Cell contents reference from a non-cell array object.

function bnet = mk_chmm(N, Q, Y, discrete_obs, coupled, CPD)
if nargin < 2, Q = 2; end
if nargin < 3, Y = 1; end
if nargin < 4, discrete_obs = 0; end
if nargin < 5, coupled = 1; end
if nargin < 6, rnd = 1; else rnd = 0; end

ss = N*2;
hnodes = 1:N;
onodes = (1:N)+N;

intra = zeros(ss);
for i=1:N
  intra(hnodes(i), onodes(i))=1;
end

inter = zeros(ss);
if coupled
  for i=1:N
    inter(i, max(i-1,1):min(i+1,N))=1;
  end
else
  inter(1:N, 1:N) = eye(N);
end  

ns = [Q*ones(1,N) Y*ones(1,N)]; 

eclass1 = [hnodes onodes];
eclass2 = [hnodes+ss onodes];
if discrete_obs
  dnodes = 1:ss;
else
  dnodes = hnodes;
end
bnet = mk_dbn(intra, inter, ns, 'discrete', dnodes, 'eclass1', eclass1, 'eclass2', eclass2, ...
          'observed', onodes);

if rnd
  for i=hnodes(:)'
    bnet.CPD{i} = tabular_CPD(bnet, i);
  end
  for i=onodes(:)'
    if discrete_obs
      bnet.CPD{i} = tabular_CPD(bnet, i);
    else
      bnet.CPD{i} = gaussian_CPD(bnet, i);
    end
  end
  for i=hnodes(:)'+ss
    bnet.CPD{i} = tabular_CPD(bnet, i);
  end
else
  for i=hnodes(:)'
    bnet.CPD{i} = tabular_CPD(bnet, i, CPD{i}.CPT);
  end
  for i=onodes(:)'
    if discrete_obs
      bnet.CPD{i} = tabular_CPD(bnet, i, CPD{i}.CPT);
    else
      bnet.CPD{i} = gaussian_CPD(bnet, i, CPD{i}.mean, CPD{i}.cov);
    end
  end
  for i=hnodes(:)'+ss
    bnet.CPD{i} = tabular_CPD(bnet, i, CPD{i}.CPT);
  end
end

[yihao wu]

I am getting error

Cell contents reference from a non-cell array object

Error in mk_chmm (line 89) bnet.CPD{i} = tabular_CPD(bnet, i, CPD{i}.CPT);;

Please tell me how to solve this problem.

[Walter Roberson]

This seems to have something to do with Dynamic Bayesian Networks http://www.cs.ubc.ca/~murphyk/Software/BNT/usage_dbn.html but I am not sure which software package you are using.

[yihao wu]

i use FullBNT but i still have this problem.

[Stephen23]

What class is bnet.CPD ?

[Walter Roberson]

bnet itself might not be a struct or object. For example bnet might be empty.