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Dagra provides a simple method to grab data from a graph. Using Bézier curves, you can quickly and accurately digitize numerical data from scanned or graphical images. Add-ins for common analysis tools get you working quickly with the new data. Graphs are great for understanding results in reports and papers, but to use those results in your own analysis, you'll want the underlying numerical data. Your analysis will be more flexible because you can easily include all the data from the graph, rather than just a few points read manually.

Extract numerical data from a graph in 3 steps with Dagra:

1. Import the graph
Dagra can import most common image formats (BMP, GIF, JPG, JPEG, PNG, TIFF, WMF, EMF). You can also use an image from the clipboard (copy a graph directory from a Acrobat PDF file, for example), or grab a screen shot.

2. Trace the data
Digitize scatter plots or quickly trace smooth curves with Dagra. Tracing curves is fast because you do not have to tediously locate every data point. Instead, Dagra uses Bezier curves that let you quickly fit a smooth, accurate line through any curve using only a few control points. Dagra uses interpolation to find all the points on the curve it needs to accurately describe your data.

3. Export the data
The traced data can be exported to comma or tab delimited text files, which can be imported into most analysis packages. A Plug-in for Microsoft Excel® and functions for Python and Mathworks Matlab® let you import data from Dagra files directly.