%隨機(jī)生成在場(chǎng)地（長(zhǎng)length，寬width）中的n個(gè)節(jié)點(diǎn)（均勻分布）,返回節(jié)點(diǎn)的橫縱坐標(biāo)
function[nodex,nodey,nodez]=creatnode(n,length,width,high) 
    nodex=rand(1,n)*length;%rand(1,n)生成1*n隨機(jī)陣 
    nodey=rand(1,n)*width;