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;
; NAME:
; cgMonths
;
; PURPOSE:
; This is a utility program for obtaining the months of the year in various string formats.
; It is primarily used for labeling axes on graphics plots.
;
;******************************************************************************************;
; ;
; Copyright (c) 2013, by Fanning Software Consulting, Inc. All rights reserved. ;
; ;
; Redistribution and use in source and binary forms, with or without ;
; modification, are permitted provided that the following conditions are met: ;
; ;
; * Redistributions of source code must retain the above copyright ;
; notice, this list of conditions and the following disclaimer. ;
; * Redistributions in binary form must reproduce the above copyright ;
; notice, this list of conditions and the following disclaimer in the ;
; documentation and/or other materials provided with the distribution. ;
; * Neither the name of Fanning Software Consulting, Inc. nor the names of its ;
; contributors may be used to endorse or promote products derived from this ;
; software without specific prior written permission. ;
; ;
; THIS SOFTWARE IS PROVIDED BY FANNING SOFTWARE CONSULTING, INC. ''AS IS'' AND ANY ;
; EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES ;
; OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT ;
; SHALL FANNING SOFTWARE CONSULTING, INC. BE LIABLE FOR ANY DIRECT, INDIRECT, ;
; INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED ;
; TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; ;
; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ;
; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ;
; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS ;
; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ;
;******************************************************************************************;
;
;+
; This is a utility program for obtaining the months of the year in various string formats.
; It is primarily used for labeling axes on graphics plots.
;
; :Categories:
; Utilities
;
; :Returns:
; The program returns a list of months as a string or string array, depending upon
; which keywords are set.
;
; :Params:
; index: in, required, type=integer
; The index of the month you are interested in returning. An integer or
; integer array from 1 to 12.
;
; :Keywords:
; abbreviation: in, optional, type=boolean, default=0
; Set this keyword if you wish to return the month as a three letter abbreviation,
; for example, "aug". Keywords may be used in conjunction with other keywords.
; allcaps: in, optional, type=boolean, default=0
; Set this keyword if you wish to return the month in all capital letters,
; for example, "AUGUST". Keywords may be used in conjunction with other keywords.
; firstletter: in, optional, type=boolean, default=0
; Set this keyword if you wish to return the month as with its first letter capitalized,
; for example, "August". Keywords may be used in conjunction with other keywords.
; lowcase: in, optional, type=boolean, default=0
; Set this keyword if you wish to return the month in all lower case letters,
; for example, "august". Keywords may be used in conjunction with other keywords.
;
; :Examples:
; Here is how to use this program::
; IDL> Print, cgMonths([2,4,6], /FirstLetter, /Abbreviation)
; Feb Apr Jun
;
; :Author:
; FANNING SOFTWARE CONSULTING::
; David W. Fanning
; 1645 Sheely Drive
; Fort Collins, CO 80526 USA
; Phone: 970-221-0438
; E-mail: david@idlcoyote.com
; Coyote's Guide to IDL Programming: http://www.idlcoyote.com
;
; :History:
; Change History::
; Written, 8 Nov 2007 by David W. Fanning.
;
; :Copyright:
; Copyright (c) 2007-2013, Fanning Software Consulting, Inc.
;-
FUNCTION cgMonths, index, $
FIRSTLETTER=firstletter, $
ALLCAPS=allcaps, $
ABBREVIATION=abbreviation, $
LOWCASE=lowcase
ON_ERROR, 2 ; Return to caller on error.
;; Was a month index passed in tothe program?
IF N_Elements(index) NE 0 THEN monthIndex = (1 > index < 12) - 1
;; Define the months.
months = ['January', 'February', 'March', 'April', 'May', 'June', $
'July', 'August', 'September', 'October', 'November', 'December']
allMonths = months
IF Keyword_Set(firstletter) THEN allMonths = StrMid(months, 0, 1)
IF Keyword_Set(abbreviation) THEN allMonths = StrMid(months, 0, 3)
IF Keyword_Set(allcaps) THEN allMonths = StrUpCase(allMonths)
IF Keyword_Set(lowcase) THEN allMonths = StrLowCase(allMonths)
IF Keyword_Set(lowcase) AND Keyword_Set(allcaps) THEN $
Message, 'Keywords LOWCASE and ALLCAPS are mutually exclusive.'
;; If an index was returned, return that month.
;; Otherwise return all the months.
IF N_Elements(monthIndex) NE 0 THEN BEGIN
RETURN, allMonths[monthIndex]
ENDIF ELSE BEGIN
RETURN, allMonths
ENDELSE
END
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