Doug’s MATLAB Video Tutorials

August 27th, 2009

Basics: Implementing a formula in MATLAB

 This video will demonstrate how to implement a formula in MATLAB. In the video, we will make a function out of the formula. The function will take a scalar (single number) or a vector. We want to make the function take either a scalar or a vector so that you do not have to loop through calling the function. This is not for speed, but for the simplicity and readability of the code. This vectorization is done by means of array division ( ./ ) and array multiplication ( .* ). These operations do division and multiplication on an element by element basis.

By Doug Hull

20:31 UTC | Posted in Format: Video, Level: Basic | Permalink |

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4 Responses to “Basics: Implementing a formula in MATLAB”

  1. Matt Fig replied on August 29th, 2009 at 04:40 UTC :

    Hey Doug,

    What’s twits.txt, some kind of ML hit-list?

    :-)

  2. dhull replied on August 31st, 2009 at 17:03 UTC :

    Matt!

    Nice catch. That is actually a list of twitter comments that I post once a day to Twitter.com. It is a very short MATLAB example (less than 140 characters including the tag #MATLAB)

    Take a look at the feed here:
    http://twitter.com/matlabDoug

    Thanks for keeping me on my toes!

    -doug

  3. Ismael replied on October 27th, 2009 at 17:12 UTC :

    I whould like to know how to show in a GUI window a formula, i mean a formula like the one you have in the first snapshot of this video tutorial, not the graphical representation.
    And i would like to know which kind of element in the GUI i need to use. Thanks in Advance

  4. dhull replied on November 2nd, 2009 at 16:10 UTC :

    @Ismael,

    You can use the TeX and LaTeX parts of MATLAB for some formulas. For the one above, that was just a screenshot of an e-mail the user sent me.

    Doug

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