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MATLAB plotting error

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salih
salih 2011-2-9
回答： Walter Roberson 2018-3-14
Hi,
I have 3 data to plot. the first data is a 2 dimensional 120x201 matrix(the name of the matrix is H and it contains x+iy types datas) I'd like to plot the datas in 3D. I used the following code
x=abs(H(:,:)) y=1:201; z=1:121; plot(x,y,z)
but it doesn't draw it, it gives this error : ??? Error using ==> plot Data must be a single matrix Y or a list of pairs X,Y
how can I solve the problem?

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回答（2 个）

Walter Roberson
Walter Roberson 2011-2-9
You need to use plot3() to plot 3D data.
However, what I would suggest you use in your situation is:
surf(abs(H))
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Prajakta Patil
Prajakta Patil 2018-3-14
编辑：Walter Roberson 2018-3-14
Simple WSN Animator2 Author: Amburose Sekar.S E-mail: amburoseicanwin@gmail.com Future Work---Full supported WSN toolbox using parrallel computing
clear all;
close all;
clc;
%creation of nodes
nr_fr=10;
frames = moviein(nr_fr);
N=1000;
Color='b';
Totalnodes='10'; % Total Numbr of Nodes
n11=str2num(Totalnodes);
%%distance of nodes
min1=20;
max1=120;
for i1=1:n11
if i1==1
node(i1,:)=cat(2,i1+1:n11,n11);
else
node(i1,:)=floor(n11*rand(1,n11))+1;
end
end
o1 = floor(min1 + (max1-min1).*rand(1,n11));
o2 = floor(min1 + (max1-min1).*rand(1,n11));
%intiator
oint1=10;
oint2=10;
figure(1)
for i=1:400%coverage range
cla;
plot(oint1,oint2,'*','LineWidth',1,...
'MarkerEdgeColor','k',...
'MarkerFaceColor','y',...
'MarkerSize',12);
text(oint1,oint2,'intiator','FontSize',8);
axis([min1-30 max1+30 min1-30 max1+30])
hold on
int=[1 3 4 5 7 8 9 10];
%axis([0 100 0 100])
%KGC
okgc1=40;
okgc2=40;
plot(okgc1,okgc2,'o','LineWidth',1,...
'MarkerEdgeColor','k',...
'MarkerFaceColor','r',...
'MarkerSize',16);
text(okgc1,okgc2,'CH','FontSize',8);
hold on
hold on
plot(o1,o2,'^','LineWidth',1,...
'MarkerEdgeColor','k',...
'MarkerFaceColor','y',...
'MarkerSize',12);
for j=1:n11
text(o1(j),o2(j),int2str(j),'FontSize',12);
end
hold on
plot3(i,[oint1 okgc1],[oint2 okgc2],'b');
d=sqrt((oint1-okgc1)^2+(oint2-okgc2)^2);
d2=max(sqrt((o1-okgc1).^2+(o2-okgc2).^2));
k=d;
%k=40; % find k value
if i>k
for j=1:numel(int)
plot3(i-k,[okgc1 o1(int(j))],[okgc2 o2(int(j))],'r')
end
k2=d2+d; %find k2 value
if i>k2
for j=1:numel(int)
plot(i-k2,[o1(int(j)) okgc1],[o2(int(j)) okgc2],'k')
end
end
end
if i>=(2*d2+d)
break;
end
hold on
frames(:, i) = getframe;
end
save frames
load frames
figure(2)
movie(frames,1,60,[1 2 0 100])
I've tried using plot function it says
Error using plot
Data must be a single matrix Y or a list of pairs X,Y.
Error in main (line 93)
plot(i,[oint1 okgc1],[oint2 okgc2],'b');
then i tried using pliot3, it says
Error using plot3
Vectors must be the same length.
Error in main (line 93)
plot3(i,[oint1 okgc1],[oint2 okgc2],'b');

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Walter Roberson
Walter Roberson 2018-3-14
plot3([i i], [oint1 okgc1], [oint2 okgc2], 'b');

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