How to output a decimal format in the use of command Latex?

Hi, there? I tried to convert a matrix (calculated by Matlab) to a LaTex format such that I can directly apply it to my LaTex document, I used the _ * Latex*_ command, but the output is not decimal format, how to make its output is in decimal format?

The code and its corresponding output is shown as follows:

 W =

      0.4237    0.3373    0.2390         0
      0.6603    0.3397         0         0
      0.6877         0         0    0.3123
           0         0    0.6181    0.3819

>> latex_table = latex(sym(W))

latex_table =

\left(\begin{array}{cccc} \frac{4237}{10000} & \frac{3373}{10000} & \frac{239}{1000} & 0\\ \frac{6603}{10000} & \frac{3397}{10000} & 0 & 0\\ \frac{6877}{10000} & 0 & 0 & \frac{3123}{10000}\\ 0 & 0 & \frac{6181}{10000} & \frac{3819}{10000} \end{array}\right)

Answer 1

[Star Strider]

Use the vpa funciton:

latex_table = latex(sym(vpa(W)))

latex_table = \left(\begin{array}{cccc} 0.4237 & 0.3373 & 0.239 & 0\\ 0.6603 & 0.3397 & 0 & 0\\ 0.6877 & 0 & 0 & 0.3123\\ 0 & 0 & 0.6181 & 0.3819 \end{array}\right)

I’m no LaTeX expert, but from my experience, you have to begin and end your LaTeX calls with $.

[li]

Yes, this is what I wanted, thanks a lot.

[Star Strider]

My pleasure.

[li]

Hi, something strange happens, when I choose another matrix,

Q =

      0.4078    0.3697    0.2225         0
      0.7332    0.2668         0         0
      0.6479         0    0.0024    0.3497
           0         0    0.6100    0.3900

then performing same command as before, it becomes

latex_table = latex(vpa(sym(Q)))

latex_table =

\left(\begin{array}{cccc} 0.40780571599985959707623806025367 & 0.36965314538767768404170510621043 & 0.2225411386124627188820568335359 & 0\\ 0.73323426571309668897669098441838 & 0.26676573428534372522946682693146 & 0 & 0\\ 0.64791060477789841343110310845077 & 0 & 0.0023620938268284746158753861777768 & 0.34972730139527302695157118250791\\ 0 & 0 & 0.60999199579579754804115054866998 & 0.39000800420264281065385603142204 \end{array}\right)

it adds some additional digits at the end of the original number, how can I just preserve 4 digits as before. Thanks.

[Star Strider]

It shouldn’t.

To solve that, use the digits function to specify the default number of digits the vpa function uses:

digits(4)
latex_table = latex(vpa(sym(Q)))

That will work.

[li]

Yes, you are genius. Thanks.

[Star Strider]

My pleasure!