File:Leapsecond.ut1-utc.svg

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Leapsecond.ut1-utc.svg‎ (SVG file, nominally 600 × 480 pixels, file size: 142 KB)
Description
English: Plot showing the difference UT1−UTC in seconds. Vertical segments correspond to leap seconds. Red part of graph was prediction (future values) at the time the file was made.
Česky: Graf zobrazující rozdíl UT1−UTC v sekundách. Svislé úseky odpovídají přestupným sekundám. Červená část je předpověď budoucích hodnot (v okamžiku vytvoření grafu).
Date 26 September 2011(2011-09-26)
Source self-made with gnuplot using data file “finals.all” available from http://maia.usno.navy.mil/
Author User:Tomia, Petr Kadlec
Other versions

Image:Leapsecond.ut1-utc.png (slightly reworked version that is now out of date at: Image:Leap second history.svg)

W3C✓ The source code of this SVG is valid.

[edit] Licensing

I, the copyright holder of this work, hereby publish it under the following license:
PD-icon.svg This file is ineligible for copyright and therefore in the public domain, because it consists entirely of information that is common property and contains no original authorship.

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[edit] Source code

Generated using the following scripts:

wget http://maia.usno.navy.mil/ser7/finals.all

cut -c 1-2,3-4,5-6,8-15,58,59-68 --output-delimiter " " finals.all > finals-cut.txt
grep "P" finals-cut.txt > finals-pred.txt
grep "I" finals-cut.txt > finals-iers.txt

gnuplot leapsecs.gnuplot

leapsecs.gnuplot contains commands for gnuplot:

set xdata time
set timefmt "%d/%m/%Y"
set format x "%Y"
set xrange ["01/05/1984":"01/12/2010"]
set yrange [-0.8:0.8]
set grid lt 3 lc 0
unset key
set terminal svg
set output 'Leapsecond.ut1-utc.svg'
plot 'finals-iers.txt' using (sprintf("%02.0f/%02.0f/%04.0f", $3, $2, ($4 <= 51543 ? 1900 + $1 : 2000 + $1))):($6) w l lt 1 lc 2 title 'Measured', 'finals-pred.txt' using (sprintf("%02.0f/%02.0f/%04.0f", $3, $2, ($4 <= 51543 ? 1900 + $1 : 2000 + $1))):($6) w l lt 1 lc 1 title 'Predicted'
set output

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current13:02, 26 September 2011Thumbnail for version as of 13:02, 26 September 2011600 × 480 (142 KB)Mormegil (updated to current data)
23:22, 7 November 2009Thumbnail for version as of 23:22, 7 November 2009600 × 480 (136 KB)Mormegil (Updated to 2009-11-05 data)
12:31, 8 April 2009Thumbnail for version as of 12:31, 8 April 2009600 × 480 (132 KB)Mormegil (Oops! The colors were inverted!)
12:30, 8 April 2009Thumbnail for version as of 12:30, 8 April 2009600 × 480 (132 KB)Mormegil (regenerated using EOP data from 2009-04-02)
19:28, 5 November 2008Thumbnail for version as of 19:28, 5 November 2008600 × 480 (556 KB)Tomia (Updated image to 2008-11-05 data)
18:48, 2 April 2007Thumbnail for version as of 18:48, 2 April 2007600 × 480 (402 KB)Tomia (Updated image to 2007-03-29 data)
00:01, 22 November 2006Thumbnail for version as of 00:01, 22 November 2006600 × 480 (400 KB)Tomia (Updated image to 2006-11-21 data.)
19:30, 30 July 2006Thumbnail for version as of 19:30, 30 July 2006600 × 480 (395 KB)Tomia ({{Information| |Description =Plot showing the difference UT1−UTC in seconds. Vertical segments correspond to leap seconds. Red part of graph was prediction (future values) at the time the)

Global file usage

The following other wikis use this file:

Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
Width 600
Height 480
Image title Produced by GNUPLOT 4.5 patchlevel 0
Retrieved from "http://en.wikipedia.org/wiki/File:Leapsecond.ut1-utc.svg"
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