Packages are not loaded automatically

[a-torgovitsky]

The example code should work

func_full_info <- function(df){
  beta = NULL
  y_list = sort(unique(df[,"Y"]))
  n = dim(df)[1]
  yn = length(y_list)
  for (i in 1:yn){
    beta_i = sum((df[,"Y"] == y_list[i]) * (df[,"D"] == 1))/n
    beta = c(beta,c(beta_i))
  }
  beta = as.matrix(beta)
  return(beta)
}

func_two_moment <- function(df){
  beta = matrix(c(0,0), nrow = 2)
  n = dim(df)[1]
  beta[1] = sum(df[,"Y"] * df[,"D"])/n
  beta[2] = sum(df[,"D"])/n
  return(beta)
}

N = dim(sampledata)[1]
J1 = length(unique(sampledata[,"Y"]))
yp = seq(0,1,1/(J1-1))

A_obs_twom = matrix(c(rep(0,J1), yp, rep(0,J1), rep(1, J1)), nrow = 2,
                byrow = TRUE)
A_target = matrix(c(yp, yp), nrow = 1)
tau = sqrt(log(N)/N)

dkqs_cone(df = sampledata,
          A_obs = A_obs_twom,
          A_tgt = A_target,
          func_obs = func_two_moment,
          beta_tgt = 0.375,
          bs_seed = 1,
          bs_num = 100,
          p_sig = 2,
          tau_input = tau,
          solver = "gurobi",
          cores = 1,
          progress = TRUE)

Instead I get

Error in detectCores() : could not find function "detectCores"

If I load the parallel package and try again, I get

Error in gurobi(model, params) : could not find function "gurobi"

So, it seems like packages are not being loaded correctly

[conroylau]

Done! I have added back the :: operator to the functions that require other packages.

[a-torgovitsky]

Seems solved.

But is there a way to better determine whether the user has the correct dependencies? For example, when I first tried to run, I got this

Error in { : task 1 failed - "there is no package called ‘Momocs’"

Presumably this is for something you added (maybe the progress bar?) and installing the package resolved it. But it could be mysterious to an unsuspecting end user.

How does Hadley Wickham suggest dealing with dependencies?

[conroylau]

I figure out that I missed Momocs in the description file yesterday. Does it help in importing dependencies? Thanks!

[a-torgovitsky]

I think that is the right approach. I already went and added Momocs, so I'm not sure how to check this.

[conroylau]

I tried to uninstall Momocs and then install linearprog to test. It works well on my side.

[a-torgovitsky]

Ok good, let's consider this resolved then.