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