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paceman
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Joined: 07/10/2011
Location: Australia
Posts: 1329

Posted: 01:09am 20 Jan 2013

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palcal said Doing this for my own reasons more than anything to see if I have learnt the ropes.
Picture and code for my Golf GPS.

Have fun up there Paul - it'll probably be cooler than Sydney or Melbourne during the summer!

palcal

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Joined: 12/10/2011
Location: Australia
Posts: 1989

Posted: 11:42am 20 Jan 2013

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Jim,
The argument is in degrees that is why I didn't convert it first. The result is in radians. Maybe I confused you I was beginning to get confused myself.
Paul.

"It is better to be ignorant and ask a stupid question than to be plain Stupid and not ask at all"

palcal

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Joined: 12/10/2011
Location: Australia
Posts: 1989

Posted: 11:23am 22 Jan 2013

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I thought of this where I come up with most of my ideas in the middle of the nightin bed.
I think I have come up with an idea to make the distance calculation more accurate. Since I am working in an extremely small area in relation to the size of the earth, less than one minute in either direction, if I were to get the difference in latitude and difference in longitude for all intents and purposes I would have a rectangle or at my latitude almost a square, the top and bottom sides of which would decrease the closer I got to the pole until at the pole it would be a triangle. But here it would be almost a square. I could then calculate fairly accurately the length of the sides and use these as a constant in my calculation.Then as Geoff suggested I could just work with a plane figure. So using these as the X and Y axis of a graph I could plot the other two positions by calculating the length of the minutes and seconds obtained from the GPS reading, or even only the seconds. Therefore in the equation I could eliminate the degrees and minutes altogether and things would be much more accurate (I THINK).
Hope I explained it OK. ( I know what I mean)

"It is better to be ignorant and ask a stupid question than to be plain Stupid and not ask at all"

palcal

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Joined: 12/10/2011
Location: Australia
Posts: 1989

Posted: 12:41pm 22 Jan 2013

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Well after a bit more number crunching turns out I should have listened to Geoff in the first place (as usual). I was thinking for some reason I needed to know the position of the coords on the graph, but I don't I only need to know the difference between them.
What a lot of work for nothing.
Paul.

"It is better to be ignorant and ask a stupid question than to be plain Stupid and not ask at all"

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