When we work in data science, geoscience or petrophysics, we often encounter data or graphs in the form of images, such as those found in publications. However, the associated data is not present, meaning it may be difficult to use in our interpretation or research.
This is where a tool like WebPlotDigitizer it becomes really useful. This online tool helps us take those image graphs and turn them into data that we can use for future research and analysis.
There are a number of areas in petrophysics and geosciences where chart digitization can be very beneficial, including:
- Extraction and digitization of letters within the service company's letter books.
- Digitizing well log measurements from images
- Digitization of publication figures for future research.
- Digitize well positions from a map
In this article we will see how we can use WebPlotDigitizer to extract data from a scatterplot made with synthetic data. In most cases, the quality of the figures we can deal with will probably be worse.
Additionally, it is important to remember that when we use data from sources, we should always cite where it came from and the methods of how that data was obtained.
After capturing the post image, it's time to upload it to WebPlotDigitizer.
To do this, first we navigate to:
File -> Load image files
Here we can choose what type of plot we face.
