NA in the coefficient

[Huimin721]

Dear team,

Thanks for developing the package. I was running the function on a diabetes dataset:

data = data.frame(Group = Group,ID = ID,imageID = imageID,x=x,y=y,cellType=cellType)

res = spicyR::spicy(
    cells=data,
    condition = 'Group',
    subject = 'ID',
    cores = 80)

This is how the dataset look like:

str(data)
'data.frame': 1292937 obs. of 6 variables:
$ Group : chr "Onset" "Onset" "Onset" "Onset" ...
$ ID : chr "6362" "6362" "6362" "6362" ...
$ imageID : chr "A01" "A01" "A01" "A01" ...
$ x : num 52.5 128 135.3 449.5 458.4 ...
$ y : num 0.667 0.895 0.429 1.158 1.1 ...
$ cellType: chr "acinar" "acinar" "acinar" "acinar" ...

The function will run but get a one column coefficient full of NA, and my package version is 1.19.
Could I ask why this happens? Should I set the characters to be factors?
Thanks so much!