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User:Slashme

    From Wikipedia, the free encyclopedia
    David Richfield

    I am David Richfield, a German chemical engineer / biochemist born in South Africa. I'm also a founder member and former director ofWikimedia South Africa, the South AfricanWikimedia Chapter. I also created theparliament diagram tool, which is widely used to create diagrams for political articles on Wikipedia.

    My username comes fromIRC: "/me" is a shortcut which inserts your username.

    I enjoy learning languages,graphic design, 3D modeling withBlender,cartography onOpenStreetMap,computer programming, playingGo and promotingfree software. In 2016, I startedjuggling.

    Here's aLimerick:∫133t2dtcos⁡(3π9)=ln⁡(e3){\displaystyle \int _{1}^{\sqrt[{3}]{3}}\!t^{2}\,dt\cos({\frac {3\pi }{9}})=\ln({\sqrt[{3}]{e}})}

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    en-NThis user has anative understanding ofEnglish.
    af-NHierdie gebruiker het kennis vanAfrikaans opmoedertaalvlak.
    de-3Dieser Benutzer beherrschtDeutsch aufhohem Niveau.
    nl-2Deze gebruiker heeftbasiskennis van hetNederlands.
    xh-1This user hasbasic knowledge ofisiXhosa.
    ru-1Этот участник владеетрусским языком наначальном уровне.
    fr-1Cet utilisateur dispose de connaissancesde base enfrançais.
    es-1Este usuario tiene un conocimientobásico delespañol.
    it-1Questo utente può contribuire con un livelloelementare initaliano.
    el-1Αυτός ο χρήστης έχειβασικές γνώσειςΕλληνικών.
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    This user has been editing Wikipedia for more than15 years.
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    MScThis user has aMaster of Science degree inbiochemistry.
    This user has publishedpeer-reviewed articles inacademic journals.
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    you're    		This user thinks that ifyour grammar is incorrect, thenyou're in need of help.
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    whomThis userinsists upon usingwhom wherever it is called for, and fixes the errors of whomever he sees.

    Activity

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    Parliament diagram tool

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    • Schematic diagram of the House of Lords, showing government, opposition, cross-bench and speaker
      Schematic diagram of theHouse of Lords, showing government, opposition, cross-bench and speaker
    • Arch version
      Arch version
    • Another arch
      Another arch

    You can make diagrams usingthis online tool!

    I started work a while back on a tool to render svg diagrams for legislatures - I started out with a tool that spits out a rectangular diagram with a title and a legend. In May 2010, I saw some very nice arch-shaped diagrams drawn withUser:Habbit's ADSvote program requested for conversion to SVG onWP:GL/I. Instead of doing manual SVG conversion, I programmed a similar algorithm, which I now host on Wikimedia's Toolserver (link above). The source code ishosted at GitHub - Bug reports, feature requests and patches are welcome!

    The arch tool is quite popular for election results on Wikipedia, but the Westminster-style tool is still under development: a standard style has not yet been clarified, so if you use it, expect criticism and/or correction. If the output is not as you expect, consider editing withInkscape and saving the result as a "plain SVG".

    You can also upload the diagrams directly from the tool. You can see the most recent uploadshere.

    There have been significant contributions to the tool byAmbady Anand S,Ranjith Siji, andRade-Mathis.

    Pages I started

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    Don't start what you can't finish.

    Translations

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    Some pictures and animations I've contributed

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    Here are some selected files. For a more complete list, with many more pictures, seemy Commons uploads (or if you have javascript enabled, you can see them ina gallery view)

    • A small sample of boleite photographed at the Museum Reich der Kristalle in Munich.
      A small sample of boleite photographed at theMuseum Reich der Kristalle in Munich.
    • The main steroidogenic pathways. I made the first version of the svg from scratch; expanded, coloured and successfully shepherded through the featured pictures process by User:Mikael_Häggström.
      The mainsteroidogenic pathways. I made the first version of the svg from scratch; expanded, coloured and successfully shepherded through the featured pictures process byUser:Mikael_Häggström.
    • The compression action of aRotary-screw compressor
    • 3D structure of promin - was used as the illustration on WP:DYK
      3D structure ofpromin - was used as the illustration onWP:DYK
    • A W-type external-thread collet being pulled into its spindle seat with a drawbar, clamping and then releasing a shaft.
      A W-type external-thread collet being pulled into its spindle seat with a drawbar, clamping and then releasing a shaft.
    • Life cycle of Echinococcus
      Life cycle ofEchinococcus
    • Lots of thumbtacks, just for fun!
      Lots of thumbtacks, just for fun!
    • An old Cadmach tablet press
      An old Cadmachtablet press
    • Round, biconvex white tablets
      Round, biconvex whitetablets
    • Tablet failure modes
      Tablet failure modes
    • An empty pycnometer
      An emptypycnometer
    • A full pycnometer
      A fullpycnometer
    • Laboratory distillation set-up
      Laboratory distillation set-up
    • Red and white deposited hard candy
      Red and white deposited hard candy
    • Animated SVG: the rotors of a three-lobe Roots blower meshing and rotating.
      Animated SVG: the rotors of a three-lobe Roots blower meshing and rotating.
    • Chlorophyll a
    • Two snails investigate each other before mating
      Two snails investigate each other before mating
    • A specimen of Duberria lutrix
      A specimen ofDuberria lutrix
    • Green insect eggs found on a curtain
      Green insect eggs found on a curtain
    • A sundew in Jonkershoek, Stellenbosch
      A sundew in Jonkershoek,Stellenbosch
    • A cockroach in Jonkershoek, Stellenbosch
      A cockroach in Jonkershoek, Stellenbosch
    • The Painted Tree Frog
      The Painted Tree Frog
    • Parapioxys jucundus
      Parapioxys jucundus
    • The P450 catalytic cycle - thanks to User:Rob Scarrow for the correction!
      TheP450 catalytic cycle - thanks toUser:Rob Scarrow for the correction!
    • Stress vs Strain graph: re-drawn with actual stress line added
      Stress vs Strain graph: re-drawn with actual stress line added
    • Stanley Bridge in Alexandria by night during Ramadan 2009
      Stanley Bridge inAlexandria by night during Ramadan 2009
    • A graffito of Riaan Cruywagen
      A graffito ofRiaan Cruywagen
    • An SVG icon for manufacturing company stubs
      An SVG icon for manufacturing company stubs
    • Baseball stub template pic, built from parts
      Baseball stub template pic, built from parts

    Tools

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    Camera

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    I bought aCanon PowerShot A630 in April 2007, and have since started contributing photos to Wikipedia. In 2008, due to an insurance payout after a stupid accident involving seawater, it was upgraded to anA650IS, which runsCHDK, which greatly increases its flexibility. That camera was stolen in 2013, and I replaced it with anSX270HS, which at the time didn't run CHDK.

    In 2014 I bought my first DSLR, aCanon EOS 600D. It's a very nice camera! I had good success with macro photography usingextension tubes with the stock lens, but I later also bought a Tamron AF 70-300mm combination macro/telephoto lens, which gave me good results until 2025, when the connection between the lens and body became dodgy, and I wanted a new camera anyway, so I upgraded to aCanon EOS R7. It's a very nice camera! The stock lens on its own is excellent and quite flexible, and the camera'sIBIS together with thelens image stabilisation gives great hand-held performance. There is no noticeable lag on the electronic viewfinder. Having a connection to my mobile phone for remote shooting and for direct import of snapshots that I don't want to work up indarktable is also great.

    External links

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    Go, Baduk, Weiqi

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    Footnotes

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    Retrieved from "https://en.wikipedia.org/w/index.php?title=User:Slashme&oldid=1303334575"
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