHLC[]
{
// open, high, low, close, time, timeSpan
new OHLC(273, 275, 264, 265, 1, 1),
new OHLC(267, 276, 265, 274, 4, 1),
new OHLC(277, 280, 275, 278, 7, 1),
new OHLC(267, 276, 265, 274, 10, 1),
}
};
plt.Add(op);
var bmp1 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// change the plottable
op.AutoWidth = true;
var bmp2 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// measure what changed
//TestTools.SaveFig(bmp1, "1");
//TestTools.SaveFig(bmp2, "2");
var before = new MeanPixel(bmp1);
var after = new MeanPixel(bmp2);
Console.WriteLine($"Before: {before}");
Console.WriteLine($"After: {after}");
Assert.That(after.IsDarkerThan(before));
}
public void Test_Text_FontBold()
{
// bold fonts are supported on all operating systems so only test on windows
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows) == false)
{
return;
}
var plt = new ScottPlot.Plot();
plt.AntiAlias(false, false, false);
// start with default settings
var txt = new PlottableText()
{
text = "hello", FontSize = 12
};
plt.Add(txt);
var bmp1 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// change the plottable
txt.FontBold = true;
var bmp2 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// measure what changed
//TestTools.SaveFig(bmp1, "1");
//TestTools.SaveFig(bmp2, "2");
var before = new MeanPixel(bmp1);
var after = new MeanPixel(bmp2);
Console.WriteLine($"Before: {before}");
Console.WriteLine($"After: {after}");
Assert.That(after.IsDarkerThan(before));
}
public void Test_AxisLine_ChangesPosition()
{
var plt = new ScottPlot.Plot();
plt.AntiAlias(false, false, false);
// start with default settings
var axLine = new PlottableHLine()
{
position = 1.23
};
plt.Add(axLine);
var bmp1 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// change the plottable
axLine.position += 1;
var bmp2 = new System.Drawing.Bitmap(plt.GetBitmap(renderFirst: true));
// measure what changed
//TestTools.SaveFig(bmp1, "1");
//TestTools.SaveFig(bmp2, "2");
Assert.AreNotEqual(ScottPlot.Tools.BitmapHash(bmp1), ScottPlot.Tools.BitmapHash(bmp2));
}
