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Method

The program will work on files with up to seven dimensions. The output array contains the mean of the input arrays. Each input element may be weighted. Weighting can either be by the reciprocal of the variance, a user supplied value for each file (e.g. the total exposure time) or the mean can be unweighted. If an input element has bad quality then it will be ignored. An output element will be good unless none of the corresponding input elements were good. An output element which has been produced from fewer good pixels than its neighbours will be apparent by its larger variance. An output variance array is only produced if all the input files contain variance arrays. Quality checking is only carried out if all files contain quality, otherwise none of the files are quality checked and an output quality array is not produced.


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Next: Summing files Up: MEANDAT Prev: MEANDAT