scientific user facilities, such as Argonne National Laboratory, have developed and published data analysis libraries for Igor Pro. The control and data-acquisition programs for photoelectron spectrometers of ScientaOmicron and SPECS Surface Nano Analysis GmbH save spectra in Igor Pro file formats. The “INO MAKRO” was developed in Japan for the analysis of x-ray absorption and photoemission spectra. Igor Pro has been used as platform for the modelling of impedance data. The first reported application was mechanical impedance data, specifically pneumatic performance of the lung (published in a peer reviewed article from a hospital at the east coast in USA). A more recent application is for electrochemical impedance spectroscopy data, developed at NIMS in Japan. See also List of graphing software External links Wavemetrics Inc. (manufacturer) IgorExchange Projects, extensions and code share. Igor mailing list Unofficial archive of Igor mailing list. GitHub repositories Book: "Programming in Igor Pro" (for Igor 7) Unofficial IGOR programming manual. Development funded by Wavemetrics, Inc. (for Igor 5) References Plotting software Regression and curve fitting software