Tag Archives: matlab
Investigating a Failed Unit Test for My App
After I added a new UI control to my web app, in a live stream recently, I ran my full set of unit tests and one failed. So I need to investigate why and address.
Features covered in this code-along style video include:
Follow me (@stuartmcgarrity) if you want to be notified via Twitter when I post.
[bcvid id=”6309855909112″]
Play the video in full screen mode for a better viewing…
Apple Silicon 対応の MATLAB（ベータ版）で遊んでみる！
※この投稿は 2022 年 5 月 5 日に The MATLAB blog (Mike Croucher) に投稿されたものの抄訳です。ベータ版の利用期限は 8 月31日まで。MathWorks アカウントだけでどなたでも利用可能です。ダウンロードはこちらからどうぞ！
Apple が新しい ARM ベースのプロセッサの最初のバージョンである M1 チップを発表したのが 2020 年 11 月。界隈では大きな話題になりました。この新しいハードウェアでいつも使っているソフトウェアを試したい！と思うのが人情ですが、小さな問題がありました。
M1 対応の MATLAB がない・・
MATLAB、Simulink、Simscape のような複雑なソフトウェアを新しい CPU アーキテクチャに移植するには、かなりの時間を要します。それこそ何十人年という単位です。もちろん Apple はこのことを理解していて、2005 年の PowerPC から Intel への移行の際に行ったように、Rosetta 2 を用意してくれていました。Intel プロセッサをターゲットにしたソフトウェアも、
An Interesting, and Perhaps New, Matrix
I do not recall having seen this matrix before, but I will not be surprised to learn that somebody else already knows all about it, especially if that person’s name is Nick.
Contents
I’ve been investigating the matrices generated by this elegant one-liner.
Q = @(n) (-n:n).^2 + (-n:n)’.^2;
The Q is for “quadratic”.
The middle column contains the squares of the integers from -n to n. So does the middle row. The apostrophe summons singleton expansion. The resulting matrix has order 2*n+1. Here is Q(5).
Q5 = Q(5)
Q5 =
50
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2022 ライトニングトーク・ポスター発表まとめ記事
こんにちは．道家です．そろそろ子どもたちの夏休みの時期ですが，休み中の楽しみを企画してはいるものの状況が変わるかもしれないのでプラン B，プラン C なども考えなくてはならなく頭を悩ませている今日この頃です．プラン C は家でゴロゴロですが．．．
さて，MATLAB EXPO Japan 2022 はもう遠い昔の事のような気がしますね．すでにこのブログでも MATLAB EXPO にまつわる投稿をいくつかしています．
MATLAB Expo Japan 2022 へのご参加ありがとうございます！
プログラミングコンテスト in MATLAB EXPO2022！！
MATLAB でつくる HOME MADE MRI 発表者へ突撃☆インタビュー
今日はライトニングトークとポスター発表のまとめ記事を書きたいと思います．今年のライトニングトークもほとんどが YouTube の MATLAB Japan チャンネルに掲載されています．過去のライトニングトークとまとめた
How to use IMSPLIT to split a color image into component images
Home Made Magnetic Resonance Imaging
Listen in as Yuki Kamatani interviews a man who built his own MRI!
Hi, I’m Yuki Kamatani, an application engineer in our Osaka office. My specialty is in systems engineering and Model-Based Design related products in power electronics applications.
Today, I would like to introduce @yashiro_ld-san. He is running his “hobby” project to build a home-made MRI. Yashiro-san gave a presentation titled “Desktop MRI – HOME MADE MRI with MATLAB” at our community event at MATLAB Expo (Lightning Talks). The recording (in Japanese) is available on YouTube. You can also check the detail of his project on his blog page in English: Home Made MRI.
Yashiro-san and I have been “Geek Friends” on Twitter for a while now. I am delighted to have had the opportunity to interview…
Linear Algebra in MATLAB: Trying out AMD’s AOCL
In R2022a, MathWorks started shipping AMD’s AOCL alongside Intel’s MKL in MATLAB. This article explains what these are and why you might care about them.
BLAS and LAPACK
A lot of modern technical computing is made possible by the BLAS and LAPACK libraries. You may not have heard of them but I’m almost certain you’ve used them. Have you ever multiplied two dense matrices together using MATLAB? If so, you are a BLAS user. Computed the eigenvalues or SVD of a dense matrix? Yes? You’re a LAPACK user. Not a user of MATLAB but you’ve done these operations in Python or R? You’re probably users of these libraries too.
BLAS and LAPACK are at the heart of many matrix-based calculations and so, as you might imagine, they are taken very seriously by the company who develops the MATrix LABoratory! When MATLAB first started using LAPACK back in 2000, for example, Cleve Moler himself
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Requirements Verification and Validation for an Autonomous Driving Scenario
In today’s post, Akshra Ramakrishnan will talk about how to write functional requirements for a driving scenario made in Driving Scenario Designer, and write test cases to verify and validate these requirements. Over to you, Akshra..
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MATLAB でつくる HOME MADE MRI 発表者へ突撃☆インタビュー
今日はアプリケーションエンジニアの鎌谷さん（@ykamataniMWJ）による投稿です。
こんにちは。大阪オフィスに生息するアプリケーションエンジニアの鎌谷でございます。普段は主にシステムズエンジニアリングに関する製品群や、パワーエレクトロニクスアプリケーションにおける MBD 関連製品等のご支援をしております。
今回は５月に開催された MATALB EXPO ライトニングトークにご登壇いただいたやしろさん（@yashiro_ld ）のインタビューを実施いたしましたのでその内容を記事にいたしました。
実は私とやしろさんは Twitter でちょっと前からお話させていただいているオタク友達でいらっしゃいますので、今回お仕事としてインタビューさせていただけてとっても嬉しいと思っているところです。
MATLAB EXPO ライトニングトーク
ライトニングトークは MATLAB EXPO のサブイベントとして実施されています。MATLAB を使った面白いことや楽しい企画、意外な活用法などをショートセッションでご発表いただくコーナーです。
我々としても企業の皆さんや研究者の皆さんだけでなく、面白いものを作りたい！という”アツい”モチベーションをお持ちの方と仲良くなったり、
やしろさんは「MATLAB でつくるデスクトップ MRI~HOME MADE MRI~」というタイトルでご発表いただきました。
今回はそのやしろさんに色々とご質問をさせていただきました！
さっそくそのインタビューの様子をご確認ください。
インタビュー
お忙しい中インタビューに応じてくださいましてありがとうございます！@ykamataniMWJ です！Twitter ではオタク友達としてお付き合いさせて頂いてるのに、こんな形でインタビューすることになるなんて…
R2022a was MathWorks biggest release ever
Every day, over 5000 MathWorkers start their work day thinking ‘How can I contribute to the acceleration of engineering and science today?’ It’s a wonderful thing to be part of and the 18 months that I’ve been here have been some of the most fun and exciting of my ~20 year career. I’m not the only one who feels this way, MathWorks was recently ranked by LinkedIn as one of the top 20 companies in Technology and Information in the US for example. MathWorks are always hiring so do consider joining us if you are planning your next adventure.
R2022a – More updates than any other release
One of the company’s activities is a new release of MATLAB, Simulink and over 100 toolboxes and other products every 6 months. It’s a huge amount of work and in a recent meeting I overheard someone casually mention that R2022a was MathWorks biggest release ever. No one was making a big deal out of this though, the team was simply getting on with the task
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Pausing and Manually Modifying The Data in a Long Running Script
Here I want to change the behavior of a long running script, by pausing it and manually changing the value of one of the variables. This lets the program continue to run, but in a different way, and without having to restart it.
Features covered in this code-along style video include:
Pausing code
Follow me (@stuartmcgarrity) if you want to be notified via Twitter when I post.
[bcvid id=”6308460739112″]
Play the video in full screen mode for a better viewing…
AI in the news: what to know, what to ignore
There is talk recently about AI becoming self-aware. Let’s talk about it from an engineering perspective: what you need to know and what this means to you.
The claim and the technology
The technology behind the trend is Transformer Models: a neural network architecture that was trained on many words and sentences and will predict the next word in a sentence. The world of transformers has become very popular: these are models that can understand relationships and trends in text and other sequential data. The end application can be anything from sentiment analysis to image captioning to object recognition.
One of the architectures in the news is Google’s Language Model for Dialogue Applications (LaMDA) which, according to Google’s blog can “engage in a free-flowing way about a seemingly endless number of topics.” This is because the input data used to train the model was dialogue-based, and the model was trained to…
Dave’s MATLAB Shooter
Will‘s pick this week is Dave’s MATLAB Shooter(data) by David Buckingham.
This submission is way back in 2010, but it has somehow dodged the Pick of the Week…till now. This is an Atari-style vertical scrolling shooter built entirely in MATLAB. And though it was designed more than a decade ago, it still runs in the latest release of MATLAB. The submission’s resiliency is a testament to the quality of Dave’s code and the forward compatibility of MATLAB. The game was a wee bit sluggish on my laptop, but I was still able to take down a few enemies before biting the bullet.
Let us know what you think …
American Solar Challenge at MIT
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Unifying MATLAB and Simulink: A User Story Part 5
Unifying MATLAB and Simulink: A User Story Part 1: Parameterizing a model with MATLAB objectsUnifying MATLAB and Simulink: A User Story Part 2: The slPart class, block template and data variantsUnifying MATLAB and Simulink: A User Story Part 3 :Controlling
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The Soma Cube, Again
Piet Hein (1905-1996) was an extraordinary Danish inventor, mathematician, poet and philosopher. He invented the Soma Cube puzzle in 1933. I wrote a blog post about Hein and some of his creations several years ago, Soma Cube 2016.
The Soma Cube puzzle has seven pieces. One of them is a V-shaped piece made from three cubelets. The other six pieces are L, T, Z, R, S, and Y with four cubelets each. That’s
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Find all the highest pixel values using ismember
Startup Shorts: Humotech is Transforming Wearable Device Development
“As an avid outdoorsy person, the idea of losing my mobility and not being able to explore the world is a scary thought,” says Josh Caputo, but this is an unfortunate reality for many people. Empathizing with those dealing with impaired mobility and inspired to push the limits of human performance, Josh was determined to realize the potential benefits of robotics, an area he had grown familiar with during his time as a student at Carnegie Mellon University. As President and CEO of Pittsburgh, PA based startup Humotech, he and his team have developed a wearable robotics platform to research, prototype, and evaluate solutions to assist and augment human mobility.
THE CAPLEX SYSTEM
The Caplex system is a wearable, programmable robot that emulates the real-world physical characteristics of wearable machines and is designed to help people develop wearable devices, such as exoskeletons, prostheses,…
MF-Tyre Modeling in Formula Student
Introduction
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