{
    "intro": "<a href='IsoplotR_en.png'><img src='IsoplotR_en.png' class='centered' width=800></a> \n\n<p></p>\n\n<i>IsoplotR</i> is a free and open-source substitute for Kenneth Ludwig's popular <i>Isoplot</i> add-in to Microsoft <i>Excel</i>. <i>IsoplotR</i> is programmed in <i>R</i> and can be run in three different modes:\n\n<ol>\n<li>Online: A user-friendly Graphical User Interface (GUI) that runs in a web browser on any internet-connected device.</li> \n<li>Offline: The GUI can be run natively on any computer that has <i>R</i> installed on it. <i>R</i> is free software that is available on Windows, Mac and Linux/Unix.</li>\n<li>Command Line: Advanced users can access the full functionality of <i>IsoplotR</i> from <i>R</i>'s command line. This enables <i>IsoplotR</i> to be extended and incorporated into automation scripts.</li>\n</ol>",
    "reference": "Citable reference:",
    "intro_tab": "Introduction",
    "online": "An online GUI is hosted by the following international collaborators:\n\n<ol>\n  <li><a href='http://isoplotr.es.ucl.ac.uk/'>London</a> (UK): Pieter Vermeesch (University College London)</li><li><a href='http://isoplotr.geo.utexas.edu/'>Austin</a> (USA): Daniel Stockli (University of Texas)</li> <li><a href='http://www.isoplotr.com/isoplotr/'>Beijing</a> (China): Yang Li (Chinese Academy of Sciences)</li>\n  <li><a href='http://chinageology.org:8080/'>Changchun</a> (China): Qiuye Yu (Changchun Institute of Technology)</li>\n <li><a href='https://isoplotr.sysu.edu.cn/isoplotr/'>Guangzhou</a> (China): Dengfeng Li (Sun Yat-Sen University)</li>\n  <!-- <li><a href='https://shiny.bgs.ac.uk/IsoplotR/'>Keyworth</a> (UK): Ian Millar (British Geological Survey)</li>\n-->  <li><a href='http://isoplotr.lateandes.com/'>Salta</a> (Argentina): Sof&iacute;a Bordese (LA.TE.ANDES)</li>\n  <li><a href='http://isoplotr.geol.ucsb.edu/isoplotr/'>Santa Barbara</a> (USA): John Cottle (University of California)</li>\n</ol>\n\nClick on one of the yellow boxes below to select a nearby mirror:",
    "online_tab": "Online",
    "extra_mirrors": "If you would like to make your own <tt>IsoplotR</tt> mirror available to the world via this website, then please get in touch with me at <i>p.vermeesch [at] ucl.ac.uk</i>.",
    "offline_tab": "Offline",
    "offline_1": "To run the offline version of the program, install <i>R</i> from <a href='http://r-project.org'>http://r-project.org</a> and enter the following command at the prompt:",
    "offline_2": "Once the package has been installed, you can run the browser-based graphical user interface by typing:",
    "offline_3": "This will open a new tab in your internet browser. To stop the GUI, enter the following command at the prompt:",
    "contribute": "<p></p>\n\nUsers can contribute to <tt>IsoplotR</tt>'s development in a number of ways:\n\n<ol>\n  <li>Any feedback and bug reports are gratefully accepted. If you encounter any problems, then please send a reproducible example in a <tt>.csv</tt> (if you use the command line) or <tt>.json</tt> (if you use the GUI) format to <i>p.vermeesch [at] ucl.ac.uk</i> and I will get back to you asap.\n  </li>\n\n  <li>If you know how to program in <tt>R</tt>, then feel free to fork <tt>Isoplot</tt>'s <a href='https://www.github.com/pvermees/IsoplotR'>source code</a> from GitHub and modify or recycle it. Submit a pull request if you have fixed a bug.\n  </li>\n\n  <li>Host a local mirror version of the online GUI. This will increase the responsiveness of the site outside the United Kingdom. <a href='https://github.com/pvermees/IsoplotRgui#setting-up-your-own-online-mirror'>Installation instructions</a> are provided on GitHub.\n  </li>\n\n  <li>Translate the user interface into a new language. Contact <i>p.vermeesch [at] ucl.ac.uk</i> to get started.\n  </li>\n\n  <li>IsoplotR is and always will be free to use. However, the development of the code and maintenance of the server infrastructure do take time and money. If you would like to make a financial contribution, then please click the button below. Cheers!\n\n    <div style='text-align:center;'>\n      <a href='https://aoc.ucl.ac.uk/alumni/donations-gbp-single?id=cb52e5e1-431e-41bd-b21c-f9615f9b88b1' class='ui-button ui-widget ui-corner-all'>GIVE NOW</a>\n    </div>\n  </li>\n\n</ol>\n",
    "commandline_tab": "Command Line",
    "news_tab": "News",
    "contribute_tab": "Contribute",
    "commandline_1": "The full functionality of <i>IsoplotR</i> can be accessed from the command line. This includes all the functions and options that are available through the GUI, and more. After installing <i>R</i> on your system from <a href='http://r-project.org'>http://r-project.org</a>, the command line functionality can be installed from <a href='https://github.com/pvermees/IsoplotR/'>Github</a> as described under the <i>Offline</i> tab. Alternatively, <i>IsoplotR</i> can also be installed from the Comprehensive R Archive Network (CRAN) by typing:",
    "commandline_2": "Example code to reproduce the figures in the <a href='http://ucl.ac.uk/~ucfbpve/papers/VermeeschGSF2018'>paper</a>:",
    "commandline_3": "Full documentation with additional examples can be viewed <a href='https://cran.r-project.org/web/packages/IsoplotR/IsoplotR.pdf'>on CRAN</a>.",
    "news_1": "IsoplotR is incrementally updated on <a href='http://github.com/pvermees/IsoplotR'>GitHub</a>, as detailed in the change log there. Updates to the <a href='https://CRAN.R-project.org/package=IsoplotR'>CRAN</a> version are less frequent and are reported below.\n\n<p></p>\n\nThe program has benefited from feedback by ",
    "news_2": ".\n\n<h3>Update history and other events</h3>\n\n<p></p><span class='stamp'>Mar 3, 2022</span>: (v.4.3) Fixed issue with detrital Stacey-Kramers correction, removed gradient function from Ludwig regression.<p></p><span class='stamp'>Oct 20, 2021</span>: (v.4.2) Added 2D U-Pb isochron regression.<p></p><span class='stamp'>Jul 9, 2021</span>: (v.4.1) Removed student t-multiplier from confidence intervals, improved corrections for secular disequilibrium and common Pb.<p></p><span class='stamp'>Jun 6, 2021</span>: (v.4.0) Expanded API; more robust handling of measured initial U-Pb disequilibrium; lots of minor bug fixes.<p></p><span class='stamp'>Apr 5, 2021</span>: (v.3.8) Calculates intercepts of Pb-Pb isochrons with Stacey-Kramers mantle evolution curve; adds Th-Pb dataset to examples; fixes colour scale of radial plots.<p></p><span class='stamp'>Apr 1, 2021</span>: Dengfeng Li hosts a new mirror at Sun Yat-Sen University in Guangzhou (China): <a href='https://isoplotr.sysu.edu.cn/isoplotr/'>https://isoplotr.sysu.edu.cn/isoplotr/</a><p></p><span class='stamp'>Mar 15, 2021</span>: (v.3.7) Changed overdispersion reporting threshold for model-1 regression from MSWD-based to p-value based. Simplified API for anchored discordia regression.<p></p><span class='stamp'>Dec 17, 2020</span>: (v.3.6) Formally added rug plot option to KDEs. Upgraded mirrors to shinyless version, increased robustness of disequilibrium correction, updated whitelist of allowable functions.<p></p><span class='stamp'>Nov 10, 2020</span>: (v.3.5) Minor bug fixes. Compatible with `shinyless' <tt>IsoplotRgui</tt><p></p><span class='stamp'>Sep 10, 2020</span>: Danny Stockli hosts a new mirror at UT Austin: <a href='http://isoplotr.geo.utexas.edu'>http://isoplotr.geo.utexas.edu</a>.</span><p></p><span class='stamp'>Jul 8, 2020</span> (v.3.4): Adds options to change the stroke colour of error ellipses (API change); introduces a log-transform to the random effects model for weighted means; and replaces the three parameter minimum age algorithm with a four parameter alternative.</span><p></p><span class='stamp'>May 4, 2020</span>: LA.TE.ANDES host a new <tt>IsoplotR</tt> mirror in Salta, Argentina: <a href='http://isoplotr.lateandes.com/'>http://isoplotr.lateandes.com/<a>\n\n<p></p>\n\n<span class='stamp'>Mar 18, 2020</span> (v.3.3): Adds Th-Pb geochronology to the toolbox.\n\n<p></p>\n\n<span class='stamp'>Jan 25, 2020</span>: Release of a Chinese language version of the graphical user interface. Thanks to Shuan Yan (Guangzhou), Pei Zhang and Hao Fang (Beijing), Qiuye Yu (Changchun), Hongcheng Guo (Lehigh), and Shihu Li (Lancaster) for the translation!\n\n<p></p>\n\n<span class='stamp'>Jan 22, 2020</span> (v.3.2): Fixes several minor bugs and increases stability.\n\n<p></p>\n\n<span class='stamp'>Oct 30, 2019</span>: Yang Li and Liguang Wu host a new <tt>IsoplotR</tt> mirror at the Chinese Academy of Sciences in Beijing: <a href='http://www.isoplotr.com/isoplotr/'> http://www.isoplotr.com/isoplotr/<a>\n\n<p></p>\n\n<span class='stamp'>Oct 8, 2019</span> (v.3.1): Unified Ludwig regression, including a new model-3 option that redefines the overdispersion parameter in terms of time rather than common Pb\ncomposition.  Various minor bug fixes.\n\n<p></p>\n\n<span class='stamp'>Aug 5, 2019</span> (v.3.0): Adds isochrons for U-(Th-)Pb data, implements U-Pb initial disequilibrium corrections using matrix exponentials, completely rewritten Ludwig regression functions.\n\n<p></p>\n\n<span class='stamp'>Jun 6, 2019</span> (v2.7): Adds new input format for U-Pb data that include <sup>208</sup>Pb and <sup>232</sup>Th; option to perform discordance filter before common Pb correction. This update changes the <tt>.json</tt> format, which may cause problems\nfor data saved in previous <tt>IsoplotR</tt> versions.\n\n<p></p>\n\n<span class='stamp'>May 24, 2019</span>: Addition of an American <tt>IsoplotR</tt> mirror at UC Santa Barbara:<br>\n<a href='http://isoplotr.geol.ucsb.edu/isoplotr/'>http://isoplotr.geol.ucsb.edu/isoplotr/</a>\n\n<p></p>\n\n<span class='stamp'>May 4, 2019</span> (v2.6): Adds inverse isochron option to K-Ca, Rb-Sr, Sm-Nd, Lu-Hf and Re-Os data. Improved dispersion estimates in model-3 regression.\n\n<p></p>\n\n<span class='stamp'>Apr 11, 2019</span>: Two new mirror <tt>IsoplotR</tt> sites come online:<br>\nUK (BGS): <a href='https://shiny.bgs.ac.uk/IsoplotR/'> https://shiny.bgs.ac.uk/IsoplotR/</a><br>\nChina (Qiuye Yu): <a href='http://chinageology.org:8080/'>http://chinageology.org:8080/</a>\n\n<p></p>\n\n<span class='stamp'>Apr 3, 2019</span> (v2.5): Several improvements, especially for the common-Pb corrections, which improve <tt>IsoplotR</tt>'s robustness to very discordant data. Prepared in the run-up to the detrital zircon U-Pb dating workshop at the Beijing SHRIMP centre.\n\n<p></p>\n\n<span class='stamp'>Mar 4, 2019</span> (v2.4): Implements initial disequilibrium corrections for U-Pb data, improved common Pb-corrections and initial ('common') non-radiogenic isotope compositions for other chronometers; increases robustness of the mixture modelling functions.\n\n<p></p>\n\n<span class='stamp'>Dec 8, 2018</span> (v2.3): Allows input uncertainties to be specified as absolute and relative errors at 1 or 2&sigma;.\n\n<p></p>\n\n<span class='stamp'>Nov 9, 2018</span> (v2.2): Adds ability to hide or omit samples from plots and calculations.\n\n<p></p>\n\n<span class='stamp'>Oct 20, 2018</span> (v2.1): Rewrote discordia regression function, which now uses the same maximum likelihood approach for 2D and 3D regression.  Added option to anchor the discordia line to the concordia line, or to a specificy common Pb composition.\n\n<p></p>\n\n<span class='stamp'>Sep 10, 2018</span> (v2.0): Adds K-Ca geochronology to the toolbox.\n\n<p></p>\n\n<span class='stamp'>Aug 13, 2018</span> (v1.4): Adds options for detrital <sup>230</sup>Th-corrections from assumed or measured detritus; more flexible weighted mean plots.\n\n<p></p>\n\n<span class='stamp'>Jun 4, 2018</span> (v1.3): Includes bug fixes relating to the 'York fit' algorithm and error formatting, and added functionality for Stacey-Kramers evolution curves and ordinary weighted mean calculation.\n\n<p></p>\n\n<span class='stamp'>May 1, 2018</span> (v1.2): Includes bug fixes relating to the MSWD of isochrons, and discordia lines in Tera-Wasserburg space. Improved flexibility for loading data from R\nmatrices and data frames.\n\n<p></p>\n\n<span class='stamp'>Apr 11, 2018</span>: IsoplotR formally introduced to the Geoscience community at <a href='https://meetingorganizer.copernicus.org/EGU2018 EGU2018-3088.pdf'>EGU</a> (Vienna).\n\n<p></p>\n\n<span class='stamp'>Apr 3, 2018</span>: IsoplotR <a href='http://ucl.ac.uk/~ucfbpve/papers/VermeeschGSF2018'>paper</a> accepted for publication in <i>Geoscience Frontiers</i> (a free and open journal for free and open software).",
    "and": "and",
    "Beijing": "Beijing",
    "Changchun": "Changchun",
    "title": "a free and extendable toolbox for geochronology",
    "translate_button": "<a class='translatelink' href='${LINK}' title='Please follow this link to help translate this text'>TRANSLATE</a>"
}
