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Stuart McGarrity


MathWorks

505 total contributions since 2005

I'm from a small town called Largs near Glasgow in Scotland. I studied for my undergraduate degree in Electronic and Microprocessor Engineering and PhD in Signal Processing at Strathclyde University. I live in Natick, MA.

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Published


Debugging a Failed File Import
19:12 One of my continuously running MATLAB scripts just failed and has stopped at a breakpoint (I had set...

12 days ago

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Creating a Function to Format a Spreadsheet
33:35 I often export to Excel to share results with others. In doing so I control the format of the output with...

24 days ago

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Extracting the Variable Names of a Logical Table
16:09 I have a table of logical data, with only one true in a row. I want to find the variable name (column...

1 month ago

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Making a MATLAB Script to Move a Set of Video Files Based on Content
28:06 I have a folder full of video files (MP4s) which I want to move based on their content. Specifically, if...

2 months ago

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Using TCP-IP to Communicate Between Two Instances of MATLAB
16:59 Here I step through how I implemented communication between two MATLAB instances on two different...

2 months ago

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Building a Web Server Monitoring App, Part 6: UIFigureCloseRequest Callback
5:46 If you remember, my app creates a timer to control the execution of the main loop. It doesn’t however...

3 months ago

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Building a Web Server Monitoring App, Part 5: Hooking-up Some UI Controls
31:13 Now I have a basic working app that starts monitoring a specific server immediately. Next, I try and...

3 months ago

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Reading Whole Lines of Text from a File
29:58 Sometimes the text files I need to read have an irregular format, i.e. it changes row-to-row. MATLAB file...

4 months ago

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Answered
How to follow progress of a parfor-loop?
You can implement this with a data queue. See a waitbar example here: <https://www.mathworks.com/help/distcomp/send.html#bvmkkgt...

5 months ago | 1

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Building a Web Server Monitoring App, Part 4: Starting with App Designer
35:15 Now that I’ve got most of my data processing and plotting working, I think I can start using App Designer...

5 months ago

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Solved


Project Euler: Problem 1, Multiples of 3 and 5
If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23...

5 months ago

Published


Using a List of Anonymous Functions to Implement a Set of Checks on a Data Set
40:29 I need to perform a number of checks on the values in a large table. Currently I implement the checks in...

5 months ago

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Building a Web Server Monitoring App, Part 3: Scheduling with a Timer
28:00 So far I have some charts displaying my server traffic in a while loop. Next, I think I want to execute...

6 months ago

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Answered
Apply function to all fields of a structure
Take a look at structfun and arrayfun.

6 months ago | 0

Published


Building a Web Server Monitoring App, Part 2: Plotting Streaming Data
34:06 In my last post, I worked on accessing a set of continually updating log files from a server. Here I will...

7 months ago

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Building a Web Server Monitoring App, Part 1: Reading Streaming Log Files
59:44 This will be one of a few posts where I work on building an app that will visualize traffic to a web...

7 months ago

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Using Anonymous Functions to Parameterize the Log File Analysis
34:21 Here I restructure the section of my code that filters the requests, so I can easily add any filter rule...

7 months ago

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Published


What is Doug Hull Up to These Days?
Doug Hull was the founder and owner of this blog for 10 years. I talked about his contributions in my first post. Find out...

8 months ago

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Updating My Map Function to Handle the New Log File Format
33:46 Here I continue with my analysis of the log files of a different server. I need to modify my map...

8 months ago

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Published


Making a Server Datastore Function
34:15 I want to carryout the analysis I did in my previous post on another server. However, that server has a...

8 months ago

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Using the MapReduce Technique to Process 500GB of Server Logs
41:48 Here I’m using the MapReduce functionality in Parallel Processing Toolbox to process several hundred GBs...

9 months ago

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Published


Using R2016b Arithmetic Expansion Rules to Make a Matrix Without a For Loop
5:33 Here I show how the new arithmetic expansion rules in release 16b can be used to answer a blog post...

10 months ago

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Published


Incorporating Hourly Data Analysis into Another Function
23:26 Here I take the analysis I did in this post to group website crawl data by the hour, and incorporate it...

10 months ago

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Published


Modifying My Script to Add a Levenshtein Distance Column to My Table
30:55 Here I add another data column to my table, which is the Levenshtein distance between the redirecting...

11 months ago

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Published


Modifying a Script to Add an Additional Column to a Table
32:34 Here I’m doing some pretty mundane everyday modifications to an existing script (code-along style). I...

11 months ago

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Published


Using Retime with a Timetable to Aggregate Data By Hour
22:25 Last week I used varfun on a datetime variable in a table to count rows by hour. One of my colleagues...

12 months ago

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Published


Using varfun with datetime Values to Group Data By Hour
18:19 When I analyze our website, the testing system I use downloads all pages. It can take several hours as...

1 year ago

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Published


Writing a Script to Count Data in Multiple Text Files
37:54 Here I need to combine the data from multiple text files by grouping and summing by one variable. I also...

1 year ago

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Published


Adding a New UI Element to a MATLAB App with App Designer
21:28 If you have used GUIDE a lot in the past and are thinking of trying out App Designer, this will give you...

1 year ago

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Answered
Forecasting and predict using Artificial Neural Networking
The link in your question is broken.

1 year ago | 0

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