Plot Digitizer is an easy to use Java app that will allow you to digitize data points off of scanned plots, scaled drawings, or orthographic photographs. Includes an automatic digitization feature that can automatically digitize many types of functional data.
Plot Digitizer is a Java app used to digitize scanned plots of functional data. 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. Plot Digitizer will allow you to take a scanned image of a plot (in GIF, JPEG, or PNG format) and quickly digitize values off the plot just by clicking the mouse on each data point. The numbers can then be saved to a text file and used where ever you need them.
Plot Digitizer works with both linear and logarithmic axis scales. Besides digitizing points off of data plots, Plot Digitizer can be used to digitize other types of scanned data (such as scaled drawings or orthographic photos).
Plot Digitizer includes a special "semi-auto" digitizing feature. For plotted data that trends from left to right, you can simply indicate what data you want digitized with a thick paint brush and the program will automatically sort out grid lines, noise, etc, and will attempt to digitize the line for you. This feat is accomplished with the help of the open source autotrace image vectorization program (version 0.31.1).
Currently this feature is available and running on Mac OS X, MS Windows, and Linux running on x86 architectures, but if you want to port the autotrace program yourself, it could be made to run on other platforms too.
Here are some key features of "Plot Digitizer":
· You can recalibrate the Y axis without having to recalibrate the X axis (multiple sets of data are commonly plotted with the same X axis).
· You can insert points between two already digitized points by right clicking and choosing "Insert" from the pop-up menu.
· You can delete points by right-clicking on the points and choosing "Delete".
· You can move points by clicking and dragging them.
· You can calculate the length of a digitized line and the area enclosed by a digitized polygon of nearly arbitrary shape.
· Finally, there is also unlimited undo/redo.
What`s New in This Release: [ read full changelog ]
· The autotrace program no longer ships with Plot Digitizer and must now be installed separately. Most users didn`t use it and it was a pain to maintain autotrace in the distribution for the few people who used it. If Plot Digitizer can not find autotrace, the semi-auto button is disabled.
· Eliminated the use of the installer on Windows and Linux. It was fragile and the primary source of problems for users. The Windows platform now ships as a native Windows executable and the Linux version ships as a simple double-clickable JAR file (which will actually work on ALL platforms).
· Modified to use an ant based build system.
· Modified code-base to make use of features found in Java 1.5 and to generally clean it up.
· Picked up latest versions of underlying libraries.
