[whatwg] Canvas transform() and matrix element notation

[David Flanagan]

The spec describes the transform() method as follows:

> The transform(m11, m12, m21, m22, dx, dy) method must multiply the current transformation matrix with the matrix described by:
> 
> m11	m21	dx
> m12	m22	dy
> 0	0	1

The first number in these argument names is the column number and the 
second is the row number.  This surprises me, and I want to check that 
it is not an inadvertent error:

1) Wikipedia says (http://en.wikipedia.org/wiki/Matrix_multiplication) 
that the convention is to list row numbers first

2) Java's java.awt.geom.AffineTransform class also lists the row index 
first, as in the following javadoc excerpt:

>         [ x']   [  m00  m01  m02  ] [ x ]   [ m00x + m01y + m02 ]
>         [ y'] = [  m10  m11  m12  ] [ y ] = [ m10x + m11y + m12 ]
>         [ 1 ]   [   0    0    1   ] [ 1 ]   [         1         ]

It would be nice if this spec was not inconsistent with other usage. 
Even changing the argument names to neutral a,b,c,d,dx,dy would be 
better than what is there currently.

	David