29:58

Sometimes the text files I need to read have an irregular format, i.e. it changes row-to-row. MATLAB file reading functions that expect columns of data (e.g readtable), need a uniform format to work. So if this is not the case, you need to read the file line-by-line, then split the… read more >>

35:15

Now that I’ve got most of my data processing and plotting working, I think I can start using App Designer to put it all together. I’m going to move most of the code that I have developed into the app. I will need to make modifications to the signatures of… read more >>

40:29

I need to perform a number of checks on the values in a large table. Currently I implement the checks in code in a script. I find it can be cumbersome if I want enable or disable certain checks, as I need to comment out or use a if/then. Looking… read more >>

28:00

So far I have some charts displaying my server traffic in a while loop. Next, I think I want to execute the chart updates at a regular rate, so I’m going to move the contents of the loop into a separate function and call it from a timer object. This… read more >>

34:06

In my last post, I worked on accessing a set of continually updating log files from a server. Here I will review what I did to tidy up my code, then work on plotting the streaming data as it comes in.
Features covered in this code-along style video include:

Plotting
datetime function… read more >>

59:44

This will be one of a few posts where I work on building an app that will visualize traffic to a web server, letting me monitor it as its being used. I plan to use App Designer, then deploy the app to the web, which was a new feature in… read more >>

34:21

Here I restructure the section of my code that filters the requests, so I can easily add any filter rule (as an anonymous function) in the future. Once again I forgot to turn on my webcam so you don’t get to see my smiling face, just my desktop.
Features covered in… read more >>

Doug Hull was the founder and owner of this blog for 10 years. I talked about his contributions in my first post.
Find out what he is up to these days in his interview with John Kelly over on the MATLAB Community blog.
… read more >>

33:46

Here I continue with my analysis of the log files of a different server. I need to modify my map function to create some variables and strip some rows which I am not able to do during file reading.
Features covered in this video include:

datastore
mapreduce
regexp

Follow me (@stuartmcgarrity) if you want… read more >>

34:15

I want to carryout the analysis I did in my previous post on another server. However, that server has a different log file format. So I decide to make a parameterizable function that can return a datastore for any server.
Features covered in this video include:

datastore
mapreduce

Follow me (@stuartmcgarrity) if you want… read more >>