Error in galax_samples_mx2[, 6] : subscript out of bounds

General
1

I am receiving the following error message when running my code. Not sure what is the error message referring to. Any help would be appreciated.

MIX_Model =  "model{
  for (i in 1:n) {
    y[i] ~ dnorm(mu[z[i]], tau)
    z[i] ~ dcat(group_probs)
    }
    group_probs ~ ddirich(d)tau ~ dgamma(0.15, 0.1)
    for (j in 1:ngroups) {
    mu_raw[j] ~ dnorm(0, 1E-6)
    d[j] = 2sd[j] = pow(tau,-0.5)
    }
    mu = sort(mu_raw)
}"

tc2 = textConnection(MIX_Model)

mm = jags.model(tc2, data = galax_Data, n.chains = 4)

update(mm, n.iter = 100000)

samples_g = coda.samples(mm,variable.names = c("group_probs","tau","sd"),n.iter = 100000)

mydic = dic.samples(mm,n.iter = 100000)

galax_samples_mx2 = as.matrix(samples_g[[1]])

rmix = function(y, group_probs, group_means, group_sds) {
  group1_density = dnorm(y, group_means[1], group_sds[1])
  group2_density = dnorm(y, group_means[2], group_sds[2])
  mix_density = group_probs[1] * group1_density + group_probs[2] * group2_density
  return(mix_density)}

dens = rmix(scale(galaxies)[1:82,],
c(mean(galax_samples_mx2[, 1]), mean(galax_samples_mx2[, 2])),
c(mean(galax_samples_mx2[, 3]), mean(galax_samples_mx2[, 4])),
c(mean(galax_samples_mx2[, 5]), mean(galax_samples_mx2[, 6])))

plot(scale(galaxies)[1:82, ],
     dens,
     col = "red",
     xlab = "galaxies",
     type = "l")


 Error in galax_samples_mx2[, 6] : subscript out of bounds

``
2

With this code you are trying to calculate the mean of the sixth column of galax_samples_mx2 but the error message is telling you that galax_samples_mx2 doesn't have 6 columns.

If you need more specific help, please provide a proper REPRoducible EXample (reprex) illustrating your issue.

3

Thanks for your help with this. I have uploaded all the code. Thanks

4

That was not what I asked for, your example is still not reproducible since you are not providing sample data and very likely the error message is related to the structure of your data.

I'm afraid I can't help you any further without a reproducible example.

5

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