基綫網有兩種:單菱形與雙菱形。為正確計算基綫網擴大邊的權,在第一種情形下需解五個法方程式(三个圖形條件方程式,一個極條件,和一个權函數條件方程式);在第二種情況下需解九個法方程式(六個图形條件方程式,两個極條件和一个權函數條件方程式)。但如按下述方法計算,可大大簡化擴大邊權之计算程序。計算相同情況有効數字表明,利用此種方法計算 There are two types of baselines: single diamonds and double diamonds. In order to correctly calculate the weight of the extended edges of the baseline net, in the first case, five equations (three graphical conditional equations, one polar condition, and one weight function conditional equation) must be solved; in the second case, The nine normal equations (six graphical conditional equations, two pole conditions and one weight function conditional equation). However, if calculated as follows, the calculation procedure for the expansion of the power of tenure can be greatly simplified. Calculating the same situation The effective figures show that using this method of calculation