The general scheme for converting raw mass values is to bin intensity values based on the interval the corresponding mass belongs to. The general procedure is as follows: • Set the interval between bins, lower and upper bin boundaries • Calculate the number of bins to cover the range of all masses. • Centre the first bin at the minimum mass found for all the raw data. • Sum intensities whose masses are in a given bin. A mass, m, is considered to belong to a bin when c − l ≤ m < c + u , where c is the centre of the bin, l is the lower boundary and u is the upper boundary of the bin. The default bin interval is one with a lower and upper boundary of ±0.5. A function to bin masses to the nearest integer is also available. The default bin interval is one with a lower boundary of -0.3 and upper boundary of +0.7 (as per the NIST library).
英文原文如上，尤其是 • Set the interval between bins, lower and upper bin boundaries • Calculate the number of bins to cover the range of all masses. • Centre the first bin at the minimum mass found for all the raw data. • Sum intensities whose masses are in a given bin. 这四步，看不明白。
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