![]() Plotdigitizer allows its users to share the extracted data into numerous formats, that includes, CSV, JSON, MS Excel, Array. With Datathief, you can only export the extracted data into “.txt” files. Further, you can customize the level of magnification. PlotDigitizer is equipped with a zoom panel. This tool magnifies the portion of graphs around the cursor, so you can more accurately mark points. The zoom panel is a very useful tool, especially when you are extracting data points manually. With PlotDigitizer, you can extract the data from linear and nonlinear scales (logarithmic, date, polar, time, inverse). Axis scalesĭatathief has limited axis scales. Conversely, Datathief has no such useful features. You can crop, zoom, flip, rotate, and scale the image. In PlotDigitizer, all required image editing attributes are embedded. We need to edit the image, for example, cropping the image to remove the unwanted portion. Many a time, the image or scanned document available to us is not perfect. On the other side, PlotDigitizer, besides common formats, accepts several image formats. Images supportĭatathief accepts only standard image file formats, like PNG, JPG, GIF. In contrast, Datathief has an old, outdated GUI. PlotDigitizer provides a modern, aesthetic, and easy-to-use interface and user experience, which could save significant time for newbies. PlotDigitizer shines out among all digitizers in the user interface and user experience. Further, you can calculate distance, angle, and area on an image. With PlotDigitizer, you can extract data from XY, bar (horizontal), bar/column (vertical), ternary, polar, maps, and pie/doughnut. There is no support for other types of graphs. Graph typesĭatathief only works with XY graphs and polar diagrams. ![]() Unlike in Datathief, there is no need to install any other external dependencies. PlotDigitizer is also available for all operating systems. However, you need to install Java from its official website to execute the software. Since Datathief is coded in Java, it would run in any OS: Windows, Linux, and macOS. To access all the features, you have to purchase the pro version. Though the free version has limited features, they are ample enough for basic data extraction. PlotDigitizer, in contrast, offers its users a FREE online version. You can use it only offline after installing the software on your machine. Online interfaceĭatathief provides no web version. This guide lists and compares the differences between both software. Although Datathief is able to extract data, it lacks a lot of features and functionalities compared to PlotDigitizer, which is available at a similar price. A single license of Datathief III costs around $25. As said earlier, it is shareware, so you need to purchase the license after evaluation. ![]() Since it is written in Java, you need to have Java installed on your computer to run the software. Obviously as one comment stated, if the original plot contains an error, so does any extraction.Datathief is a shareware made in Java that is capable of extracting data from XY graphs. Except for top-right, where quite of top of each other. The plot below has all four sets, using red, green, blue and black. From practical point of view, when I combined all data, they were all on top of each other. ResultsResults will very much depend on the precision with which axis are defined, which can cause a bias. If I need to digitize a plot at the office, WebPlotDigitizer will be my tool of choice. There is a Chrome app, which should work. IT and self installed software is a no go area. In a corporate world web based is a winning thing. It has an auto mode which I like, but have to conclude that my current figure is not suitable. A zoom window so you can see in detail where you are. WebPlotDigitizer I found it again easy to use. For practical usage, it is close to PlotDigitizer which I examined last week. For importing the data in R, I found it most easy to remove the top line from the. That is, if you switch on the data dump menu item. Or shift again if you are not right at once. ![]() The points you want to add you drag from a small floating menu to the correct location. Then with the low resolution figure they were outside my screen. ![]() It is just with the high resolution figure they were all top left. I found the axis definition non intuitive, the points are basically on the screen, you just have to shift them to the correct locations. It is shareware, let me wait for 6 seconds before running. Since these two were mentioned, I thought to try them.ĭataThiefDataThief works well. WebPlotDigitizer is, as one might guess, web based. Datathief is shareware, a java program, so can run on Mac, Windows and Linux. Note that google or wikipedia has a bunch of alternatives. Two additional programs were mentioned WebPlotDigitzier and DataThief. There were quite some reactions on lasts week’s post converting plots to data. ![]()
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