作业帮问一下在matlab中出现Subscript indices must either be real positive integers or logicals是啥意思[kx,ky]=meshgrid(0:pi/100:pi,0:pi/100:pi)u=0.5t1=-1,t2=1.3,t3=0.85,t4=0.85ax(kx,ky)=-2*t1.*cos(kx)-2*t2.*cos(ky)-4*t3.*cos(kx).*cos(ky) ay(kx,ky
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/05 02:51:18
![问一下在matlab中出现Subscript indices must either be real positive integers or logicals是啥意思[kx,ky]=meshgrid(0:pi/100:pi,0:pi/100:pi)u=0.5t1=-1,t2=1.3,t3=0.85,t4=0.85ax(kx,ky)=-2*t1.*cos(kx)-2*t2.*cos(ky)-4*t3.*cos(kx).*cos(ky) ay(kx,ky](/uploads/image/z/12711297-57-7.jpg?t=%E9%97%AE%E4%B8%80%E4%B8%8B%E5%9C%A8matlab%E4%B8%AD%E5%87%BA%E7%8E%B0Subscript+indices+must+either+be+real+positive+integers+or+logicals%E6%98%AF%E5%95%A5%E6%84%8F%E6%80%9D%5Bkx%2Cky%5D%3Dmeshgrid%280%3Api%2F100%3Api%2C0%3Api%2F100%3Api%29u%3D0.5t1%3D-1%2Ct2%3D1.3%2Ct3%3D0.85%2Ct4%3D0.85ax%28kx%2Cky%29%3D-2%2At1.%2Acos%28kx%29-2%2At2.%2Acos%28ky%29-4%2At3.%2Acos%28kx%29.%2Acos%28ky%29+ay%28kx%2Cky)
问一下在matlab中出现Subscript indices must either be real positive integers or logicals是啥意思[kx,ky]=meshgrid(0:pi/100:pi,0:pi/100:pi)u=0.5t1=-1,t2=1.3,t3=0.85,t4=0.85ax(kx,ky)=-2*t1.*cos(kx)-2*t2.*cos(ky)-4*t3.*cos(kx).*cos(ky) ay(kx,ky
问一下在matlab中出现Subscript indices must either be real positive integers or logicals是啥意思
[kx,ky]=meshgrid(0:pi/100:pi,0:pi/100:pi)
u=0.5
t1=-1,t2=1.3,t3=0.85,t4=0.85
ax(kx,ky)=-2*t1.*cos(kx)-2*t2.*cos(ky)-4*t3.*cos(kx).*cos(ky)
ay(kx,ky)=-2*t2.*cos(kx)-2*t1.*cos(ky)-4*t3.*cos(kx).*cos(ky)
axy(kx,ky)=-4*t4.*sin(kx).*sin(ky)
au(kx,ky)=0.5*ax(kx,ky)+0.5*ay(kx,ky),a_(kkx,ky)=0.5*ax(kx,ky)-0.5*ay(kx,ky)
Eu(kx,ky)=au(kx,ky)+sqrt((a_(kx,ky)).^2+(axy(kx,ky)).^2)-u
E_(kx,ky)=au(kx,ky)-sqrt((a_(kx,ky)).^2+(axy(kx,ky)).^2)-u
plot(Eu(kx,ky),E_(kx,ky))
问一下在matlab中出现Subscript indices must either be real positive integers or logicals是啥意思[kx,ky]=meshgrid(0:pi/100:pi,0:pi/100:pi)u=0.5t1=-1,t2=1.3,t3=0.85,t4=0.85ax(kx,ky)=-2*t1.*cos(kx)-2*t2.*cos(ky)-4*t3.*cos(kx).*cos(ky) ay(kx,ky
在MATLAB,矩阵向量的下标只能从1开始,不能从0开始.提醒你错误的意思是“下标只能是正实数或逻辑值”.
你的ax矩阵是（0,0）开始的矩阵,所以出错.