Batch Operations on Multiple Files

Batch Operations on Multiple FilesΒΆ

Writing scripts that act on multiple files is largely the same as writing scripts that act on a single file: the interactions with columns, codes, and cells are the same. The scripting API includes commands that can load and save Datavyu spreadsheets. After a spreadsheet is loaded, the script can execute commands on the spreadsheet (e.g., export data, change or add columns), then open the next spreadsheet, execute commands, and so on.

This tutorial loads the spreadsheet files in a folder called datafiles that is located on the Desktop, accesses the “id”, “trial” and “foot” columns, and then sets up a loop to export the data, following the process in Use Scripts to Export Data from Datavyu.

  1. Create the output data file that you will be exporting the spreadsheet data to:

    out_file = File.expand_path("~/Desktop/DataOutput.txt")
    out = File.new(out_file,'w')
    
  2. Identify the folder that contains the spreadsheets whose data you want to export, and create a list object called filenames that lists the files in that folder:

    out_file = File.expand_path("~/Desktop/DataOutput.txt")
    out = File.new(out_file,'w')
    
    # Locate the files in the datafiles folder on the Desktop
    # and assign the list of file names to the filenames Ruby
    # object.
    filedir = File.expand_path("~/Desktop/datafiles/")
    filenames = Dir.new(filedir).entries
    
  3. Iterate through each file in filenames to see if it contains data and is a .opf Datavyu spreadsheet file. If so, load the spreadsheet data into Datavyu, and print “SUCCESSFULLY LOADED” when complete:

    out_file = File.expand_path("~/Desktop/DataOutput.txt")
    out = File.new(out_file,'w')
    filedir = File.expand_path("~/Desktop/datafiles/")
    filenames = Dir.new(filedir).entries
    
    # Iterate through each filename in the "filenames" list
    for file in filenames
       if file.include?(".opf") and file[0].chr != '.'
    
       puts "LOADING DATABASE: " + filedir+file
       $db,proj = load_db(filedir+file)
       puts "SUCCESSFULLY LOADED"
    
  4. Get the columns you are going to export using getColumn:

    out_file = File.expand_path("~/Desktop/DataOutput.txt")
    out = File.new(out_file,'w')
    filedir = File.expand_path("~/Desktop/datafiles/")
    filenames = Dir.new(filedir).entries
    
    for file in filenames
       if file.include?(".opf") and file[0].chr != '.'
    
       puts "LOADING DATABASE: " + filedir+file
       $db,proj = load_db(filedir+file)
       puts "SUCCESSFULLY LOADED"
    
       # Retrieve "id", "trial", and "foot" columns
    
       id = getColumn("id")
       trial = getColumn("trial")
       foot = getColumn("foot")
    
  5. Set up a series of for loops to iterate over each cell in the relevant columns, and then use an if to export nested cells, following the steps in Use Scripts to Export Data from Datavyu.

    out_file = File.expand_path("~/Desktop/DataOutput.txt")
    out = File.new(out_file,'w')
    filedir = File.expand_path("~/Desktop/datafiles/")
    filenames = Dir.new(filedir).entries
    
    for file in filenames
       if file.include?(".opf") and file[0].chr != '.'
    
       puts "LOADING DATABASE: " + filedir+file
       $db,proj = load_db(filedir+file)
       puts "SUCCESSFULLY LOADED"
    
       id = getColumn("id")
       trial = getColumn("trial")
       foot = getColumn("foot")
    
       # Export Data
    
       for idcell in id.cells
          for tcell in trial.cells
             for fcell in foot.cells
                if fcell.onset >= tcell.onset && fcell.offset <= tcell.offset
                   # Write the cells' codes to the output file, separated by tabs - the "\t"
                   # You must include a newline indicated, "\n" so that the next cells' codes
                   # will be output on a new line, giving them their own row.
                   out.write(idcell.idnum + "\t" + tcell.onset.to_s + "\t" +
                       tcell.offset.to_s + "\t" + tcell.trial + "\t" +
                       fcell.ordinal.to_s + "\t" + fcell.onset.to_s + "\t" +
                       fcell.offset.to_s + "\t" + fcell.side + "\n")
                   # End the if clause, and the for loops, as well as the script
                end
             end
          end
       end
    
  6. Close the filename for loop and if statement and print “FINISHED” when the script has finished exporting all the spreadsheet files’ data to the output file.

    require 'Datavyu_API.rb'
     begin
    
       out_file = File.expand_path("~/Desktop/DataOutput.txt")
       out = File.new(out_file,'w')
       filedir = File.expand_path("~/Desktop/datafiles/")
       filenames = Dir.new(filedir).entries
    
       for file in filenames
          if file.include?(".opf") and file[0].chr != '.'
    
          puts "LOADING DATABASE: " + filedir+file
          $db,proj = load_db(filedir+file)
          puts "SUCCESSFULLY LOADED"
    
          id = getColumn("id")
          trial = getColumn("trial")
          foot = getColumn("foot")
    
          # Export Data
    
          for idcell in id.cells
             for tcell in trial.cells
                for fcell in foot.cells
                   if fcell.onset >= tcell.onset && fcell.offset <= tcell.offset
    
                      # Write the cells' codes to the output file, separated by tabs - the "\t"
                      # You must include a newline indicated, "\n" so that the next cells' codes
                      # will be output on a new line, giving them their own row.
                      out.write(idcell.idnum + "\t" + tcell.onset.to_s + "\t" +
                          tcell.offset.to_s + "\t" + tcell.trial + "\t" +
                          fcell.ordinal.to_s + "\t" + fcell.onset.to_s + "\t" +
                          fcell.offset.to_s + "\t" + fcell.side + "\n")
                      # End the if clause, and the for loops, as well as the script
                      end
                   end
                end
             end
    
          end
       end
    
       puts "FINISHED!"
    
       end
    
    # End the script
    end