mathml

Generate MathML from symbolic expression

Syntax

chr = mathml(f)

chr = mathml(f,Name,Value)

Description

chr = mathml(f) returns the generated MathML from the symbolic expression f.

chr = mathml(f,Name,Value) uses additional options specified by one or more name-value pair arguments. For example, generate MathML for inline display by specifying DisplayInline as true.

Examples

MathML from Symbolic Expression

Generate MathML from a symbolic expression.

syms x
f = 1/exp(x^2);
chr = mathml(f)

chr =
    '<math xmlns='http://www.w3.org/1998/Math/MathML' display='block'>
       <msup>
         <mo>&ee;</mo>
         <mrow>
           <mo>-</mo>
           <msup>
             <mi>x</mi>
             <mn>2</mn>
           </msup>
         </mrow>
       </msup>
     </math>
     '

Inline Display of MathML

Generate MathML for inline display by specifying DisplayInline as true.

syms x
f = 1/exp(x^2);
chr = mathml(f,'DisplayInline',true)

chr =
    '<math xmlns='http://www.w3.org/1998/Math/MathML'>
       <msup>
         <mo>&ee;</mo>
         <mrow>
           <mo>-</mo>
           <msup>
             <mi>x</mi>
             <mn>2</mn>
           </msup>
         </mrow>
       </msup>
     </math>
     '

Add Tooltips for Symbols to Generated MathML

Use MathML tooltips for units and some special functions to provide more information. Generate tooltips by specifying Tooltips as true.

syms nu x
f = besselj(nu,x);
chr = mathml(f,'Tooltips',true)

chr =
    '<math xmlns='http://www.w3.org/1998/Math/MathML' display='block'>
       <mrow>
         <msub>
           <maction actiontype='tooltip'>
             <mo>J</mo>
             <mtext>besselj</mtext>
           </maction>
           <mi>&nu;</mi>
         </msub>
         <mrow>
           <mo form='prefix'>(</mo>
           <mi>x</mi>
           <mo form='postfix'>)</mo>
         </mrow>
       </mrow>
     </math>
     '

When you use MathML in a web page, then pausing on J displays a tooltip containing besselj.

Modify Generated MathML with Symbolic Preferences

Modify generated MathML by setting symbolic preferences using the sympref function.

Generate the MathML form of the expression π with the default symbolic preference.

sympref('default');
chr = mathml(sym(pi))

chr =
    '<math xmlns='http://www.w3.org/1998/Math/MathML' display='block'>
       <mi>&pi;</mi>
     </math>
     '

Set the 'FloatingPointOutput' preference to true to return symbolic output in floating-point format. Generate the MathML form of π in floating-point format.

sympref('FloatingPointOutput',true);
chr = mathml(sym(pi))

chr =
    '<math xmlns='http://www.w3.org/1998/Math/MathML' display='block'>
       <mn>3.1416</mn>
     </math>
     '

Now change the output order of a symbolic polynomial. Create a symbolic polynomial and set 'PolynomialDisplayStyle' preference to 'ascend'. Generate MathML form of the polynomial sorted in ascending order.

syms x;
poly = x^2 - 2*x + 1;
sympref('PolynomialDisplayStyle','ascend');
chr = mathml(poly)

chr =
    '<math xmlns='http://www.w3.org/1998/Math/MathML' display='block'>
       <mrow>
         <mn>1</mn>
         <mo>-</mo>
         <mrow>
           <mn>2</mn>
           <mo form='infix'>&InvisibleTimes;</mo>
           <mi>x</mi>
         </mrow>
         <mo>+</mo>
         <msup>
           <mi>x</mi>
           <mn>2</mn>
         </msup>
       </mrow>
     </math>
     '

The preferences you set using sympref persist through your current and future MATLAB^® sessions. Restore the default values by specifying the 'default' option.

sympref('default');

Input Arguments

f — Input

symbolic number | symbolic variable | symbolic array | symbolic function | symbolic expression

Input, specified as a symbolic number, variable, array, function, or expression.

Name-Value Pair Arguments

Specify optional comma-separated pairs of Name,Value arguments. Name is the argument name and Value is the corresponding value. Name must appear inside quotes. You can specify several name and value pair arguments in any order as Name1,Value1,...,NameN,ValueN.

Example: mathml(f,'Tooltips',true)

'DisplayInline' — Inline MathML display

false (default) | true

Inline MathML display, specified as the comma-separated pair consisting of 'DisplayInline' and either true or false (default).

'Tooltips' — tooltips

false (default) | true

Tooltips in MathML output, specified as the comma-separated pair consisting of 'Tooltips' and either true or false (default). mathml adds tooltips for units and some special functions.