Documentation

# latex

LaTeX form of symbolic expression

## Syntax

chr = latex(S)

## Description

example

chr = latex(S) returns the LaTeX form of the symbolic expression S.

## Examples

collapse all

Find the LaTeX form of the symbolic expressions x^2 + 1/x and sin(pi*x) + alpha.

syms x phi chr = latex(x^2 + 1/x) chr = latex(sin(pi*x) + phi)
chr = '\frac{1}{x}+x^2' chr = '\phi +\sin\left(\pi \,x\right)'

Find the LaTeX form of the symbolic matrix M.

syms x M = [sym(1)/3 x; exp(x) x^2] chrM = latex(M)
M = [ 1/3, x] [ exp(x), x^2] chrM = '\left(\begin{array}{cc} \frac{1}{3} & x\\ {\mathrm{e}}^x & x^2 \end{array}\right)' 

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

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

sympref('default'); chr = latex(sym(pi))
chr = '\pi '

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

sympref('FloatingPointOutput',true); chr = latex(sym(pi))
chr = '3.1416'

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

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

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');

For $x$ and $y$ from $-2\pi$ to $2\pi$, plot the 3-D surface $y\mathrm{sin}\left(x\right)-x\mathrm{cos}\left(y\right)$. Store the axes handle in a by using gca. Display the axes box by using a.Box and set the tick label interpreter to latex.

Create the x-axis ticks by spanning the x-axis limits at intervals of pi/2. Convert the axis limits to precise multiples of pi/2 using round and get the symbolic tick values in S. Display the ticks by setting the XTick property of a to S. Create the LaTeX labels for the x-axis by using arrayfun to apply latex to S and then concatenating $. Display the labels by assigning them to the XTickLabel property of a. Repeat these steps for the y-axis. Set the x- and y-axes labels and the title using the latex interpreter. syms x y f = y.*sin(x)-x.*cos(y); fsurf(f,[-2*pi 2*pi]) a = gca; a.TickLabelInterpreter = 'latex'; a.Box = 'on'; a.BoxStyle = 'full'; S = sym(a.XLim(1):pi/2:a.XLim(2)); S = sym(round(vpa(S/pi*2))*pi/2); a.XTick = double(S); a.XTickLabel = strcat('$',arrayfun(@latex, S, 'UniformOutput', false),'$'); S = sym(a.YLim(1):pi/2:a.YLim(2)); S = sym(round(vpa(S/pi*2))*pi/2); a.YTick = double(S); a.YTickLabel = strcat('$',arrayfun(@latex, S, 'UniformOutput', false),'$'); xlabel('x','Interpreter','latex'); ylabel('y','Interpreter','latex'); zlabel('z','Interpreter','latex'); title(['$' latex(f) '$for$x$and$y$in$[-2\pi,2\pi]\$'],'Interpreter','latex') ## Input Arguments

collapse all

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