Plot Digitizer
Plot Digitizer is a Java-based software build for engineers, scientists, and researchers that can digitize the scanned plots of functional data. The software usually represents the data from references and reports in the form of X-Y type lines or scatter plots. The program allows you to take a scanned image of that plot in the form of JPG, PNG, or GIF and instantly digitize the values of the plot with its built-in OCR. You can manually select the data by clicking on each data point. The tool works with both linear and log axis scales. You can also digitize other data types like orthographic photos and scaled drawings.
The Plot Digitizer has a feature called axis recalibration, which allows you to re-insert points between two already digitized points. Another notable feature is the semi-automatically digitize line off a plot. Automatic digitization is dependent on the image vectorization program, which is a part of this tool. Other features include deleting the points, dragging, computing their length, computing area, zooming images, and save calibration steps for later use.
Plot Digitizer Alternatives
#1 DigitizeIt
DigitizeIt is a program that extracts and digitizes the data values scanned from charts, diagrams, and graphs that can be loaded into any image format, including gif, jpg, tiff, png, xbm, bmp, psd, xpm, pcx, pct, and tga. You get an automatic digitizing option as well as manual digitization with the manual clicking on each data value. Those data values can be transformed into any specified axes system and saved in ASCII format to use in other applications like Microcal Origin, Excel, etc.
The plotted axes can be linear, logarithmic, or reciprocal scale. You can also define and edit multiple different data sets. It can handle tilted and distorted graphs. The interface is simple to understand. Information on the x and y-axis is presented in a panel to the right, and you can hide this panel if not needed. DigitizeIt tool can zoom in, mirror, and rotate graphs allowing you to have a perfect view of all the data available. All in all, the DigitizeIt is a great tool for technical users to get values from physical graphs and further use the data in other tools.
#2 Silkscientific Plot Digitizer
Silkscientific Plot Digitizer is software that turns graphs and images into underlying x, y data automatically. It supports most of the image formats like JPG, TIFF, GIF, BMP, PNG, etc., from the camera, scanner, or another image source. Those images can be converted into strip charts, old graphs, instrumental output, and published graphs. Additionally, the Silkscientific Plot Digitizer has many graphs digitizing features like integrating peak areas, smoothing data, taking derivatives, re‑scaling graphs, and exporting the x, y data for use in other programs. The program is available for Windows from XP to Windows 10 and macOS.
The tool can digitize up to 10,000 x and y axes points per minute with full image resolution. Some other features include cyclic digitizing, manual plot digitizing, contour line digitizing, custom screen colors, raster scan mode, grid line filters, graphical data eraser, symbol recognition, and much more. All in all, Silkscientific Plot Digitizer is a great tool for digitizing the scanned image and extract plots and data from it.
#3 Automeris WebPlotDigitizer
Automeris WebPlotDigitizer is an open-source web-based tool that you can use to extract data and points from plots, images, and graphs. It supports XY, ternary diagrams, polar maps, all that in multiple image formats, including jpg, png, tiff, PSD, etc. A browser plugin is also there to quickly upload the image ad digitize it without opening the web interface. One thing to know that it’s a semi-automated tool, unlike its alternative that is automatic or manual. The Automeris WebPlotDigitizer is a handy tool to reverse engineer the image visualization data for extracting the underlying numeric and other data in it.
Automatic extraction algorithms make it easier to extract a large number of data points. Another notable feature is the ability to measure the distance or angles between multiple points. All in all, Automeris WebPlotDigitizer is a lightweight tool yet packed with all the necessary features that you can consider among its alternatives.
#4 2d Data Plotter
2d Data Plotter is a simple graph plotting Android app that you can use to plot 2-dimensional X-Y data with ease. The app is aimed at people who want convenience as well as a functional data plotting tool. You can use it in school, colleges, and universities for your projects and converting theoretical data into an experimental one. The app is multilingual with Spanish, German, English, and Portuguese support. You can change the axes range in case you want to observe a particular portion of the graph in greater detail.
Prior to that, you just need to give permission to automatically calculate axes; otherwise, manual selection must be made. You can set the axis label, insert graph caption, and arrow annotations. The interface is simple and user-friendly, even for beginners. It also lets you add data rows or delete them one by one or in bulk. It also lets you take a snapshot of the whole or a portion of the graph after you have done plotting. Al in all, 2d Data Plotter is a simple and convenient data plotting tool that you can use on the go.
#5 Lanl Plot Digitizer
Lanl Plot Digitizer is an online plot digitizer that you can use to find data points by a graphical interface. You just need to upload the image containing graphs, and it will convert it into digital values and data after scanning it. Additionally, the Lanl Plot Digitizer has many graphs digitizing features like integrating peak areas, smoothing data, taking derivatives, re‑scaling graphs, and exporting the x, y data for use in other programs.
The values can also be changed with the manual setting of data. It has an image resizing feature that enhances your final output in the highest resolution possible. All in all, Lanl Plot Digitizer is a simple tool for quickly digitizing the data in images without any complicated interface or features.
#6 GetData Graph Digitizer
GetData Graph Digitizer is a tool for digitizing plots and graphs. You can use this program to extract the original X, Y graphical data from a physical image or scanned scientific plots into digital values and then manipulate it. You can set the scale, axes, label them, set caption, and make manual coordinates. Besides automatic digitizing, you can also do it manually. The digitized pot can be exported as a TXT, XLS, XML, EPS, and DXF file format.
The automatic line tracing method is designed to digitize solid lines. You just have to choose the starting point, and the program will trace the line that will stop at the end of the point. It supports image formats including JPEG, TIFF, PCX, and BMP. The reordering tool helps you correct any mistake or reorder the points easily. All in all, the GetData Graph Digitizer is a simple yet powerful tool to digitize and extract data from scanned images.