I've nearly finished Webscavator, my visualisation application for the forensic analysis of user web history! The next series of blog posts will describe some of the visualisations I've used and how to code them. They are all written in server-side Python and client-side Javascript using jQuery. First on the list are heatmaps. These visualisations show the data … Continue reading Visualising data: Heatmaps
Tag: Python
Image Steganography
Steganography is the art of hiding something in something else in plain sight. Usually images or text are hidden within other images or sound files. For example, in the image below of trees there is an image of a cat hidden inside it. Wikipedia explains that for each component of each RGB value, if you take just … Continue reading Image Steganography
Script to put your music in a database
I made this script a while back now to populate a database with all the music on my computer (so excuse any poor Python!). It assumes you are on Windows and have all your music in one folder, arranged by artist with sub folder albums with songs in them. It also assumes you'll use PostgreSQL, … Continue reading Script to put your music in a database
Creating captchas in Python #2
Once the script to generate captchas is set up (see previous post) this can be easily tied into a Python web page. This assumes you are using Werkzeug and Mako, but I'm sure Django/Pylons with Jinja etc won't be too different. The code to display the image in the Mako template is below. For the image, … Continue reading Creating captchas in Python #2
Blog tags in Python
Creating the blog tags for this website was a bit tricky because I wasn't sure how to make the tags have different sizes according to their significance. I started off with 5 spans and ordered the tags in terms of frequency and divided them equally into the spans. However tags are not evenly distributed, so … Continue reading Blog tags in Python
Creating captchas in Python
In making this website and in my 4th year honours project I implemented a captcha (which you can see if you try and make a comment). I thought this would be a bit of a nightmare to do, but with Steven's help and the awesomeness of Python, it was quite easy. The code originally comes from here, but I … Continue reading Creating captchas in Python
New website!
I have redesigned lowmanio.co.uk to be more bloggy, and hopefully I shall actually keep up with my blog this time. I got a little over enthusiastic with blog posts as you can see...I've already blogged 6 times! The topics I will blog about are in the categories to your right. I am starting a masters in Forensics Informatics in … Continue reading New website!
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