PhysioNet data is available in binary (dat) form but their web site also provides records in JSON.
These records include samples / measurements from 12-lead ECGs recorded at 1ksps.
To convert these to CSV we can use the ol’ jq:
Another one for the todo list.
Fancy plotting leads I/II/III out and making and interactive scroller for time vs vector / direction.
Input data might be from here or here. Unfortunately both of these are for synthesising a single lead.
For a small project I was working on, I wanted to distribute video via MPEG-DASH instead of my usual go-to, HLS. Like HLS, MPEG-DASH supports delivering video via adaptive bit rates.
EN4 data is available here as netCDF format. It’s a set of data that pulls back salinity and temperatures from beacons across the planet. It’s recorded as a grid accurate to 1°.
This was an installation project I did. A telephone number was projected on the wall and audience members would dial it. The Asterisk PBX I was running and gave an Interactive Voice Prompt to the person on the phone.
Introduction I run Debian Squeeze with OpenSSH, sitting behind Shorewall. I access my systems using OS X’s SSH client. I also use MacPorts.
This simple guide will show you how to quickly get up and running with Mosh.
A couple of changes to JAMM.
What is JAMM? Quite simply, it’s a front-end written in Java which handles administration of LDAP-based virtual lookup tables. I use this alongside Postfix and Dovecot.
A few of my users have expressed annoyance at not being able to change passwords very easily. I experimented with using LDAP for user administration last year, but half the issue with that was getting it to work along my lookups for various users’ chroots.
Update I don’t actually use AWB any more, I use Hugo. However, I’ve left this here in case anyone is still using AWB.
This site now uses AWB along with AsciiDoc to manage the site content.
Introduction nginx (pronounced Engine X) is super-quick. Really, really super quick. I came to it having used Apache for years, ending up deciding against LightHTTPd (memory leaks) and then eventually deciding to settle with the use of nginx due to its stability and speed.