搜索讨论

Audace NSHIMIRIMANA
上次活动时间: 2024-12-10，23:34

Improvement of Energy Management Strategy (EMS) of Plug In Hybrid Electric Vehicles (PHEV) Using Rule-based Control Strategy and Signal Processing / ITS

Watt's Up with Electric Vehicles?EV modeling Ecosystem (Eco-friendly Vehicles), V2V Communication and V2I communications thereby emitting zero Emissions to considerably reduce NOx ,Particulates matters,CO2 given that Combustion is always incomplete and will always be.

Reduction of gas emissions outside to the environment will improve human life span ,few epidemic diseases and will result in long life standard

Jason
上次活动时间: 2024-12-2，21:06

New book announcement: "Data-driven method for dynamic systems"

I am very excited to share my new book "Data-driven method for dynamic systems" available through SIAM publishing: https://epubs.siam.org/doi/10.1137/1.9781611978162

This book brings together modern computational tools to provide an accurate understanding of dynamic data. The techniques build on pencil-and-paper mathematical techniques that go back decades and sometimes even centuries. The result is an introduction to state-of-the-art methods that complement, rather than replace, traditional analysis of time-dependent systems. One can find methods in this book that are not found in other books, as well as methods developed exclusively for the book itself. I also provide an example-driven exploration that is (hopefully) appealing to graduate students and researchers who are new to the subject.

Each and every example for the book can be reproduced using the code at this repo: https://github.com/jbramburger/DataDrivenDynSyst

Hope you like it!

Image Analyst
上次活动时间: 2024-11-8

My favorite image processing books

My favorite image processing book is The Image Processing Handbook by John Russ. It shows a wide variety of examples of algorithms from a wide variety of image sources and techniques. It's light on math so it's easy to read. You can find both hardcover and eBooks on Amazon.com Image Processing Handbook

There is also a Book by Steve Eddins, former leader of the image processing team at Mathworks. Has MATLAB code with it. Digital Image Processing Using MATLAB

You might also want to look at the free online book http://szeliski.org/Book/

Book Program
上次活动时间: 2024-11-15

Welcome to the MATLAB & Simulink Book Discussion Channel!

Hello! The MathWorks Book Program is thrilled to welcome you to our discussion channel dedicated to books on MATLAB and Simulink. Here, you can:

Promote Your Books: Are you an author of a book on MATLAB or Simulink? Feel free to share your work with our community. We’re eager to learn about your insights and contributions to the field.
Request Recommendations: Looking for a book on a specific topic? Whether you're diving into advanced simulations or just starting with MATLAB, our community is here to help you find the perfect read.
Ask Questions: Curious about the MathWorks Book Program, or need guidance on finding resources? Post your questions and let our knowledgeable community assist you.

We’re excited to see the discussions and exchanges that will unfold here. Whether you're an expert or beginner, there's a place for you in our community. Let's embark on this journey together!

goc3
上次活动时间: 2024-12-3，13:54

Congratulations to William!

I was browsing the MathWorks website and decided to check the Cody leaderboard. To my surprise, William has now solved 5,000 problems. At the moment, there are 5,227 problems on Cody, so William has solved over 95%. The next competitor is over 500 problems behind. His score is also clearly the highest, approaching 60,000.

Please take a moment to congratulate @William.

J.K043006
上次活动时间: 2024-8-29

"corr" malfunctioning in cody

I've been working on some matrix problems recently(Problem 55225)

and this is my code

It turns out that "Undefined function 'corr' for input arguments of type 'double'." However, should't the input argument of "corr" be column vectors with single/double values? What's even going on there?

David
上次活动时间: 2024-8-8

Visual PDE

A library of runnable PDEs. See the equations! Modify the parameters! Visualize the resulting system in your browser! Convenient, fast, and instructive.

Visit https://visualpde.com/explore.html

Athanasios Paraskevopoulos
上次活动时间: 2024-12-10，6:40

Looking for Beginner Courses on Drone Programming

Hi everyone,

I've recently joined a forest protection team in Greece, where we use drones for various tasks. This has sparked my interest in drone programming, and I'd like to learn more about it. Can anyone recommend any beginner-friendly courses or programs that teach drone programming?

I'm particularly interested in courses that focus on practical applications and might align with the work we do in forest protection. Any suggestions or guidance would be greatly appreciated!

Thank you!

Muhammad
上次活动时间: 2024-8-26

What do you like most about MATLAB?

"What are your favorite features or functionalities in MATLAB, and how have they positively impacted your projects or research? Any tips or tricks to share?

DH
上次活动时间: 2024-8-8

Can someone tell me what's wrong with this code? This is a problem from Cody. For example, when n=3, the output should be the matrix [1 2 2 3 3 3]

function ans = your_fcn_name(n)
n;
j=sum(1:n);
a=zeros(1,j);
 for i=1:n
   a(1,((sum(1:(i-1))+1)):(sum(1:(i-1))+i))=i.*ones(1,i);     
 end
 disp

Marisa
上次活动时间: 2024-8-26

Can't click Roll the Dice!

I am trying to earn my Intro to MATLAB badge in Cody, but I cannot click the Roll the Dice! problem. It simply is not letting me click it, therefore I cannot earn my badge. Does anyone know who I should contact or what to do?

https://blogs.mathworks.com/community/2015/02/26/lets-code-make-a-cody-video/

Ned Gulley
上次活动时间: 2024-6-13

Make a video: "How I Solved It"

Twitch built an entire business around letting you watch over someone's shoulder while they play video games. I feel like we should be able to make at least a few videos where we get to watch over someone's shoulder while they solve Cody problems. I would pay good money for a front-row seat to watch some of my favorite solvers at work. Like, I want to know, did Alfonso Nieto-Castonon just sit down and bang out some of those answers, or did he have to think about it for a while? What was he thinking about while he solved it? What resources was he drawing on? There's nothing like watching a master craftsman at work.

I can imagine a whole category of Cody videos called "How I Solved It". I tried making one of these myself a while back, but as far as I could tell, nobody else made one.

Here's the direct link to the video: https://www.youtube.com/watch?v=hoSmO1XklAQ

I hereby challenge you to make a "How I Solved It" video and post it here. If you make one, I'll make another one.

Ned Gulley
上次活动时间: 2024-6-25

What's your opinion of the Ans Hack?

The Ans Hack is a dubious way to shave a few points off your solution score. Instead of a standard answer like this

function y = times_two(x)
  y = 2*x;
end

you would do this

function ans = times_two(x)
  2*x;
end

The ans variable is automatically created when there is no left-hand side to an evaluated expression. But it makes for an ugly function. I don't think anyone actually defends it as a good practice. The question I would ask is: is it so offensive that it should be specifically disallowed by the rules? Or is it just one of many little hacks that you see in Cody, inelegant but tolerable in the context of the surrounding game?

Incidentally, I wrote about the Ans Hack long ago on the Community Blog. Dealing with user-unfriendly code is also one of the reasons we created the Head-to-Head voting feature. Some techniques are good for your score, and some are good for your code readability. You get to decide with you care about.

Athanasios Paraskevopoulos
上次活动时间: 2024-6-9

Discovering an Excellent Resource on Ordinary Differential Equations

While searching the internet for some books on ordinary differential equations, I came across a link that I believe is very useful for all math students and not only. If you are interested in ODEs, it's worth taking the time to study it.

A First Look at Ordinary Differential Equations by Timothy S. Judson is an excellent resource for anyone looking to understand ODEs better. Here's a brief overview of the main topics covered:

Introduction to ODEs: Basic concepts, definitions, and initial differential equations.
Methods of Solution:

Separable equations
First-order linear equations
Exact equations
Transcendental functions

Applications of ODEs: Practical examples and applications in various scientific fields.
Systems of ODEs: Analysis and solutions of systems of differential equations.
Series and Numerical Methods: Use of series and numerical methods for solving ODEs.

This book provides a clear and comprehensive introduction to ODEs, making it suitable for students and new researchers in mathematics. If you're interested, you can explore the book in more detail here: A First Look at Ordinary Differential Equations.

goc3
上次活动时间: 2024-6-7

Trick: Easy Digit Manipulation

There are a host of problems on Cody that require manipulation of the digits of a number. Examples include summing the digits of a number, separating the number into its powers, and adding very large numbers together.

If you haven't come across this trick yet, you might want to write it down (or save it electronically):

digits = num2str(4207) - '0'

That code results in the following:

digits =
     4     2     0     7

Now, summing the digits of the number is easy:

sum(digits)
ans =
    13

Chen Lin
上次活动时间: 2024-10-1

Welcome to the Cody Discussion Channel! Please Read Before Posting

Hello and a warm welcome to everyone! We're excited to have you in the Cody Discussion Channel. To ensure the best possible experience for everyone, it's important to understand the types of content that are most suitable for this channel.

Content that belongs in the Cody Discussion Channel:

Tips & tricks: Discuss strategies for solving Cody problems that you've found effective.
Ideas or suggestions for improvement: Have thoughts on how to make Cody better? We'd love to hear them.
Issues: Encountering difficulties or bugs with Cody? Let us know so we can address them.
Requests for guidance: Stuck on a Cody problem? Ask for advice or hints, but make sure to show your efforts in attempting to solve the problem first.
General discussions: Anything else related to Cody that doesn't fit into the above categories.

Content that does not belong in the Cody Discussion Channel:

Comments on specific Cody problems: Examples include unclear problem descriptions or incorrect testing suites.
Comments on specific Cody solutions: For example, you find a solution creative or helpful.

Please direct such comments to the Comments section on the problem or solution page itself.

We hope the Cody discussion channel becomes a vibrant space for sharing expertise, learning new skills, and connecting with others.

Oge Marques
上次活动时间: 2024-10-29

New book announcement: "Image Processing Recipes in MATLAB"

📚 New Book Announcement: "Image Processing Recipes in MATLAB" 📚

I am delighted to share the release of my latest book, "Image Processing Recipes in MATLAB," co-authored by my dear friend and colleague Gustavo Benvenutti Borba.

This 'cookbook' contains 30 practical recipes for image processing, ranging from foundational techniques to recently published algorithms. It serves as a concise and readable reference for quickly and efficiently deploying image processing pipelines in MATLAB.

Gustavo and I are immensely grateful to the MathWorks Book Program for their support. We also want to thank Randi Slack and her fantastic team at CRC Press for their patience, expertise, and professionalism throughout the process.

___________