Function matr

matr(
    matr: ChalkboardMatrix,
    config: {
        context: CanvasRenderingContext2D;
        domain: [number, number];
        lineWidth: number;
        size: number;
        strokeStyle: string;
        x: number;
        y: number;
    },
): number[][]
Plots a 2x2 matrix.
Parameters
- matr: ChalkboardMatrix
  The matrix
- config: {
      context: CanvasRenderingContext2D;
      domain: [number, number];
      lineWidth: number;
      size: number;
      strokeStyle: string;
      x: number;
      y: number;
  }
  - context: CanvasRenderingContext2D
    
    Optional custom canvas context to draw on
  - domain: [number, number]
    
    Domain over which to plot (in units of the matrix, not pixels)
  - lineWidth: number
    
    Stroke width
  - size: number
    
    Scale, defaults to 1, divided by 100 internally for finer control
  - strokeStyle: string
    
    Stroke color
  - x: number
    
    x-offset (canvas translation), defaults to canvas center
  - y: number
    
    y-offset (canvas translation), defaults to canvas center
Returns number[][]
Example
```
const result = Chalkboard.plot.matr([[0, -1], [1, 0]], { domain: [-2, 2] }); // Plots a quarter-turn transformation
```
- Defined in Chalkboard.plot.ts:879