[Xy-pic] Color option help needed
Michael Barr
barr at math.mcgill.ca
Sat Dec 7 03:03:51 CET 2013
Assume my preamble contains the lines
\input xy
\xyoption{arrow}
\xyoption{color}
\UseCrayolaColors
Where can I place [red] in the line
$$\xy \ar@{->}^{f}(20,0) \endxy$$
to generate a red arrow with a black f?
While I am at it, why can't I say \xyoption[arrow,color] without getting
an error message that "arrow," is not a valid option?
Michael
--
Every gun that is made, every warship launched, every rocket fired
signifies, in the final sense, a theft from those who hunger and are not
fed, those who are cold and are not clothed. -Dwight D. Eisenhower
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