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Calculation of errors in smoothed arrays

Errors may be traced during the smoothing process. An error array must first be generated. This example takes errors from the same region of the original QPOE file.

  xs> errcreate ``xdata$rp110590.qp[6830:7029,9290:9489]'' rp90ab_err.imh
                                                 # The error file is rp90ab_err.imh 
       # The ``'' on the command line prevent IRAF's confusion with a long argument

One then sets the hidden parameters in imsmooth.

  errors = yes
  errarray = (filename of unsmoothed error array)
  error_out = (filename of output error array)