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#339 Mistake in the explanation of cm transform

v1.0 (example)
closed-fixed
nobody
5
2015-08-08
2014-11-06
Kpym
No

In the documentation, the explanation of /tikz/cm says that the transformation is

$
\begin{pmatrix} a & b \\ c & d \end{pmatrix}
\begin{pmatrix} x \\ y \end{pmatrix} 
+
\begin{pmatrix} t_x \\ t_y \end{pmatrix} 
$

but actualy b and c are interchanged, the real transformation is

$
\begin{pmatrix} a & c \\ b & d \end{pmatrix}
\begin{pmatrix} x \\ y \end{pmatrix} 
+
\begin{pmatrix} t_x \\ t_y \end{pmatrix} 
$

By the way, there is another misspelling too :

/tikz/pic action

should be replaced by

/tikz/pic actions

(with s at the end) as shown in the example after the key.

Discussion

  • Christian Feuersänger

    • status: open --> closed-fixed
     
  • Christian Feuersänger

    I confirm the mistake in the cm dokumentation and fixed both issues in the documentation.

    Thanks for the report.

     
  • Kpym

    Kpym - 2015-08-08

    I haven't seen the bug #304 when I posted this one. I think it is the same bug.

     

    Last edit: Kpym 2015-08-08