70 



A MANUAL OF TOPOGRAPHIC METHODS. 

 Example of figure adjustment by least squares. 



Side equation. 



[Taking as the pole.] 



-0= + 186.0 — 3.0 (})+ 03.0 (;)— 37.9 (S)+ 37.9 (S)— 27.0 (i)+ 27.0 (3). 

 _[_11.0(i)+11.0(J)- 9.4(s)+ 9.4 (»)- 53.7 (?)+ 53.7 (}).] 



Equations of condition. 



.0=+ 9».619-S + S-? + ?-J + 3 

 .0=+15 .394— {+ J — 1+ ; — g + 5 

 .0=+15 .767-3+ §-g +g"-;+> 



Collecting terms in (<(> and dividing through by 100 i 



i to avoid dealing with large i 



+ 1.86+ .507 (',') + .030 f — .489 (i!) | .379 (j)— .270 (J). 

 + .176 (!j) + .110(J) + .094 (|) -.537 (f). 



