Store \pgfmathresult in a variable

Question

The result of \pgfmathparse is automatically stored in \pgfmathresult. Is it possible to store it in an other variable, too?

Martin Scharrer · Accepted Answer · 2011-05-21T22:44:04.390

Use \pgfmathsetmacro\mymacro{...} instead of \pgfmathparse{...}.

From the v2.10 pgfmanual, section 62.1 Commands for Parsing Expressions, page 527:

\pgfmathsetmacro{<macro>}{<expression>}
Defines <macro> as the value of <expression>. The result is a decimal without units.

\pgfmathsetlengthmacro{<macro>}{<expression>}
Defines <macro> as the value of <expression> LaTeX in points.

\pgfmathtruncatemacro{<macro>}{<expression>}
Defines <macro> as the truncated value of <expression>.

In theory you could also say \let\mymacro\pgfmathresult, but I recommend the above macros.

score 6 · Answer 2 · answered May 21 '11 at 21:14

6

I guess with

\edef\myvar{\pgfmathresult}

when the value from \pgfmathparse has been computed. Or \xdef instead of \edef if you need it globally, i.e., outside the TiKZ environment in which the computation is performed.

answered May 21 '11 at 21:14

egreg

1,121,712

1

Note that \pgfmathresult is already fully expand, so I would prefer \let\myvar\pgfmathresult, with \global as prefix if required. – Martin Scharrer May 21 '11 at 22:45
@Martin: Is it possible to define one of the macros in your answer globally? – egreg May 21 '11 at 22:54
No. Adding \global in front of them shouldn't work. – Martin Scharrer May 21 '11 at 23:01

Store \pgfmathresult in a variable

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