| This converter supports import and export of data files in the ANDI/netCDF Mass Spectrometry Data Interchange format (formerly known as "AIA Format"). The ANDI format is supported by many Mass Spectrometer and third-party software packages. Most commercial Mass Spectrometry software products allow export to the ANDI format for interchange of data files between different data processing systems.
The ANDI Mass Spectrometry Data Interchange format is under the control of the ASTM E01.25 subcommittee on Laboratory Analytical Data Interchange Protocols and Information Management. The ANDI Mass Spectrometry format has been accepted as a data interchange standard but has not yet been formally published by the ASTM. For more up-to-date information, visit the ASTM web site at http://www.astm.org/.
Please note that this converter is compliant with Data Class 1 (Raw Data) only and conforms to V1.0.1b of the ANDI Mass Spectroscopy Data Interchange Standard as published prior to ASTM oversight.
All translators for the ANDI Mass Spectrometry format are based on the public- domain netCDF software engine provided and maintained by Unidata (see http://www.unidata.ucar.edu/packages/netcdf/ for more information). This converter uses V3.4 of the netCDF software to read and write ANDI Mass Spectrometry data files.
When importing ANDI files to SPC format, the converter will read certain sample and data source information (when available in the ANDI file) into the SPC file Audit Log. The ANDI file sample/source information will start after the "AIA_info_begin" line, and end with a "AIA_info_end" line. Please note, when processing SPC file imported from the ANDI Mass Spectrometry format, this information may not get carried into the "modified" files.
If ANDI data file has sufficient data to extract a Total Ion Chromatogram (TIC), then a chromatogram file (CGM) with the same base name as the SPC file containing all the mass spectra is created. If TIC data is not present or a conversion error occurs during TIC import, the converter will continue to import the mass spectra and will not report any errors (according to the documentation the presence of TIC data in an ANDI Mass Spectrometry file is optional). When TIC data is found and imported, the converter requires that the TIC data fields be valid; the information in the experiment type is ignored. For some implementations of the ANDI Mass Spectrometry format, this may not be correct and will cause the converter to incorrectly create a CGM file of TIC data when none is present, or not create it when the TIC data is actually there.
This converter supports import of measured Mass Spectrometry data sets only. Import of ANDI Mass Spectrometry Library files is not supported. | 
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