Ask an expert. Trust the answer.

Your academic and career questions answered by verified experts

When and why should I use cellfun in Matlab?

Date: 2022-10-17 15:48:05

question regarding the cellfun function in MATLAB.

When / why should I use it, and when may I just as well drop it?

A simple example: Let's say I have a cell a, and I want to find the average of all values in a. 

 

a{1} = [1 2;3 4]; a{2} = [1 2 3;4 5 6; 7 8 9];

My approach would be something like: 

 

mean([a{1}(:); a{2}(:)])

What will the appropriate cellfun version of this be, and is it any better?

I've tried doing something like this, (obviously not working): 

 

mean_a = mean(cellfun(@mean, a,'UniformOutput',0))

Thanks! 

MOST VIEWED QUESTIONS

Expert Answer:

s: 

cellfun is just like looping through the cell matrix and
executing specified function separately on each cell.
It's usually faster than doing the same thing explicitly
in loop, but the basic difference is that its easy to
write and read - its immediately clear what the call is
doing. But you could just as well write the loop yourself.

In your specific case you could use cellfun this way: 

 

mean_a = mean(cellfun(@(x) mean(x(:)), a));

If you have thousands of cells and you want to do something
to each of them you either use a loop or a cellfun
BTW: @(x) means that you want the content of each cell
to be understood as x so that mean(x(:)) gives you what
you want - mean of the whole matrix content of the cell. 

 

Why Matlabhelpers ?

Looking for reliable MATLAB assignment help? Our expert MATLAB tutors deliver high-quality, easy-to-understand solutions tailored to your academic needs. Whether you're studying at Monash University, the University of Sydney, UNSW, or the University of Melbourne, we provide trusted MATLAB assistance to help you excel. Contact us today for the best MATLAB solutions online and achieve academic success!

Submit Assignment Matlab Projects

MATLAB Assignment Help Services

Personalized Tutoring: Get one-on-one guidance from our MATLAB experts. Whether you're tackling basic concepts or advanced algorithms, we provide clear, step-by-step explanations to help you master MATLAB with confidence.

Assignment Assistance: Struggling with tight deadlines or complex assignments? Our team offers end-to-end support, from problem analysis to code development and debugging, ensuring your assignments meet the highest academic standards.

Project Development: Need expert help with your MATLAB research project? We assist in designing and implementing robust solutions, covering project planning, data collection, coding, simulation, and result analysis.

Coursework Support: Enhance your understanding of MATLAB with our comprehensive coursework assistance. We help you grasp lecture concepts, complete lab exercises, and prepare effectively for exams.

Thesis and Dissertation Guidance: Incorporate MATLAB seamlessly into your thesis or dissertation. Our experts provide support for data analysis, modeling, and simulation, ensuring your research is methodologically sound and impactful.

Contact us on WhatsApp for MATLAB help

Contact us on Telegram for MATLAB solutions