g3data: g3data (A tool for extracting data from graphs) g3data: g3data: g3data is a tool for extracting data from scanned graphs. For graphs g3data: published in scientific articles the actual data is usually not g3data: explicitly given g3data makes the process of extracting this data g3data: easy. g3data: g3data: g3data: g3data: g3data: