-
Archives
- August 2023
- January 2023
- December 2022
- November 2022
- October 2022
- April 2022
- January 2022
- December 2021
- November 2021
- February 2021
- January 2021
- December 2020
- September 2020
- August 2020
- July 2020
- June 2020
- January 2020
- December 2019
- September 2019
- July 2019
- March 2019
- February 2019
- January 2019
- December 2018
- November 2018
- August 2018
- June 2018
- February 2018
- January 2018
- October 2017
- September 2017
- August 2017
- April 2017
- March 2017
- January 2017
- November 2016
- October 2016
- September 2016
- May 2016
- February 2016
- January 2016
- December 2015
- August 2015
- July 2015
- April 2015
- February 2015
- December 2014
- October 2014
- September 2014
- August 2014
- July 2014
- June 2014
- May 2014
- March 2014
- October 2013
- June 2013
- May 2013
- April 2013
- July 2012
- June 2012
- April 2012
- January 2012
- December 2011
- November 2011
- October 2011
- June 2011
- May 2011
- March 2011
- February 2011
- January 2011
- December 2010
- November 2010
- October 2010
- August 2010
- June 2010
- May 2010
- April 2010
- January 2010
- October 2009
- September 2009
- July 2009
- May 2009
- April 2009
- March 2009
- February 2009
- January 2009
- December 2008
-
Meta
Category Archives: workday
Moon phases
Icons with moon phases are very often used on web calendars. The synodic month is 29.5 days long, but for calendar purposes we can think of four weeks of 28 days. The following is a total of 28 moon phase … Continue reading
Reverse diff
Here is an example how to use grep a “reverse diff” to find different lines in sorted text files. Command grep is using options: -F, –fixed-strings PATTERN is a set of newline-separated strings -x, –line-regexp force PATTERN to match only … Continue reading
JS: Music – Oxygene
Happy New Year with inventive javascript generated music. Just 19kb js code generating Oxygène Pt. 4 by Jean-Michel Jarre 1976.
SVG: NASA “meatball” logo – code update exercise
I recently went through NASA’s “meatball” logo, originally designed by James Modarelli in 1959. Looking at the svg version of this famous logo, I was interested in the svg code. It was obviously designed by some editor and not “by … Continue reading
SVG: Resizing svg element
Sometimes there is a need to resize svg element by javascript. SVG image with pink background in the following example has initial “Fullsize” dimensions 1920×1080. SVGLength interface and more is described at https://developer.mozilla.org/en-US/docs/Web/API under letter S with prefix SVG . … Continue reading
ChatGPT: Toggle Full size html page
There is a new kid on the block: ChatGPT powered by OpenAI. And here is a test question: “How to make web page with toggle button in Javascript to resize to full screen page showing screen dimensions“. It’s fascinating to … Continue reading
SVG: Circular text
Sometimes is needed circular text. Here is few examples how it can be done. All of them are working with a circular path with radius 100, then circumference is 628. The first example is going to create circular path from … Continue reading
SVG: Pleiades
In the recent post have been described how to create spiky star. Let’s utilize that knowledge to create star cluster Pleiades from the eight brightest spiky stars. Relative size can be computed by formula sqrt(8000/POW(2,511886432;magnitude). Number 8000 is just arbitrarily … Continue reading
SVG: Spiky Star
Let’s say we would like to create spiky star. One option would be to utilize tag path. Picture below should help to explain, how to design path. In the center “C” is a unit circle with radius 1. Each spike … Continue reading
Structural formula: HydroxylAmmonium Nitrate
Here is slightly better structural formula of the HydroxylAmmonium Nitrate mentioned in the yesterday post. H N O – +
Posted in workday
Leave a comment