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diff --git a/noao/onedspec/irsiids/doc/subsets.hlp b/noao/onedspec/irsiids/doc/subsets.hlp new file mode 100644 index 00000000..a9f0ae68 --- /dev/null +++ b/noao/onedspec/irsiids/doc/subsets.hlp @@ -0,0 +1,49 @@ +.help subsets May85 noao.imred.iids/noao.imred.irs +.ih +NAME +subsets - Subtract pairs of spectra in a string +.ih +USAGE +subsets input records +.ih +PARAMETERS +.ls input +The root file name for the input spectra in the string. +.le +.ls records +The range of spectra indicating the elements of the string. +The names of the spectra will be formed by appending the range +elements to the input root name. +.le +.ls output +This is the root file name for the names of the spectra which will +be created by the subtraction operation. +.le +.ls start_rec +The starting record number to be appended to the root name of the +created spectra. +.le +.ih +DESCRIPTION +Pairs of spectra are formed from the input string in the order that +the record numbers would suggest. +The first spectrum in the pair is assumed to be the +principle spectrum and the second spectrum in the pair is subtracted +from the first. The result is written out as a new spectrum. + +No compensation is made for exposure time during the subtraction. +The header from the principle spectrum is assigned to the output +spectrum. + +.ih +EXAMPLES +The following example forms 50 new spectra from nite1.2001-nite1.2002, +nite1.2003-nite1.2004, ... + + cl> subsets nite1 2001-2100 + +The following example creates new spectra from the pairs nite2.2001-nite2.2002, +nite2.2003-nite2.2004 in spite of the order of the record numbers entered. + + cl> subsets nite2 2001,2003,2002,2004 +.endhelp |