source code of function inv() in MATLAB

Question

1.00/5 (2 votes)

See more:

Dear experts, i need the source code of this function: inv(Matrix mat) that returns the inverted mat. It's sort of emmergency, i don't have much time. could anybody show me the code?
Thank you in advance.

Posted 12-Oct-13 2:37am

Member 8945248

Add a Solution

3 solutions

Solution 1

1. If you want Matlab source code then ask at the Matlab site, we do not provide code to order.
2. No one here is impressed by you saying "it's an emergency", we have our own priorities.
3. If you don't have much time then you should learn to plan better.

Posted 12-Oct-13 2:52am

Richard MacCutchan

Comments

Andreas Gieriet 12-Oct-13 8:59am

My 5!
Item 3) is "cruel" - I like it :-) (sorry for being so blunt...)
Cheers
Andi

Richard MacCutchan 12-Oct-13 9:14am

Don't apologise, I was also being blunt. People really need to learn that this sort of question cuts no ice.

Member 8945248 12-Oct-13 9:10am

My apologies, Thank you for your guidence.

Solution 2

In addition to Richard MacCutchan's advise, have a look on Google.
For explaining Matrix inversion, see http://en.wikipedia.org/wiki/Invertible_matrix#Methods_of_matrix_inversion[^].
For some implementations see http://math.fullerton.edu/mathews/n2003/InverseMatrixMod.html[^] or many other sources...
Cheers
Andi

Posted 12-Oct-13 3:02am

Andreas Gieriet

Comments

Member 8945248 12-Oct-13 9:11am

Thank you dear Andreas.

Andreas Gieriet 12-Oct-13 9:17am

You are welcome.
I hope it is of any help.
I understand you expected more, but, hey, Mathlab is not open source, how could you dream of getting their sources? Or did you expect some cracked code here?
Cheers
Andi

Member 8945248 12-Oct-13 9:33am

I accept that i made a mistake. It was a hasty situation and i lost that anyway. Since i didn't have time to create an account in mathwork i posted that here which was a mistake. I assumed that somebody may have the code.

Andreas Gieriet 12-Oct-13 11:02am

Respect! Not everyone would openly tell having made a mistake!
Honestly, I'm looking forward to see you again on CP under less pushy circumstances!
Have a good day!
Cheers
Andi

Member 8945248 12-Oct-13 11:10am

Thank you Andi. Sure you will see me, but with more related questions. ;-)
best,

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Albert Holguin · Accepted Answer · 2013-10-15T08:29:00

Whenever I need to convert some algorithms from Matlab to C/C++, I always go through the operations and implement them independently of the rest of the algorithm. This makes the problem a lot easier to handle by breaking it down.

If you look at what inv() does, it's really quite simple, but you have to make some implementation decisions because vectors are treated a bit differently in matlab than they are in the C/C++ world. So you have to bind the problem by deciding how your matrix will be passed to/from the function (what it will "look" like), then simply loop and do your swapping operation.