WebPlotDigitizer
Plot Digitizer
g3data
DataThief III
DigitizeIt
im2graph
Silkscientific UN-SCAN-IT
GraphClick
RegexPlanet Ruby
rubular
RegExr
RegEx Generator
Expresso
Reggy
The Regex Coach
Regex Widget
WebPlotDigitizer is recommended for researchers, scientists, data analysts, and students who frequently need to extract data from published graphs and charts. It is particularly useful in fields such as biology, engineering, physics, and any other areas where visual data needs to be quantitatively analyzed.
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Plot Digitizer - All-in-One Tool to Extract Data from Graphs, Plots & Images
rubular - A ruby based regular expression editor
g3data - g3data is used for extracting data from graphs.
RegExr - RegExr.com is an online tool to learn, build, and test Regular Expressions.
DataThief III - DataThief III is a program to extract (reverse engineer) data points from a graph.
RegEx Generator - RegEx Generator is a simple-to-use application that comes with the brilliance of intuitive regex and is also helping you out to test the regex.