Monday, May 10, 2010
ASTEX - A JavaScript App for Displaying Mathematics on the Web
Check out the app at http://astex-math-on-web.googlecode.com
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\begin{bold}What is ASTEX?\end{bold}
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\begin{bold}ASTEX \end{bold} is an ascii/tex-like mathematical typesetting system for the web.
It works completely in the user's web browser and uses a very simple human readable markup language.
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\begin{bold}What web browsers does it work with?\end{bold}
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\begin{bold}ASTEX \end{bold} has been tested on the latest versions of following web browers:
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\begin{itemize[list-style-type:square;]}
\item \exLink{http://www.mozilla.com/firefox|Mozilla Firefox}
\item \exLink{http://www.microsoft.com/windows/internet-explorer/default.aspx|Internet Explorer}
\item \exLink{http://www.google.com/chrome|Google Chrome}
\item \exLink{http://www.apple.com/safari|Apple Safari}
\item \exLink{http://www.opera.com|Opera} (latest edition)
\end{itemize}
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\begin{bold}What can I use it for?\end{bold}
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\begin{itemize[list-style-type:square;]}
\item Display Mathematical Text (including equations and arrays)
\item Draw 2D and 3D Graphs
\item Highlight Computer Syntax
\item Simple LaTeX Formatting
\item Create a Quiz
\item Create an Online Document with navigation and search functions
\end{itemize}
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\newline `y=1/x qquad` $sum_{n=1}^{oo} 1/n$ ` qquad [ [1,0,0],[0,1,0],[0,0,1] ]`
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`{:
[ int_0^pi sin x dx , = , (-cos x) , |_{x=0}^{x=pi} , ] ,
[ , = , -cos(pi) , hide{1} - , hide{1} [-cos(0)] ] ,
[ , = , -(-1) , hide{1} - , hide{1} [-1] ] ,
[ , = , hide{111} 1 , hide{1} + , hide{1} 1 ] ,
[ , = , , hide{1} 2 , ]
:}`
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The mathematical markup is rather simple. For instance, the equation `y=1/x` was
created by inserting the following text into the html document:
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\begin{code}
BRUSH:astex-graph
CODE:`y = 1 / x`
\end{code}
and the summation $sum_{n=1}^{oo} 1/n$ was
created by inserting the following text into the html document:
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\begin{code}
BRUSH:astex-graph
CODE:$sum_{n=1}^{oo} 1/n$
\end{code}
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2D Graphs can be drawn using rectangular, polar, and parametric functions,
with the ability to shade/fill an area between functions.
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3D Graphs can be drawn using rectangular, cylindrical, spherical coordinates systems
as well as drawing vector-valued functions, with the ability to add rotation controls.
3D Graphs can use either a Right-Handed or Left-Handed Coordinate System, as well as
optional graph rotation controls.
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\begin{graph}
width = 250 ; height = 250 ; ymin = -2 ; ymax = 2 ; bgcolor = yellow ;
stroke = 2 ;
color = orange ;
fillplot ( plot ( `y=sin(x)` , 0 , pi ) plot ( `y=0` , 0 , pi ) ) ;
color = gray ;
axes = yes ;
color = red ;
plot ( `y=sin(x)` , -2pi , 2pi ) ;
color = black ;
mtext( `int_0^pi sin x dx` , [-3,1.2] , 0.5 , 0.1 ) ;
\end{graph}
\begin{graph}
width=250; height=250; dim=3; bgcolor=yellow;
xmin=-1; xmax=1; ymin=-1; ymax=1; zmin=-1; zmax=1;
controls=yes;
color=black;
axes=yes;
axeslabels=x,y,z;
surfacecolor ( red , blue ) ;
partition ( 20 , 20 , 4 ) ;
plot3D ( cyl , `z=r^2` ) ;
\end{graph}
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The markup language for graphs is very simple. For example, the 3D paraboloid above
was created by inserting the following text into the html document:
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\begin{code}
BRUSH:astex-graph
CODE:
\begin{graph} \cn
\ct width=250; height=250; dim=3; bgcolor=yellow; \cn
\ct xmin=-1; xmax=1; ymin=-1; ymax=1; zmin=-1; zmax=1; \cn
\ct controls=yes; \cn
\ct color=black; \cn
\ct axes=yes; \cn
\ct axeslabels=x,y,z; \cn
\ct surfacecolor ( red , blue ) ; \cn
\ct partition ( 20 , 20 , 4 ) ; \cn
\ct plot3D ( cyl , `z=r^2` ) ; \cn
\end{graph}
\end{code}
Try it for yourself in the sandbox below.
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\sandbox{}
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\begin{center} \logo{} \end{center}
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