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Stuart’s MATLAB Videos

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Posts 91 - 100 of 168

Results for: Code-Along

Editing (Another) Function While Stopped at a Breakpoint 3

I find myself needing to update one of my functions that takes a while to run, in this case, to replace the contents of a large string array depending on certain criteria. I want to have the data… read more >>

Saving State in a WindowButtonMotionFcn Callback

I need to display some text information when I hover over the nodes in my graph plot. I’m going to use a text object, updated via the WindowButtonMotionFcn property of the figure, but I need to… read more >>

Counting the Frequency of Parameters in a Set of URLs 1

Here I need to know how often different parameters occur in a large list of URLs. I’m not usre if I should use the matlab.net.URI class or just use string functions.
Features covered in this… read more >>

Using detectImportOptions with Large Text Files

Yesterday, I was loading a CSV file of about 1 million rows and 300 columns, comprising lots of string variables. It took a while to load, then I remembered I only needed 1 or 2 columns and how… read more >>

My Web Scraping App: Adding a Single-Match Pattern

Now I want to add a second regex pattern that will only match once per page and display what it finds in the results. This would let me, for example, extract the language of each page and display it… read more >>

My Web Scraping App: Only Get HTML Content if Page List Changes

Currently, my (small scale) web scraping app reads the HTML content of the list of pages, then searches for pattern matches.
I want to change it, so that it only reads the HTML content if the list of… read more >>

Handling Multiple Match Tokens in My Web App

Now I want to modify the MATLAB app I recently made to scrape web pages, so that it can handle multiple multi-part patterns. i.e. where there are more than one token in the regular expression match… read more >>

Making Improvements to My Web Page Scraping MATLAB App

I want to modify the MATLAB app I recently made to scrape web pages, so that it can handle the case where there is more than one match per page.
Features covered in this code-along style video… read more >>

Deploying My MATLAB App as a Web App 1

I want to turn the MATLAB App I developed recently into a web app so it is accessible from a browser. It can then be used by my colleagues who work on the website and do not use MATLAB.
To do this,… read more >>

Building a MATLAB App to Extract Web Page HTML Patterns 1

A colleague asked if I could extract a date string from a set of MATLAB Answer pages. I’ve often needed to extract patterns from random web pages and have written scripts to do so, so I thought… read more >>

Posts 91 - 100 of 168