Dagra Graph Digitizer

Dagra helps you digitize numerical data from printed graphs. Using Bezier curves, you can quickly and accurately retrieve data from scanned or graphical images. Add-ins for Excel(R), Python and Matlab let you quickly load the digitized data into these analysis tools. Dagra lets you access a wealth of printed data for:

- Design calculations

- Numerical modelling

- Simulations

- Control system development

- Comparing new results with previous work.

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 import images from the clipboard: copy a graph directory from a Acrobat PDF file, for example.

2. Trace the data

Tracing data is quick with Dagra, 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. Plug-ins for Microsoft Excel®, Python and Mathworks Matlab® let you import data from Dagra files directly.