Error in rownames(K) : object 'K' not found

[yy0520s]

Hi sir,
I tried to run the package using your guide :

Load required packages

install.packages('devtools')
devtools::install_git('https://github.com/chrism0dwk/wuhan.git')
library(wuhan)

Instantiate ODE model, simulate up to day 22.

simulator = NetworkODEModel(N=china_population, K=K, init_loc='Wuhan', alpha=1/4, max_t=22)

Instantiate LogLikelihood function

llik = LogLikelihood(y=china_cases, z=world_cases, N=N, K=K, W=W, sim_fun=simulator)

Find MLEs using optimisation

p_hat = optim(log(par_init), llik, control=list(fnscale=-1))

However I met a problem:

p_hat = optim(log(par_init), llik, control=list(fnscale=-1))
Error in rownames(K) : object 'K' not found
In addition: Warning message:
In rownames(K) : restarting interrupted promise evaluation

Since I do not use R very much, I cannot find the bug. Could you please help me with that? I appreciate a lot.

[TimeWz667]

This is the air travel data.
I think they did not release because of some license issue.

Dear Chris,

Is it possible to release an emulated dataset with K and W for testing and viewing the data structures?

Many thanks

[CHLAI0410]

Same here.
Having difficulty reproducing the model.
Would be nice to have a sample or knowing the format for the required aviation data K.

[HVoltBb]

K is not included. OAG data are not free.

[mqupupup]

p_hat = optim(log(par_init), llik, control=list(fnscale=-1))
Error in optim(log(par_init), llik, control = list(fnscale = -1)) :
couldn‘t find the’'par_init',I will appreciate you if you can reply me soon.

[HVoltBb]

par_init could be any reasonable list of numbers. It is just the initial values to try.

[mqupupup]

K is not included. OAG data are not free.

If possible，how much I need pay for it?