File:Sunspot butterfly diagram black.svg

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Original file (SVG file, nominally 1,613 × 510 pixels, file size: 522 KB)

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Summary

[edit]
Description
English: Variation of the position and the area of sunspots. Small spots = yellow, medium size = red, large spots = black.
Deutsch: Änderung der Lage und Größe der Sonnenflecken. Kleine Flecken = gelb, mittlere Größe = rot, große Flecken = schwarz.
Date
Source
Author Con-struct
Other versions

Diagrams with contrary colors, black = small, yellow = big area:

Generated with Wikimedia SVG Chart

[edit]
Data format The source data of the chart is in the SVG image file in a clearly readable format. You see the original numbers inside of the SVG file in the form of a list such as this: 
...
1995 10.06
1996 11.75
1997 12.45
...
Content of SVG To view the data download the SVG file itself. To do so right-click this link, and then choose the option to save: File:Sunspot butterfly diagram black.svg. Launch any text editor. Open the downloaded SVG file with the text editor (usually; file menu, open). To see the list of data, search for the phrase id="graph1".
Edit SVG Please, do not use a special SVG editor such as Inkscape; the readability of the database would be destroyed. You can edit the SVG file with any text editor, for example; en: List of text editors. You can view the edited SVG file in various web browsers. As of 2011, all major desktop browsers, and many minor ones, have some level of SVG support. See: en: Scalable Vector Graphics#Support for SVG in web browsers. When satisfied with your edits, upload the edited SVG file with the link labeled "Upload a new version of this file".
 
W3C-validity not checked.
 
This chart was created with Wikimedia SVG Chart.
 
This chart uses embedded text/digits.
Code to generate SVG See: File talk:Sunspot butterfly diagram black.svg. Documentation see: Wikimedia SVG Chart.

Use of the source data

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  • Basis is the corrected real area of a whole sunspot. E.g. this on the 1960-01-01 a value of 350 millionths of the visible Sun's hemisphere.
  • The position is also corrected for a better illustration. The displayed 50% latitude is not 45 but 30. The equation is
0.00456273 * (2191.67 - (90 - Abs(lat))^1.7095) * IIf(lat < 0, -1, 1)
After that the coordinates are rounded to 0.5 units.
  • The named unit ppm means the size of millionths of half Sun's hemisphere.
  • Areas lower than 2 millionths after the year 1976 are hidden. Because relevant sizes are e. g. 1000 millionths.
  • Every year is shown a group of values for each month, that means 12 groups per year. On an Latitude the size of of available spots in a month will be averaged.

Licensing

[edit]
I, the copyright holder of this work, hereby publish it under the following licenses:
GNU head 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.
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported, 2.5 Generic, 2.0 Generic and 1.0 Generic license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
You may select the license of your choice.

File history

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Date/TimeThumbnailDimensionsUserComment
current20:18, 16 September 2013Thumbnail for version as of 20:18, 16 September 20131,613 × 510 (522 KB)Con-struct (talk | contribs)2013-09-04

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