The data can be stored in the input file in either SEQUENTIAL or INTERLACED mode. In SEQUENTIAL files, the data from each channel is in a contiguous block: the data from channel 1 appears in the file first, then all the data from channel 2, etc.. For SEQUENTIAL files, you must also specify the NUM_SAMPS per series. In INTERLACED files, the channels are interleaved: the first point from channel 1 is followed by the first point from channel 2, followed by the first points of the rest of the channels, then comes the second point of channel 1, then the second point of channel 2, etc. until all the points in the file are imported. An ASCII table where each column is a unique series or channel is INTERLACED. Defaults to INTERLACED.
A positive integer value specifying the number of Series to import. This keyword is required for all multi-channel imports. Defaults to 1.
A positive integer (the word ALL, or a list of positive integers for multi-channel files) to specify the number of samples (data values) for each Series to import. This keyword is required for SEQUENTIAL multi-channel imports, and must be numeric. You can use NUM_SAMPS to truncate the number of points per Series to import. Defaults to ALL.
A positive integer specifying the number of columns in the input file. NUM_COLUMNS is the total number of interlaced series in the file, as opposed to the number of series which are to be imported (NUM_SERIES). Use with interlaced multi-channel files when you want to import fewer Series than are present in the file. Use NUM_SERIES and COLUMN in conjunction with this keyword. Defaults to 1 or the value given in NUM_SERIES (for multi-channel files).
A positive integer (or list of integers for multi-channel files) from 1 to the number of columns in the file (NUM_COLUMNS) to specify the column or offset into the data file to be imported. Defaults to 1 for the first series, and the column number of the previous series plus one for subsequent series.