Re: Request for guidance on mapping data - trig question

rolfedh@xxxxxxxxx wrote:
I'd like to generate a colored 'heat map' of readings from a hand-held
sensor being moved around a room by a person.

I envisioned something like having two "measuring spools" (or ranging
instruments), separated by a known distance, measuring the distance to
the sensor.

String pull encoders???

If one knows the length all three sides of a triangle, how does one
get the x,y coordinates of the sensor?



It is at the intersection of the two circles of radius "measured distance" centred at the measuring device.

r1^2=x1^2+y1^2
r2^2=x2^2+y2^2

x1=x2, y1=y2
Anyway...I'll get back to that



Any recommendations on:
- Other cost-effective or easy (out of the box) methods for achieving
this result.

easy? nope

- Software for transforming a signal and x,y coordinates into a color
image.


Matlab
a VB script
Excel

look up RGB format - I think it is fairly easy to make an image from data arranged in the right fashion.
.

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