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# The Yoix® Scripting Language

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initmatrix () typedict.Matrix

Initializes this matrix to one that describes the default coordinate system, which has its origin at the upper left corner, positive x to the right, positive y down, and a resolution of 72 dots per inch, and returns this matrix to the caller. The values stored in the sx, shx, tx, sy, shy, and ty fields in the read-only matrix `VM.screen.defaultmatrix` match the values that initmatrix loads in this matrix.

initmatrix can occasionally be a convenient alternative to currentmatrix and setmatrix pair, but there are very important differences so its use should be carefully thought out. We do not use initmatrix much, despite the fact that our example shows how it can simplify code, and we recommend you adopt the same philosophy.
 Example: The program, ```import yoix.*.*; JFrame f = { Graphics graphics = { Color foreground = Color.blue; int linewidth = 72/8; int linecap = yoix.graphics.CAP_ROUND; }; paint(Rectangle rect) { int n; graphics { // "named block" translate(size.width/2, size.height/2); scale(2, .5); for (n = 0; n < 12; n++) { moveto(0, 0); rlineto(1.5*72, 0); rotate(30); } initmatrix(); stroke(); } } }; f.visible = TRUE; ```draws the same picture as our setmatrix example, but using initmatrix meant we were able to eliminate a few lines of code. Return: Matrix See Also: concat, concatmatrix, currentmatrix, dividematrix, dtransform, Graphics, identmatrix, idtransform, invertmatrix, itransform, maptopixel, rotate, scale, setmatrix, shear, transform, translate

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