Calculation the coordinate of a point

13 visualizzazioni (ultimi 30 giorni)
Maria
Maria il 28 Mar 2014
Commentato: Pratik Pandya il 5 Feb 2019
If the distance and angle between two points is known and the coordinate one of two points is also known , how could I calculate the coordinate of second point ? .

Risposta accettata

Mischa Kim
Mischa Kim il 28 Mar 2014
Modificato: Mischa Kim il 28 Mar 2014
Mick,
x2 = x1 + d*cos(al);
y2 = y1 + d*sin(al);
where d is the distance and al is the angle in rad measured between the x-axis and the line defined by the two points.

Più risposte (1)

Carlos
Carlos il 28 Mar 2014
I will give you some clues
You have points (x1,y1)(known) and point (x2,y2) (unknown),so you have two unknown variables, so you need two equations.
First equation
You know the distance d, and you know the points x1,y1
d=sqrt((x1-x2)^2+(y1-y2)^2)
Second equation
You know the angle, so you can ifnd out the slope m=tan(alpha) (alpha is the angle) and
m=(y2-y1)/(x2-x1)
Now just solve your system of two equations with two unknowns
  1 Commento
Pratik Pandya
Pratik Pandya il 5 Feb 2019
hEY CARLOS,
I was just wondering that what would happen if we shift the scenario to three dimensions.I have (x1,y1,z1) and (x2,y2,z2) both known to me with distance (and seperately dx,dy,dz) and angular displacement (thx,thy,thz).
I want to generate one coordinate set( say on (x1,y1,z1) side) based on which i will generate the another on the (x2,y2,z2)side.

Accedi per commentare.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by