mandag den 30. november 2015

Graph digitizer

Although pdf files are the current standard for the dissemination of scientific knowledge, the format comes with several, well known, drawbacks. An important limitation is the difficulty to re-use the data embedded in graphs and plots. Even with the advent of “enhanced” html versions of articles, data is still . The graphic file must be saved in a bitmap file.


Web based tool to extract numerical data from plots and graph images.

Music : Artist : Joi Veer Song : In The Dark AlbuOn. UN-SCAN-IT graph digitizer converts scanned graphs to real xy data automatically. GraphClick is a graph digitizer shareware for Mac OS X which allows to automatically retrieve the original (x,y)-data from the image of a scanned graphor fom QuickTime movies. Features automatic detection of soli dashed or dotted lines, bar charts or symbols. Supports deformed or distorted axis.


DigitizeIt - Plot Digitizer Software. If you are interested I cand send it.

It has a very a nice feature: you can remove the last points which were carelessly clicked. Bad news is that the produced data format is XML rather than plain text - but maybe I have missed something. Finally, better known cousins are: engauge- digitizer and g3data. Manual and auto digitizing. Graph digitizer comparison – ways to digitize your data (updated).


Often data is found presented in reports and references as functional X-Y type scatter or line plots. In order to use this data, it must somehow be digitized. Trace printed graphs with smooth Bezier curves. Import the data into your favorite analysis software. A screenshot is usually the easiest way to grab the chart.


Input image to be digitize e. You can type the name of the image in the editable text fiel or push Browse button to browse the file. Although I tried it with log graph and it showed a wrong result. Just your standard ugly Excel graph, created from the data captured with ImageJ.


Corresponding authors of each RCT were contacted up to four times via e-mail to obtain exact numbers that were used to . Also includes simple distance and angle measurement tools.

Extracted by two authors independently. Automatic extraction algorithms make it very easy to extract large number of data points quickly and accurately. Get data from a graph by providing calibration points.


The first step requires user input. If so, how did you like it? Does anyone have any other recommendations?

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