1r.timestamp(1) Grass User's Manual r.timestamp(1)
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6 r.timestamp - Print/add/remove a timestamp for a raster map.
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9 raster
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12 r.timestamp
13 r.timestamp help
14 r.timestamp map=name [date=timestamp] [--verbose] [--quiet]
15 Parameters:
17 map=name
18 Name of input raster map
19 date=timestamp
21 Datetime, datetime1/datetime2, or none
22
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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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.
33
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).
40 r.timestamp map=soils date='15 sep 1987'
42 Sets the timestamp for "soils" to the single date
43 "15 sep 1987"
44 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"
48 r.timestamp map=soils date=none
50 Removes the timestamp for the "soils" raster map
51
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:
57 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:
61 Absolute
63 The general format for absolute values is:
65 day month year [bc] hour:minute:seconds timezone
67 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)
76 parts can be missing
78 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]
85 Relative
87 There are two types of relative datetime values, year- month and day-
89 second. The formats are:
90 [-] # years # months
92 [-] # days # hours # minutes # seconds
93 The words years, months, days, hours, minutes, seconds are literal
95 words, and the # are the numeric values.
96 Examples:
97 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
105 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):
108 3 months 15 days
110 3 years 10 days
111
113 v.timestamp
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116 Spaces in the timestamp value are required.
117
119 Michael Shapiro,
120 U.S.Army Construction Engineering Research Laboratory
121 Last changed: $Date: 2003-05-06 18:15:08 +0200 (Tue, 06 May 2003) $
123 Full index
125 © 2003-2008 GRASS Development Team
127GRASS 6.3.0 r.timestamp(1)