DMelt:General/Scientific Tools

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Scientific tools

Here we will discuss a few tools for scientific analysis of data shipped with DMelt.

Unit conversion

DataMelt can be used to easily convert between different units of measurement. Simply start DataMelt IDE and select [Tools]->[Unit conversion].


Read more in "Measurements with Units" on how to access this tool in Java/Jython programs.

LaTeX and MathML equations

Start it as [Tools]-[DragMath]


Interactive function plotter

Start it as [Tools]-[2D function plotter]


Periodic table

Start it as [Tools]-[Periodic table]


Data extraction from a figure

Use DataMelt to extract data points from image and save them into a file. Assume you have a image "example.gif" which shows some plot. You can open any image in the format PNG, JPEG or GIF. Open this image as:

You will see a windows with the image:


Now perform a calibration of X and Y axis. Select a X-range, say between 0 and 6, and type there numbers in the field X0 and X1. The use the mouse and drag the cursor along the X axis between 0 and 6. As you drag you will see a red line spanning 0 and 6.

Then calibrate the Y-axis. Select a Y-range, type it in the window to the left of the window (Y0 and Y1). Then use the mouse to draw a blue line between selected range along Y-axis.

Once the calibration is complete, start clicking with the mouse on the data line. You will see green crosses. Then select "Save data". Data will be written into a file "example.gif.unknown" in the same directory.

More information on this topic is in DMelt books