Welcome to Dedomenics blog




This is my new blog for me Jonathan Hayward to show my work as a data analyst.

I've been doing IT professionally since 2003, and messing about with computers for far longer than that.

In 2017 I wanted to move on from conventional IT support and go into data analysis and learn SQL.


Dedomenics is derived from dedoména (δεδομένα) which is data in Greek with a bit of a play on words.



Location: London, UK

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Multiple instances of Chrome for fun, testing and experimentation

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I like Chrome.  Google's own browser is now the industry standard choice for both home and businesses today, and works on Windows, Mac or Linux and in different languages, is on the forefront support of modern web standards and better printing support. If you use the 'portable' version of Chrome it has all the same advantages but you can actually install it more than once. Here's how.  Go and grab it from:- https://portableapps.com/apps/internet/google_chrome_portable One thing to note; Portable Chrome doesn't actually work on a USB drive.   If you do, it will be slow and crash a lot.   The reason is this, a browser needs to juggle a lot of files for pictures and code that's used in the background of a lot of web sites.   Most USB drives have a slow write speed, slower than a conventional built hard disk or SSD drive in all PCs.  Constantly writing to a USB drive will cause any browser to just choke and stall. In this case, we will ...
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A little while ago, I came across that Google, for the purposes of being kosher with the GDPR laws, you can actually download great big lumps of data for some/all of the duration of you consumed Google's services. On this site, you can see all the places Google has sensed you have been with a smart phone. https://www.google.com/maps/timeline?pb   - go and try it!! So we can also download a big dataset which Google has to legally let us download. https://takeout.google.com/ Ok, so I wanted to download all my mapping history. I got this as one big fat JSON file. How big is this? So I opened this in a freeware text file editor, 480 Megabytes, all the places I've been since 2013 (I got a smartphone relatively late in life, I know) Yes, this has over 20 million lines of code. Now can I exploit the methods of how the big tech companies are exploiting us. he he.
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