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Reads an AIT data file.


x = asfreadr(filename,options)
x = asfreadr({'filename' 'filename2'},options)


ASFREADR reads an AIT spectral file (ASF, AIF, and BKH extensions).


  • filename = a text string with the name of a spectral file or a cell of strings of filenames.
    • If filename is omitted or blank, the user will be prompted to select a file graphically.
    • If filename is an empty cell {}, the user will be prompted to select a folder and then one or more AIT files in the identified folder.


  • x = takes one of two forms:
  1. If input is a single file, or multiple files containing data that can be combined (same number of data points, same x-axis range, same type of data), the output is a dataset object,
  2. If the input consists of multiple files containing data that cannot simply be combined (different number of data points, differing x-axis ranges, etc), the output is either:
a) a cell array with a dataset object for each input file if the 'nonmatching' option has value 'cell', or
b) a dataset object containing the input data combined using the MATCHVARS function if the 'nonmatching' option has value 'matchvars'.


options = a structure array with the following fields:

  • nonmatching: [ 'error' |{'matchvars'} 'cell'] governs behavior when multiple files are being read which cannot be combined due to mismatched types, sizes, etc.
    • matchvars returns a dataset object with the files' data joined using the matchvars algorithm,
    • cell returns a cell array of the files' datasets,
    • error gives an error.
  • multiselect : [ 'off' | {'on'} ] governs whether file selection dialog should allow multiple files to be selected and imported. Setting to 'off' will restrict user to importing only one file at a time.

See Also

Data Importing Formats, asdreadr, asfreadr, fluoromaxreadr, gwscanreadr, hjyreadr, jcampreadr, opusreadr, pdfreadr, pereadr, spareadr, spcreadr, writeasf, xclreadr