§5.6 灵敏度分析结果显示命令RANGE
§5.6 灵敏度分析结果显示命令RANGE1.命令功能:显示当前模型的灵敏度分析结果。2.命令格式: :RANGE<CR>3.命令使用:对于第三章第三节中已求得灵敏度分析结果的例子,使用RANGE命令后可显示如下内容::RANGE RANGESIN WHICH THE BASIS IS UNCHANGED COST COEFFICIENT RANGES VARIABLE CURRENT ALLOWABLE ALLOWABLE COEF INCREASE DECREASE X1 2.000000 22.000000 INFINITYX2 8.000000 INFINITY 8.000000X3 6.000000 INFINITY 6.000000 RIGHTHAND SIDE RANGES ROW CURRENT ALLOWABLE ALLOWABLE RHS INCREASE DECREASE 2 250.000000 INFINITY .0000003 50.000000 .000000 50.0000004 150.000000 .000000 150.000000:
同其它显示类命令一样,RANGE命令不进行计算,只用于显示。因此这一命令只能用在GO命令的灵敏度分析之后。如果不对模型进行计算便使用该命令,则无法显示出需要的信息。且看下例::RETR MODEL.LIN :RANGE WARNING,SOLUTION MAY BE NONOPTIMAL/NONFEASIBLE RANGES IN WHICH THE BASISIS UNCHANGED COST COEFFICIENT RANGES VARIABLE CURRENT ALLOWABLE ALLOWABLE COEF INCREASE DECREASE X1 2.000000 -2.000000 INFINITYX2 8.000000 -8.000000 INFINITYX3 6.000000 -6.000000 INFINITY RIGHTHAND SIDE RANGES ROW CURRENT ALLOWABLE ALLOWABLE RHS INCREASE DECREASE2 250.000000INFINITY .0000003 50.000000INFINITY .0000004 150.000000INFINITY .000000
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