This function identifies the relevant MODIS file paths based on
path, list of julian dates, and index. Designed to help set arguments
for the inject_modis_par function.
     
    
    Usage
    query_modis_files(path, list, index)
 
     
    
    Arguments
- path
 
A character vector specifying the path to the MODIS data.
 
- list
 
A list of julian dates.
 
- index
 
An integer specifying the index of the julian date to use.
 
 
    
    Value
    A character vector of MODIS file paths.