MATLAB程序总是出现?Error using ==> stem at 44 X must be same length as Y.%hammingchuang.mM=11;n=[0:1:M-1];wc=0.3pi;hd=ideal_lp(wc,M);w_rec=(boxcar(M))';w_ham=(hamming(M))';h_rec=hd.w_rec;h_ham=hd.*w_ham;[db1,mag1,pha1,grd1,w1]=freqz_m(h_rec,[

来源：学生作业帮助网编辑：作业帮时间：2024/11/17 03:32:30

MATLAB程序总是出现?Error using ==> stem at 44 X must be same length as Y.%hammingchuang.mM=11;n=[0:1:M-1];wc=0.3*pi;hd=ideal_lp(wc,M);w_rec=(boxcar(M))';w_ham=(hamming(M))';h_rec=hd.*w_rec;h_ham=hd.*w_ham;[db1,mag1,pha1,grd1,w1]=freqz_m(h_rec,[
MATLAB程序总是出现?Error using ==> stem at 44 X must be same length as Y.
%hammingchuang.m
M=11;
n=[0:1:M-1];
wc=0.3*pi;
hd=ideal_lp(wc,M);
w_rec=(boxcar(M))';
w_ham=(hamming(M))';
h_rec=hd.*w_rec;
h_ham=hd.*w_ham;
[db1,mag1,pha1,grd1,w1]=freqz_m(h_rec,[1]);
[db2,mag2,pha2,grd2,w2]=freqz_m(h_ham,[1]);
figure(1)
subplot(2,2,1);stem(n,hd,'k');grid
title('加窗前脉冲响应')
axis([0 M-1 -0.2 0.5]);ylabel('hd(n)')
subplot(2,2,2);stem(n,h,'k');grid
title('加窗后脉冲响应')
axis([0 M-1 -0.2 0.5]);ylabel('h(n)')
subplot(2,2,3);plot(w1/pi,db1,'k');grid
title('加汉明窗前幅频特性（dB)')
axis([0 1 -100 10]);ylabel('Decibels')
set(gca,'XTickMode','manual','XTick',[0,0.2,0.3,1])
set(gca,'YTickMode','manual','YTick',[-50,0])
subplot(2,2,4);plot(w2/pi,db2,'k');grid
title('加汉明窗后幅频特性（dB)')
axis([0 1 -100 10]);ylabel('Decibels');
set(gca,'XTickMode','manual','XTick',[0,0.2,0.3,1])
set(gca,'YTickMode','manual','YTick',[-50,0])
运行后出现：
Error using ==> stem at 44
X must be same length as Y.

matlab中读txt文件中的数据,总是出现Error:Unexpected MATLAB operator,程序如下 y1=textread('1.txt');y1=y1(29:56);y1=y1';x1=ones(1,28);plot(x1,y1,'*') MATLAB程序,这个程序不知道为什么出现?Error using ==> mpower Matrix must be square. matlab Matrix must be square.怎么解决以下是我的运行程序,运行时总是出现这样的结果Error using ==> mtimesInner matrix dimensions must agree.我该如何修改这个程序（我要做出H关于t的函数图像）l1=36.15;l2=553.3 有一个matlab程序,总是出现如下错误：Error in ==> conv at 40.程序如下：nx = [0:3];ra = [ nx >= 0 ];nh = [0:3];rb = [ nh >= 0 ];y=conv(ra,rb);M=length(y)-1;n=[0:M];disp('输出序列y=');disp(y);stem(n,y);xlabel('时间序号n');ylabe matlab程序运行总是出现? Error using ==> sym.mpower Matrix must be square. 加了“.”还是不行呀m=zeros(1,50);a=zeros(1,50);b=zeros(1,50);f0=zeros(1,50); syms d x1 x2 e; m(1)=1;c= MATLAB程序总是出现?Error using ==> stem at 44 X must be same length as Y.%hammingchuang.mM=11;n=[0:1:M-1];wc=0.3*pi;hd=ideal_lp(wc,M);w_rec=(boxcar(M))';w_ham=(hamming(M))';h_rec=hd.*w_rec;h_ham=hd.*w_ham;[db1,mag1,pha1,grd1,w1]=freqz_m(h_rec,[ matlab中关于统计回归多元回归模型如何求解,总是出现Error using plot Vectors must be the same lengths 冒险幻想082open process error为什么冒险幻想总是出现open process error 我的matlab程序哪里错了? t=0:0.01:2*pi x=cos(t)^3 y=sin(t)^3 plot(x,y) 总是显示? Error using ==> 超定方程组的Matlab 求法xhat=inv(A'.*A).*A'.*b; Error using ==> times Matrix dimensions must agree.我运行求超定方程组的算法,怎么会出现上述问题?请教高手给出正确的程序. Matlab中出现?Error using ==> mtimes Inner matrix dimensions must agree.程序如下x=3:0.1:20;y=x*(cos(x))^3.*(sin(x))^2+x^2.*(sin(x*8))^3-9*x^4.*cos(x); u''-ux=sinx,u(0)=u(1)=0,求MATLAB求解的程序 MATLAB编程问题弹出了这样的问题：Error using / Matrix dimensions must agree.Error in Untitled4 (line 11)C=Q./(2*3.14*u*y1.*z1).*exp(-Y.^2./(2*y1.^2)).*(exp((H)^2/(2*y1.^2))+exp((H)^2./(2*z1.^2)));下面是程序：x=0:3000;y=-500:500;[X,Y Matlab 程序运行不出来求高手解救R=2;C=0.5;t=0:pi/20:10;U=7*cos(t.*2);Uc0=4;T=R*C;Uc=U+(Uc0-U)*exp(t/T);plot(t,Uc);结果是? Error using ==> mtimesInner matrix dimensions must agree.帮忙看看什么地方出问题了,谢谢. Error:Not found AP Found 0 APs!这二个是安装程序时候出现的 matlab solve 求解方程组算例遇到的问题1#和2#程序类似,1#运行没问题,但是2#运行会出现Error using ==> subsasgnSubscripted assignment dimension mismatch.Error in ==> sym.subsasgn at 33y = builtin('subsasgn',sx,a,b);请问问题 matlab里出现：Error using ==> vertcat CAT arguments dimensions are not consistent.Error in ==> zhu at 267GZ=[0,0,0,0,0,0,0,0,M1f;我的程序太长了,就不粘了.之前就是分别对每项求值,求完列了一个矩阵,然后就报错了.矩 matlab程序绘出一个公式的图形e^-2t * cos(3*pi*t)*[u(t)-u(t-3)] 程序如下 t=-1:0.01:4;m=(t>0);n=(t>3);x=exp(-2t)*[cos(3*pi*t)*(m-n)];plot(x,t);axis([-10,10,-2,5]);老提示 x=exp(-2t)*[cos(3*pi*t)*(m-n)];|Error:Missing MATLAB operator.公