CSVをTSVに変換する

In this example, we transform a Comma Separated Values (CSV) file containing a leaderboard of gaming data into a Tab Separated Values (TSV) file. The input data shows the players' names, scores, times, and goals. We preserve the CSV column headers by enabling the "Preserve Headers" option and convert all data rows into TSV format. The resulting data is easier to work with as it's organized in neat columns

In this example, we load a CSV file containing coffee varieties and their origins. The file is quite messy, with numerous empty lines and comments, and it is hard to work with. To clean up the file, we specify the comment pattern // in the options, and the program automatically removes the comment lines from the input. Also, the empty lines are automatically removed. Once the file is cleaned up, we transform the five clean rows into five columns, each having a height of two fields.

In this example, we swap rows and columns in CSV data about team sports, the equipment used, and the number of players. The input has 5 rows and 3 columns and once rows and columns have been swapped, the output has 3 rows and 5 columns. Also notice that in the last data record, for the "Baseball" game, the number of players is missing. To create a fully-filled CSV, we use a custom message "NA", specified in the options, and fill the missing CSV field with this value.