Scatter Plot: ArgumentNullException when YError is set but XError is null #1237
Description
Bug Report
Issue: If I create a scatter plot, set x and y data series and then set the yError information but not xError information (because I only want vertical error bars), I get an ArgumentNullException:
System.ArgumentNullException
HResult=0x80004003
Message=Value cannot be null. (Parameter 'second')
Source=System.Linq
StackTrace:
at System.Linq.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument)
at System.Linq.Enumerable.Zip[TFirst,TSecond,TResult](IEnumerable`1 first, IEnumerable`1 second, Func`3 resultSelector)
at ScottPlot.Plottable.ScatterPlot.GetAxisLimits() in C:\dev\ScottPlot\src\ScottPlot\Plottable\ScatterPlot.cs:line 187
at ScottPlot.Settings.<>c.<AxisAutoX>b__53_4(IPlottable x) in C:\dev\ScottPlot\src\ScottPlot\Settings.cs:line 361
at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.ToArray()
at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
at ScottPlot.Settings.AxisAutoX(Int32 xAxisIndex, Double margin) in C:\dev\ScottPlot\src\ScottPlot\Settings.cs:line 357
at ScottPlot.Settings.AxisAutoUnsetAxes() in C:\dev\ScottPlot\src\ScottPlot\Settings.cs:line 268
at ScottPlot.Plot.Render(Bitmap bmp, Boolean lowQuality, Double scale) in C:\dev\ScottPlot\src\ScottPlot\Plot\Plot.Render.cs:line 29
at ScottPlot.Plot.Render(Int32 width, Int32 height, Boolean lowQuality, Double scale) in C:\dev\ScottPlot\src\ScottPlot\Plot\Plot.Render.cs:line 165
at ScottPlot.Plot.Render(Boolean lowQuality) in C:\dev\ScottPlot\src\ScottPlot\Plot\Plot.Render.cs:line 148
at ScottPlotTests.TestTools.GetLowQualityBitmap(Plot plt) in C:\dev\ScottPlot\src\tests\TestTools.cs:line 12
at ScottPlotTests.PlottableRenderTests.Scatter.Test_Scatter_ChangeOnlyYErrorData() in C:\dev\ScottPlot\src\tests\PlottableRenderTests\Scatter.cs:line 83
Reproducing:
var plt = new ScottPlot.Plot();
double[] xs = { 1, 2, 3, 4 };
double[] ys = { 1, 4, 9, 16 };
double[] yErr = { .5, .5, 1, 1 };
// set errorY but NOT errorX
var splt = new ScatterPlot(xs, ys, errorY: yErr) { };System Details
- ScottPlot Version: 4.1.17, but also on the tip of master cloned from GitHub on 9/2/2021
- Operating System: Windows 10
- Application Type: console
- .NET Version: .NET 5.0
NOTE: I have a PR incoming which adds a simple test and then does the 1 character fix.