Unable to use specific test occurrence records with maxent()

[daniellesloan]

Hello,

For the sake of reproducible results I have already randomly split my occurrence records into training and testing, and would like to input these records into dismo::maxent. I have attempted to do this using the code below:

 mod_args
 [1] "linear=TRUE"                                                                 
 [2] "quadratic=TRUE"                                                              
 [3] "hinge=TRUE"                                                                  
 [4] "product=TRUE"                                                                
 [5] "threshold=TRUE"                                                              
 [6] "betamultiplier=3"                                                            
 [7] "randomtestpoints=40"                                                         
 [8] "jackknife=TRUE"                                                              
 [9] "responsecurves=TRUE"                                                         
[10] "testsamplesfile=C:/Users/Danielle/Downloads/presence_records_gridded_300.csv"

maxent_train <- dismo::maxent(env, # environmental variables (aka predictors)
                                occ_train, # training occurrence records
                                bgr, # background points, n = 10000
                                args = mod_args,
                                removeDuplicates = FALSE)

However when doing this I get the following error message:

Error in file(con, "r") : cannot open the connection
In addition: Warning message:
In file(con, "r") :
  cannot open file 'C:\Users\Danielle\AppData\Local\Temp\RtmpcTd0O7/raster/maxent/1115481455/species.lambdas': No such file or directory

When I remove the argument testsamplesfiles=... from mod_args, the function works as expected.

Is there a way to supply maxent with specific testing occurrence records?