I'm really not understanding how to go with this...
I've been reading and reading.. I can find all kind of algorithms.. I
can find a haversin algorithm that points me to the correct direction
if my device is pointing north.. but the needle is static... so if i
change the device orientation
this sounds trivial to me.
Just compensate the error that is introduced by not actually pointing the
device north by subtracting that error from your arrow's pointing angle. No
need to change any algorithm, just compensate for the dude, you're holding
it wrong
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I've tried it.
Adding and subtracting the value: event.values[0], which is actually
my Azimuth in degrees returned by the sensor.
But the orientation is off! ..
The algorithm gives the Correct value, but it doesn't move because
there's not sensor variables involved.. so if I subtract the
Basicly, if my device is pointing the wrong direction. I can't see the
value.. because the arrow is static. The arrow is always static if I
don't use any of the sensor values.
On Sep 22, 2010, at 10:08 AM, Christian Buchner wrote:
this sounds trivial to me.
Just compensate the error that
Pedro,
I think you should learn something about the way direction (and
orientation) is specified in computer programming.
http://en.wikipedia.org/wiki/Yaw,_pitch,_and_roll
http://en.wikipedia.org/wiki/Euler_angles
Well.. I'm guessing it's to hard or impossible then.. :/
On Sep 17, 2010, at 9:56 PM, Pedro Teixeira wrote:
Hi everyone...
I'm back with the same issue for the last couple of days… I'm trying
to create a compass for my application BUT the difference is that,
instead of having a line always
Pedro,
If I understand you correctly, you are having difficulties with the
device's orientation.
The bearing angle seems to be computed in the horizontal plane. If you
wish to adjust for the device's orientation, you need to concatenate it
with the bearing angle.
Google for quaternions.
Hi everyone...
I'm back with the same issue for the last couple of days… I'm trying
to create a compass for my application BUT the difference is that,
instead of having a line always pointing to north, I want this line to
point for a specific point. I've been trying dozens of algorithms and
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