Graphing Tool
An interactive curve-fitting and peak-plotting tool for spectroscopy data. Set the axis ranges and increments, define a baseline, then add peaks by position, height, full width at half maximum (FWHM) and Gaussian/Lorentzian character. The summed envelope is drawn over the individual components, and each peak can be labelled directly on the plot.
You can also import your own two-column data and fit it automatically.
Open the tool in a new tab for a larger working area, or use it below.