Tool Tip: If you ever see an old journal article like this and you want to extract the data check out g3data: Description-en: extract data from scanned grap

Tool Tip: If you ever see an old journal article like this and you want to extract the data check out g3data: Description-en: extract data from scanned graphs g3data is used for extracting data from graphs. For example, graphs are typically published in scientific journals without tables of the actual data; g3data makes the process of extracting these data easy. http://www.frantz.fi/software/g3data.php http://www.frantz.fi/software/g3data.php