![File:US first-class postage stamp rates.svg](http://upload.wikimedia.org/wikipedia/commons/thumb/5/5d/US_first-class_postage_stamp_rates.svg/600px-US_first-class_postage_stamp_rates.svg.png)
Original file (SVG file, nominally 600 × 500 pixels, file size: 16 KB)
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Contents
Summary
DescriptionUS first-class postage stamp rates.svg |
English: Time plot of prices of US first-class postage stamps. It should be noted that the green plot (adjusted value to 1984 dollars) can be misleading (i.e., jumps in value) for two reasons that I can think of. First, price of stamps is fixed through time but the adjusted value is not fixed (the plot really should be a piecewise plot not a step plot). Secondly, when the price of stamps was low (say $0.02) a jump in a single penny (to say $0.03 as on July 6, 1932) was a relatively large percentage increase. |
Date | |
Source | Own work. The image was rendered with gnuplot and tweaked in Inkscape. |
Author | en:User:Cburnett |
Permission (Reusing this file) |
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Licensing
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
gnuplot code
The following is the gnuplot code to generate this plot. Additional processing was done in inkscape to tidy up the label font sizes, force a white background, and center the title to satisfy the mediawiki rendering engine. The gnuplot code is released under both GFDL and GPL, take your pick.
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | |
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This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue |
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This work is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or any later version. This work is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose. See version 2 and version 3 of the GNU General Public License for more details.http://www.gnu.org/licenses/gpl.htmlGPLGNU General Public Licensetruetrue |
# Save as an SVG set terminal svg size 600 500 # Set the title set title "US Postage Stamp Rates" # Modify the x-axis set xlabel "Date" set xdata time set timefmt "%m/%d/%Y" set xtics rotate ('1/1/1880', '1/1/1890', '1/1/1900', '1/1/1910', '1/1/1920', '1/1/1930', '1/1/1940', '1/1/1950', '1/1/1960', '1/1/1970', '1/1/1980', '1/1/1990', '1/1/2000', '1/1/2010') set format x "%m/%d/%Y" set xrange ['1/1/1875':'1/1/2015'] # Modify the y-axis set ylabel "Price (US Dollars)" set format y "$%.2f" # Output file set output "plot.svg" # Push key to top-left set key top left # Ready, set, plot! plot "data.txt" using 1:2 title 'Issued Rates' with steps, \ "data.txt" using 1:3 title 'Adjusted Rates (1984 Dollars)' with steps
Source data
This source data was taken from History of United States Postal Service rates (exact revision used)
# Date Price Adjusted price in 1984 dollars 7/1/1885 0.02 0.20 11/3/1917 0.03 0.23 7/1/1919 0.02 0.12 7/6/1932 0.03 0.23 1/1/1952 0.03 0.11 8/1/1958 0.04 0.14 1/7/1963 0.05 0.16 1/7/1968 0.06 0.17 5/16/1971 0.08 0.20 3/2/1974 0.10 0.20 9/14/1975 0.10 0.19 12/31/1975 0.13 0.24 5/29/1978 0.15 0.23 3/22/1981 0.18 0.20 11/1/1981 0.20 0.22 2/17/1985 0.22 0.20 4/3/1988 0.25 0.21 2/3/1991 0.29 0.21 1/1/1995 0.32 0.21 1/10/1999 0.33 0.20 1/7/2001 0.34 0.19 6/30/2002 0.37 0.21 1/8/2006 0.39 0.20 5/14/2007 0.41 0.21 5/12/2008 0.42 5/11/2009 0.44 1/22/2012 0.45 1/27/2013 0.46
Captions
Items portrayed in this file
depicts
12 May 2007
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 03:56, 13 May 2007 | ![]() | 600 × 500 (16 KB) | Cburnett | Forced background to white, attempt to center title |
03:54, 13 May 2007 | ![]() | 600 × 500 (16 KB) | Cburnett | {{Information |Description={{en|Time plot of prices of US first-class postage stamps.}} |Source=Own work |Date=May 12, 2007 |Author=en:User:Cburnett |Permission=GFDL |other_versions= }} |