PdfExporter not supported Cyrillic

[vitalii-vov]

Hello.
I'm trying to generate a PDF document from a graph using the PdfExporter class.

var exporter = new PdfExporter { Width = width, Height = height, Background = background };
exporter.Export(model, stream);

One of the axes contains Cyrillic characters

var yAxis = new LinearAxis
{
    Position = AxisPosition.Left,
    Title = "FHR, уд/мин" // <- Cyrillic symbols
};

Garbage is displayed instead of characters in the document

I tried to solve this with the DefaultFont property, like here oxyplot/oxyplot#955
But it doesn't seem to work for xamarin?

[VisualMelon]

Which PDF exporter are you using? The one in the core library has poor unicode support, and it is generally better to use the one provided in OxyPlot.SkiaSharp which is a more complete implementation.

[vitalii-vov]

I am using PdfRenderer included in OxyPlot.Xamarin.Forms

If we use OxyPlot.SkiaSharp.PdfRenderer we will get an error:

Type OxyPlot.Xamarin.iOS.CoreGraphicsRenderContext has invalid vtable method slot 7 with method OxyPlot.RenderContextBase:DrawLine (System.Collections.Generic.IList`1<OxyPlot.ScreenPoint>,OxyPlot.OxyColor,double,OxyPlot.EdgeRenderingMode,double[] ,OxyPlot.LineJoin)

This error occurs when the application starts, since the regular OxyPlot.Xamarin.Forms library is used to display graphs
I tried to do this before, but because of this error, nothing worked for me.