frenchy_84 wrote:im glad you understand it, cause i did a degree on it and still dont understand it. i forwarded the link to Bit Map to my mates who have an Iphone, it looks good.
heheh... it sure is complicated. However, my understanding is really very shallow. There's some very complex maths involved in actually doing the transformations, and that is way over my head. I found some good thorough mathematical algorithms to do the job, and converted them to computer code, and low and behold it works. But it feels like black magic to me.
It's a bit like those computer programs that do something and then come back with the response, "Succeeded!". The exclamation mark seems to imply that success wasn't actually expected, and it's a miracle that it worked at all. That's kind of how I feel about my own software's ability to convert WGS datum's latitude/longitude references into any other datum's UTM grid references. Of course, this all happens behind the scenes (literally) of the map view, and the user never gets to see a surprised, "Succeeded!" message. They just see their path being plotted across the maps.
