Error using 'graph' function in matlab R2019b
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I have created a binarized symmetric matrix A (n x n) which represents the connectivity matrix with 1's and 0's - 1 representing the existence of an edge. This error though is general and works with any type of matrix. When using the command G=graph(A) I get the following error:
>> G=graph(A)
Error using graph.validateEdgeProperties (line 375)
Edge properties must be a table.
Error in graph/set.EdgeProperties (line 330)
G.EdgeProperties = graph.validateEdgeProperties(T);
Error in graph (line 278)
G.EdgeProperties = table(nonzeros(tril(A)), 'VariableNames', {'Weight'});
I am using R2019b. I have not used the graph function before on this version. What is the problem? It occurs irrespective of the matrix that I am using (it is a generic problem).
Thanks!
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Christine Tobler
2019-10-29
Could you try starting a new MATLAB and just enter the following code:
>> A = ones(3);
>> G = graph(A);
If this gives the error message you mentioned, could you again run the following lines on command line?
>> T = table(nonzeros(tril(A)), 'VariableNames', {'Weight'})
>> istable(T)
>> class(T)
If this returns true and 'table', we'll have a deeper mystery to solve. If not, please let us know what is being displayed for you.
5 个评论
Elie Matar
2019-10-29
Elie Matar
2019-10-29
Christine Tobler
2019-10-29
Looking at the output from "which -all" you have pasted above, it would seem that this file is the problem:
C:\Program Files\MATLAB\spm12\external\fieldtrip\compat\matlablt2013b\istable.m
The input checking for graph enters that function istable, instead of the standard istable function - and this function returns false when the input is of class 'table'.
You should be able to resolve this by removing that directory, C:\Program Files\MATLAB\spm12\external\fieldtrip\compat\matlablt2013b\ from the MATLAB path (see rmpath).
Elie Matar
2019-10-29
Ofer Perl
2021-1-31
Christine's solution also worked for me, cheers!
更多回答（1 个）
Steven Lord
2019-10-28
Can you confirm that A is a matrix? What does this show when executed immediately before you try to construct the graph from A?
whos A
If that shows A is a matrix, thinking along the same lines as Walter's idea, do you have your own functions named nonzeros, tril, or istable? Do these commands show versions of these functions other than the ones provided by MATLAB?
which -all nonzeros
which -all tril
which -all istable
3 个评论
Elie Matar
2019-10-29
Steven Lord
2019-10-29
C:\Program Files\MATLAB\spm12\external\fieldtrip\compat\matlablt2013b\istable.m
This is taking precedence over istable function included in MATLAB. If possible rename it, remove it from the MATLAB path, or delete it altogether.
Elie Matar
2019-10-29
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