There is a common online question about migrating from Apple's Mail app (Using .emlx format mail files) to Thunderbird (or any other non-Mail app). I looked at a few options and have decided, as strange as it may seem, that installing an IMAP service was the best solution.

I’ll describe here a procedure for the evaluation of the tranforming parameters necessary to effect coordinates change among reference frames materialized on different Datum.

In order to have the changing of Datum it is used a geometric transformation of correspond (conforme) type through the resolution of a last squares system based on a homologous points series, in order toobtain the direct changing from plane coordinates in one of the two Datum to the corresponding in the other Datum.

Over the past few months I've been picking away on various hardware projects, particularly configuring my Arduino board as a USB joystick device and fusing in Python code, GPS signals, etc.

During this time I met Massimo Di Stefano (aka epifanio) who is also doing a bunch of neat controller work with ossimPlanet. You may know him from the #osgeo channel in IRC. We both feel we are just playing around in our spare time, but have some common goals. We are both interested in open source, hardware, ossimPlanet, Python, GPS and UAVs.

His work is encouraging for me and I think it is really cool. To help share some of his work, he'll be blogging on here from time to time (he has his own feed).

As official Slashgeo day I wanted to make mention of this service for geospatial related news topics. When I'm too busy to browse through lists of blogs and websites, I can always depend on some interesting headlines from Satri and the gang. They are sure to point out much open source related news as well, which I always appreciate.

See: Slashgeo.org

A friend pointed out this Guardian article about Stallman's (and others) perspective on the cloud computing direction. From an open source perspective I've felt similar concerns re: the shift to GMail, but I know that many users (like me) merely use it for mail mirroring, not a wholesale dependency.

What better way to spend a long weekend that experimenting with a new Linux-based file-sharing and networking platform? ;-) Amahi Linux Home Server aka the Home Digital Assistant is a set of pre-configured tools and services that are added on to the Fedora Core base. I just learned about it and thought I'd give it a try.

I haven't had time to put up more photos or instructions, but have made a little progress with adding sensors to my Arduino (aka Freeduino) board. I now have a range of code and devices working including:

• my GPS receiver (Garmin eTrex Legend) - parsing coordinates and, for example, positioning the camera in ossimPlanet

With OSSIMPlanet's nifty camera control and listener functionality, as demonstrated in my last post, you've got so many neat opportunities. A couple nights ago I got a basic GPS NMEA parser working. Here's a pic of the ultra-professional connection method I use to hook it to my arduino board :)

A while back Mark Lucas took me through a demonstration of the sort of peer-to-peer communication capabilities of OSSIMPlanet. Little known to me after turning on a few check boxes in the preferences (and opening TCP ports in your firewall) it will let you share what you are viewing with others. It can even syncronise the WMS layers the source has loaded. It was really exciting to see this sort of collaborative viewing experience turning into reality.