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Mania"},"subtitle":{"type":"html","$t":"Making sense of statistics"},"link":[{"rel":"http://schemas.google.com/g/2005#feed","type":"application/atom+xml","href":"https:\/\/www.statmania.info\/feeds\/posts\/summary"},{"rel":"self","type":"application/atom+xml","href":"https:\/\/www.blogger.com\/feeds\/1811735374964048282\/posts\/summary\/-\/R?alt=json-in-script\u0026max-results=4"},{"rel":"alternate","type":"text/html","href":"https:\/\/www.statmania.info\/search\/label\/R"},{"rel":"hub","href":"http://pubsubhubbub.appspot.com/"},{"rel":"next","type":"application/atom+xml","href":"https:\/\/www.blogger.com\/feeds\/1811735374964048282\/posts\/summary\/-\/R\/-\/R?alt=json-in-script\u0026start-index=5\u0026max-results=4"}],"author":[{"name":{"$t":"আব্দুল্যাহ আদিল 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প্রোগ্রামিং: সব কলামের তথ্য বা গ্রাফ বের করুন নিমিষেই "},"summary":{"type":"text","$t":"\u0026nbsp;ধরুন আমাদের কাছে একটি ডেটাফ্রেইম আছে যাতে অনেকগুলো কলাম আছে। এগুলোর সবগুলোর গড় , মধ্যমা বা পরিমিত ব্যবধান আমরা এক কমান্ডেই বের করতে চাই।\u0026nbsp;আজকের পোস্টে আমরা R-এর বিল্ট-ইন ডেটাসেট airquality ব্যবহার করব। এতে ৬টি কলাম বা চলক আছে। Rstudio ব্যবহার করলে আপনি View(airquality) দিয়ে ডেটাকে একনজর দেখে নিতে পারেন। Rstudio ব্যবহার না করে থাকলে প্রথমে ডেটাকে লোড করে নিতে হবে।\u0026nbsp;\u0026nbsp;\n\ndata("},"link":[{"rel":"replies","type":"application/atom+xml","href":"https:\/\/www.statmania.info\/feeds\/2727352883062379616\/comments\/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https:\/\/www.statmania.info\/2021\/07\/r-functions-to-all-cols-rows.html#comment-form","title":"0 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লিখে স্লাইড বানাই "},"summary":{"type":"text","$t":"অনলাইন ক্লাসের জন্য প্রতিদিন প্রেজেন্টেশন স্লাইড বানাতে হয়। MS পাওয়ারপয়েন্ট স্লাইডকে বিদায় জানিয়েছি এক বছর আগে। এখন স্লাইড বানাই কোড লিখে লিখে। ব্যবহার করি এক গাদা ল্যাংগুয়েজ। অন্তত সাতখানা। R, Markdown, Javascript, HTML, CSS, Tex (Latex) ও bash। প্রতিটা ল্যাংগুয়েজই অসাধারণ। মিলেমিশে টিমওয়ার্ক করে আমার মনের মতো স্লাইড বানিয়ে দেয়।\u0026nbsp;তা কোনটা কেন ইউজ করি?R: বহুমুখী কাজের জন্য। প্রথমত Rstudio এর "},"link":[{"rel":"replies","type":"application/atom+xml","href":"https:\/\/www.statmania.info\/feeds\/1152449076872936146\/comments\/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https:\/\/www.statmania.info\/2020\/09\/slide-code.html#comment-form","title":"0 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প্রোগ্রামিং: ম্যাপ আঁকুন আরও সহজে "},"summary":{"type":"text","$t":"\nদিন দিন R-এ ম্যাপ আঁকা সহজ থেকে সহজতর হচ্ছে। একটু চেষ্টা করেই কোভিড-১৯ মহামারীর চিত্র ওয়ার্ল্ড ও বাংলাদেশের ম্যাপে দেখিয়ে ফেলতে পেরেছি। কীভাবে এত কঠিন কাজ সহজ হলো সেটা বলতেই আজকের লেখা।\n\n\n\nবাংলাদেশের কোভিড-১৯ মহামারীর প্রকোপ\u0026nbsp;\n\nআগে অবশ্যই দরকারি প্যাকেজগুলো লোড করে নিতে হবে।\n\nlibrary(rgdal)\nlibrary(tidyverse)\n\nএখন প্রশ্ন হলো ম্যাপ আঁকার ডেটা পাব কোথায়? একটুও চিন্তা করবেন না। এসব ডেটা অনেক "},"link":[{"rel":"replies","type":"application/atom+xml","href":"https:\/\/www.statmania.info\/feeds\/7865792892059330005\/comments\/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https:\/\/www.statmania.info\/2020\/04\/ggplot2-map.html#comment-form","title":"1 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https:\/\/www.blogger.com\/feeds\/1811735374964048282\/posts\/default\/7865792892059330005"},{"rel":"self","type":"application/atom+xml","href":"https:\/\/www.blogger.com\/feeds\/1811735374964048282\/posts\/default\/7865792892059330005"},{"rel":"alternate","type":"text/html","href":"https:\/\/www.statmania.info\/2020\/04\/ggplot2-map.html","title":"R প্রোগ্রামিং: ম্যাপ আঁকুন আরও সহজে "}],"author":[{"name":{"$t":"আব্দুল্যাহ আদিল 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চিত্র এত দারুণও হতে পারে! "},"summary":{"type":"text","$t":"\nবিক্ষেপ চিত্র (scatter plot) এমনিতেই দারুণ। নতুন করে একে আবার দারুণ বলার আসলে হয়ত খুব বেশি কারণ নেই। কিন্তু আবার আছে।\n\nবিক্ষেপ চিত্রের মাধ্যমে আমরা দুটো সংখ্যাবাচক চলকের (quantitative variable) মধ্যে সম্পর্ক বুঝতে পারি। যেমন নীচের বিক্ষেপ চিত্রটাই দেখুন, এখানে টেস্ট ক্রিকেট খেলা দলগুলোর জেতা ও হারা ম্যাচের সংখ্যা দেখানো আছে।\n\n\nটেস্ট-খেলুড়ে দলগুলোর হারা-জেতা ম্যাচের সংখ্যা\u0026nbsp;\n\nদেখে বোঝা যাচ্ছে"},"link":[{"rel":"replies","type":"application/atom+xml","href":"https:\/\/www.statmania.info\/feeds\/5926773580818971093\/comments\/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https:\/\/www.statmania.info\/2019\/10\/new-scatter.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https:\/\/www.blogger.com\/feeds\/1811735374964048282\/posts\/default\/5926773580818971093"},{"rel":"self","type":"application/atom+xml","href":"https:\/\/www.blogger.com\/feeds\/1811735374964048282\/posts\/default\/5926773580818971093"},{"rel":"alternate","type":"text/html","href":"https:\/\/www.statmania.info\/2019\/10\/new-scatter.html","title":"বিক্ষেপ চিত্র এত দারুণও হতে পারে! 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