UnGraph An application that can calculate a graph's coordinates from a static image
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UnGraph Description

Often you see a graph, chart, picture or drawing and wish you could easily get hold of the X,Y data from which it was drawn. Now, you can scan such material with any scanner or photograph it with a digital camera and UnGraph will be able to give you the coordinates with a high degree of precision. UnGraph is TWAIN compliant, giving the option to scan images directly from within the software. UnGraph can also directly import images in many formats including TIF, PCX, JPG, BMP and TGA. Images can be panned and zoomed to view and vectorize selected portions. Paint, replace and erase tools allow you to modify images at any time. Initially UnGraph needs you to enter three calibrating coordinate values in order to properly scale your original coordinate system. The calibration system can make allowance for skewing of images. It also handles logarithmic X- and/or Y-scales of graphs. Calibration data can be saved with an image to facilitate subsequent digitizing sessions. Multiple lines can be digitized during a session and a color-coding system ensures that you know which line corresponds to which dataset. Images can optionally be saved to include the results of digitizing sessions plus any painting work you have done on them. As well as the automatic line follower there is single-point mode which lets you point and click on any point you wish to digitize. This is suitable for scatter diagrams, histograms and to get height and position coordinates of selected peaks of chromatograms etc.

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