How to fix the error 'Adjacency matrix must be square'?

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karthikeyan Reddy Thoomu 2017-7-28

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https://ww2.mathworks.cn/matlabcentral/answers/350721-how-to-fix-the-error-adjacency-matrix-must-be-square

评论： Walter Roberson 2017-7-29

I was working with following code to plot and it shows the error 'Adjacency matrix must be square'

clear all
close all
clc
K=[0 0 0 0 1 , 0 0 0 0 2 , 0 0 0 0 3, 0 0 0 0 4 , 0 0 0 0 5 , 0 0 0 0 0];
nodes= ['A', 'B' , 'C' , 'D' , 'E' , 'F'];
G = digraph(K,nodes);
plot(G,'Layout','circle')
title('STAR TOPOLOGY')

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Answer 1

Walter Roberson 2017-7-28

1
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/350721-how-to-fix-the-error-adjacency-matrix-must-be-square#answer_275982

在 MATLAB Online 中打开

In your assignment to K, change the commas into semi-colon

K=[0 0 0 0 1 ; 0 0 0 0 2 ; 0 0 0 0 3; 0 0 0 0 4 ; 0 0 0 0 5 ; 0 0 0 0 0];

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karthikeyan Reddy Thoomu 2017-7-28

Thank you so much Walter Roberson for answering. when i tried with semicolon and run the code it shows as same error Adjacency matrix must be square, then i tried using (.^2) operator in the code as shown below clear all close all clc K=[0 0 0 0 1 ; 0 0 0 0 2 ; 0 0 0 0 3 ; 0 0 0 0 4 ; 0 0 0 0 5 ; 0 0 0 0 0]; nodes= ['A', 'B' , 'C' , 'D' , 'E' , 'F']; G = digraph(K,nodes.^2); plot(G,'Layout','circle') title('STAR TOPOLOGY')

when i run this code it shows the error as follows Error in digraph (line 247) matlab.internal.graph.constructFromEdgeList( ... How to fix it?...