r.timestamp(1)

1r.timestamp(1)                Grass User's Manual               r.timestamp(1)
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NAME

6       r.timestamp  - Print/add/remove a timestamp for a raster map.
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KEYWORDS

9       raster
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SYNOPSIS

12       r.timestamp
13       r.timestamp help
14       r.timestamp map=name  [date=timestamp]
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16   Parameters:
17       map=name
18           Name of input raster map
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20       date=timestamp
21           Datetime, datetime1/datetime2, or none
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DESCRIPTION

24       This command has 2 modes of operation. If no date argument is supplied,
25       then the current timestamp for the raster map is  printed.  If  a  date
26       argument  is specified, then the timestamp for the raster map is set to
27       the specified date(s).  See EXAMPLES below.
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NOTES

30       Strings containing spaces should be quoted. For specifying a  range  of
31       time,  the  two  timestamps should be separated by a forward slash.  To
32       remove the timestamp from a raster map, use date=none.
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EXAMPLES

35       r.timestamp map=soils
36       Prints the timestamp for the "soils" raster map. If there is  no  time‐
37       stamp  for  soils,  nothing is printed. If there is a timestamp, one or
38       two time strings are printed, depending on if the timestamp for the map
39       consists of a single date or two dates (ie start and end dates).
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41            r.timestamp map=soils date='15 sep 1987'
42       Sets the timestamp for "soils" to the single date
43       "15 sep 1987"
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45            r.timestamp map=soils date='15 sep 1987/20 feb 1988'
46       Sets the timestamp for "soils" to have the start date
47       "15 sep 1987" and the end date "20 feb 1988"
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49            r.timestamp map=soils date=none
50       Removes the timestamp for the "soils" raster map
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TIMESTAMP FORMAT

53       The  timestamp  values  must  use  the format as described in the GRASS
54       datetime library.  The source tree  for  this  library  should  have  a
55       description  of  the format. For convience, the formats as of Feb, 1996
56       are reproduced here:
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58       There are two types of datetime values: absolute and relative. Absolute
59       values  specify  exact  dates  and/or times.  Relative values specify a
60       span of time. Some examples will help clarify:
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62       Absolute
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64       The general format for absolute values is:
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66       day month year [bc] hour:minute:seconds timezone
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68       day is 1-31
69       month is jan,feb,...,dec
70       year is 4 digit year
71       [bc] if present, indicates dates is BC
72       hour is 0-23 (24 hour clock)
73       mintue is 0-59
74       second is 0-59.9999 (fractions of second allowed)
75       timezone is +hhmm or -hhmm (eg, -0600)
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77       parts can be missing
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79       1994 [bc]
80       Jan 1994 [bc]
81       15 jan 1000 [bc]
82       15 jan 1994 [bc] 10 [+0000]
83       15 jan 1994 [bc] 10:00 [+0100]
84       15 jan 1994 [bc] 10:00:23.34 [-0500]
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86       Relative
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88       There are two types of relative datetime values, year- month  and  day-
89       second.     The formats are:
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91       [-] # years # months
92       [-] # days # hours # minutes # seconds
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94       The  words  years,  months,  days,  hours, minutes, seconds are literal
95       words, and the # are the numeric values.
96       Examples:
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98       2 years
99       5 months
100       2 years 5 months
101       100 days
102       15 hours 25 minutes 35.34 seconds
103       100 days 25 minutes
104       1000 hours 35.34 seconds
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106       The following are illegal because it mixes  year-month  and  day-second
107       (because the number of days in a month or in a year vary):
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109       3 months 15 days
110       3 years 10 days
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BUGS

116       Spaces in the timestamp value are required.
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AUTHOR

119       Michael Shapiro,
120       U.S.Army Construction Engineering Research Laboratory
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122       Last changed: $Date: 2003/05/06 16:14:23 $
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124       Full index
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128GRASS 6.2.2                                                     r.timestamp(1)