{"id":4974,"date":"2020-02-03T07:08:15","date_gmt":"2020-02-03T06:08:15","guid":{"rendered":"https:\/\/pythonprogramming.altervista.org\/?p=4974"},"modified":"2020-02-03T07:15:39","modified_gmt":"2020-02-03T06:15:39","slug":"a-simple-chart-with-python","status":"publish","type":"post","link":"https:\/\/pythonprogramming.altervista.org\/a-simple-chart-with-python\/","title":{"rendered":"A simple Chart with Python"},"content":{"rendered":"<p>To make a simple chart bar with Python you need just matplotlib (pip install matplotlib):<\/p>\n<pre class=\"lang:default decode:true\">import matplotlib.pyplot as plt\r\na = [1, 2, 3, 4, 7, 1]\r\nind = range(len(a))\r\np = plt.bar(ind, a)\r\nplt.show(p)<\/pre>\n<p><a href=\"https:\/\/pythonprogramming.altervista.org\/wp-content\/uploads\/2020\/02\/grafico.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4975\" src=\"https:\/\/pythonprogramming.altervista.org\/wp-content\/uploads\/2020\/02\/grafico.png\" alt=\"\" width=\"426\" height=\"361\" srcset=\"https:\/\/pythonprogramming.altervista.org\/wp-content\/uploads\/2020\/02\/grafico.png 426w, https:\/\/pythonprogramming.altervista.org\/wp-content\/uploads\/2020\/02\/grafico-320x271.png 320w\" sizes=\"auto, (max-width: 426px) 100vw, 426px\" \/><\/a><\/p>\n<p>The bar method of pyplot needs and index (ind) for the number of single data into the dataset. I took the number with the built in function len applied to the dataset &#8216;a&#8217;. After the ind, we pass the dataset (a) to plt and then we show the graphic with the method show.<\/p>\n<h2>Using a function<\/h2>\n<p>In case you like to have clean code, easy to reuse, I made this code:<\/p>\n<pre class=\"lang:default decode:true  \">import matplotlib.pyplot as plt\r\n\r\ndef show_plot(x):\r\n    \"Take an array\/list and shows it\"\r\n    p = plt.bar(range(len(x)), x)\r\n    plt.show(p)\r\n\r\na = [1, 2, 3, 4, 7, 1]\r\nshow_plot(a)\r\nfrom mpld3 import plugins<\/pre>\n<h4>Utilities<\/h4>\r\n<a href=\"https:\/\/pythonprogramming.altervista.org\/mind-map-with-python\/\">\r\n<img decoding=\"async\" src=\"https:\/\/i1.wp.com\/pythonprogramming.altervista.org\/wp-content\/uploads\/2019\/12\/PYDOT.png?resize=321%2C229&ssl=1\"><\/a>\r\n<script>\r\nvar title = \"Utility\";\r\nvar links = [Mak\r\n\t\t\t e\r\n\t[\"https:\/\/pythonprogramming.altervista.org\/create-exe-from-python-script-with-images-with-pyinstaller\/\",\"Make Exe cointaining Images\"],\r\n\t[\"https:\/\/pythonprogramming.altervista.org\/send-email-to-different-people-with-python\/\",\"Send More Email at the same time\"],\r\n\t[\"https:\/\/pythonprogramming.altervista.org\/convert-some-data-into-another-format\/\",\"Convert data separation type into another\"],\r\n\t[\"https:\/\/pythonprogramming.altervista.org\/use-sublime-integrated-with-github\/\",\"Github + Sublime text 3\"],\r\n\t[\"https:\/\/pythonprogramming.altervista.org\/make-html-tables-with-pandas\/\",\"Excel to Html Table with Pandas\"],\r\n[\"https:\/\/pythonprogramming.altervista.org\/create-a-beautiful-html-table-with-python\/\",\"Beautiful Html Table made with Python\"],\r\n[\"https:\/\/pythonprogramming.altervista.org\/split-images-with-pil-aka-pillow-and-python-for-sprite-animation\/\",\"Crop images\"],\r\n\t[\"https:\/\/pythonprogramming.altervista.org\/sublime-text-snippets-how-to-use-them\/\",\"Snippets in Sublime Text\"],\r\n[\"https:\/\/pythonprogramming.altervista.org\/create-a-presentation-html-page-with-all-the-images-in-a-folder-in-a-second\/\",\"Create Html page with images using Python in seconds\"],\r\n[\"https:\/\/pythonprogramming.altervista.org\/mind-map-with-python\/\",\"Mind Maps & Python (Pydot)\"],\r\n[\"https:\/\/pythonprogramming.altervista.org\/pixelize-an-image-with-pil-and-python\/\",\"Pixelize images\"],\r\n[\"https:\/\/pythonprogramming.altervista.org\/tkinter-to-make-pdf-fast-and-free-with-text-or-html\/\",\"Create PDF with Tkinter\"],\r\n[\"\",\"Python Lauches a file in Chrome 2\"],\r\n [\"https:\/\/pythonprogramming.altervista.org\/create-an-html-page-and-launch-it-with-cefpython3-in-chrome\/\",\r\n  \"Python launches a local file in Chrome 2\"],\r\n[\"https:\/\/pythonprogramming.altervista.org\/python-to-powerpoint-2-0\/\",\"Python vs Powerpoint v.2\"],\r\n[\"https:\/\/pythonprogramming.altervista.org\/what-if-you-got-dns_probe_finished_nxdomain-with-glitch-me-sites\/\",\"Cannot open a site (dns solution)\"],\r\n['https:\/\/pythonprogramming.altervista.org\/convert-text-to-html-docx-and-pdf\/', 'Covert txt to html, docx and pdf'],\r\n['https:\/\/pythonprogramming.altervista.org\/capture-screenshot-with-python-and-lackey\/', 'Capture screenshot'],\r\n['https:\/\/pythonprogramming.altervista.org\/check-if-a-directory-exists-with-python\/', 'Check if a directory exists'],\r\n['https:\/\/pythonprogramming.altervista.org\/how-to-copy-all-the-files-in-a-directory\/', 'Copy all files in a folder'],\r\n['https:\/\/pythonprogramming.altervista.org\/put-some-order-in-my-files-with-python-with-filecollector\/', 'Copy many file on pc in one folder'],\r\n['https:\/\/pythonprogramming.altervista.org\/creare-una-tabella-con-python\/', 'Creare tabelle html con python'],\r\n['https:\/\/pythonprogramming.altervista.org\/make-an-image-with-text-with-python\/', 'Create an image with text'],\r\n['https:\/\/pythonprogramming.altervista.org\/create-an-exe-with-pyinstaller\/', 'Exe from .py (pyinstaller)'],\r\n['https:\/\/pythonprogramming.altervista.org\/create-a-test-in-html-from-a-txt-file\/', 'Format test in html from txt file'],\r\n['https:\/\/pythonprogramming.altervista.org\/freezing-dependencies-hell-on-python-2018\/', 'Freeze dependencies'],\r\n['https:\/\/pythonprogramming.altervista.org\/google-text-to-speech-example-of-gui-to-create-mp3-from-text\/', 'GUI to create MP3 (gtts)'],\r\n['https:\/\/pythonprogramming.altervista.org\/git-basic-commands-to-keep-track-of-your-project\/', 'Git and Github'],\r\n['https:\/\/pythonprogramming.altervista.org\/grab-a-web-page-without-strange-characters\/', 'Grab a web page without strange characters'],\r\n['https:\/\/pythonprogramming.altervista.org\/grab-the-text-from-a-word-document\/', 'Grab text from Word documents'],\r\n['https:\/\/pythonprogramming.altervista.org\/grab-data-text-from-the-web-with-python-and-urllib\/', 'Grab web text'],\r\n['https:\/\/pythonprogramming.altervista.org\/1563-2\/', 'Html Tables with Python'],\r\n['https:\/\/pythonprogramming.altervista.org\/join-all-images-vertically-or-horizontally\/', 'Join Images'],\r\n['https:\/\/pythonprogramming.altervista.org\/repl-with-sublime-keybinding-to-use-python-interactively\/', 'Keybind Sublime'],\r\n['https:\/\/pythonprogramming.altervista.org\/how-to-get-all-the-file-in-a-directory\/', 'List all files in the directory'],\r\n['https:\/\/pythonprogramming.altervista.org\/all-the-files-in-your-hard-drive-with-os-walk\/', \"List all hard drive's files\"],\r\n['https:\/\/pythonprogramming.altervista.org\/transform-a-png-in-a-thumbnail\/', 'Make a thumbnail (PIL)'],\r\n['https:\/\/pythonprogramming.altervista.org\/a-simple-calculator-with-tkinter\/', 'Mini-Calculator'],\r\n['https:\/\/pythonprogramming.altervista.org\/how-to-merge-all-pdf-files-present-in-a-folder\/', 'Pdf merger'],\r\n['https:\/\/pythonprogramming.altervista.org\/tkinter-a-program-start-mp4-with-ffplay\/', 'Play video with ffplay \/ os'],\r\n['https:\/\/pythonprogramming.altervista.org\/png-to-gif\/', 'Png to Gif (PIL)'],\r\n['https:\/\/pythonprogramming.altervista.org\/using-the-re-module-to-grab-numbers-in-a-text-and-make-different-tests-with-few-code\/', 'Practical example with Regex'],\r\n['https:\/\/pythonprogramming.altervista.org\/python-to-make-svg-easier-for-html-pages\/', 'Python and SVG'],\r\n['https:\/\/pythonprogramming.altervista.org\/make-python-use-your-modules\/', 'Python modules finder'],\r\n['https:\/\/pythonprogramming.altervista.org\/how-to-read-and-write-files-in-python\/', 'Read and write files'],\r\n['https:\/\/pythonprogramming.altervista.org\/rename-all-files-in-a-directory-with-python\/', 'Rename all files'],\r\n['https:\/\/pythonprogramming.altervista.org\/find-all-the-files-on-your-computer\/', 'Search all files of a type'],\r\n['https:\/\/pythonprogramming.altervista.org\/split-square-images-into-many-images-with-python-and-image_slicer\/', 'Split images'],\r\n['https:\/\/pythonprogramming.altervista.org\/split-an-image-and-rename-the-output-images\/', 'Split images'],\r\n['https:\/\/pythonprogramming.altervista.org\/python-inserting-subtitles-to-youtube-videos-on-your-wordpress-site\/', 'Subtitles for Youtube'],\r\n['https:\/\/pythonprogramming.altervista.org\/from-text-to-mp3-with-gtts-reading-external-file\/', 'Text to Mp3 (gtts)'],\r\n['https:\/\/pythonprogramming.altervista.org\/if-you-get-an-error-using-gtts-module\/', 'The gtts error'],\r\n['https:\/\/pythonprogramming.altervista.org\/create-a-true-false-test-with-random-order-of-sentences-with-python\/', 'True false test with Python'],\r\n['https:\/\/pythonprogramming.altervista.org\/unzip-and-unrar-to-extract-zipped-files-with-python-and-7zip\/', 'Unzip and Unrar'],\r\n['https:\/\/pythonprogramming.altervista.org\/use-your-own-module-on-python\/', 'Use your own modules'],\r\n['https:\/\/pythonprogramming.altervista.org\/download-a-video-from-youtube\/', 'Youtube video download']\r\n\t\t];\r\n<\/script>\r\n\r\n\r\n<script>\r\n\t\r\nif (typeof next2 != \"undefined\"){let next2 = 0;}\r\n\t\r\nnext2 = 0;\r\n\thtml = \"\";\/\/<b style='color:coral;font-size:1.2em'>Other posts about \" + title + \"<\/b><br>\";\r\nfor (address of links) \r\n{\r\n\r\n\tif (next2 == 1){\r\n\t\thtml += \"<div style='background:coral'>\";\r\n\t\thtml += \"Next link => <a href='\" + address[0] + \"'>\" + address[1] + \"<\/a>\";\r\n\t\thtml += \"<\/div><br>\";\r\n\t\tnext2 = 0;\r\n\t}\r\n\tif (address[0] == document.URL) {\r\n\t\tnext2 = 1;\r\n\t}\r\n}\r\n\r\nif (typeof next != \"undefined\") {let next = 0;}\r\nif (typeof addressStart != \"undefined\") {let addressStart = \"\";}\r\nnext = 0;\r\naddressStart = \"<a href='\";\r\nfor (address of links) {\r\n\tif (next == 1){\r\n\t\thtml += \">>>\" + addressStart + address[0] + \"'>\" + address[1] + \"<\/a><br>\";\r\n\t\tnext = 0;\r\n\t}\r\n\telse if (addressStart + address[0] != document.URL)\r\n\t{\r\n\t\thtml += addressStart + address[0] + \"'>\" + address[1] + \"<\/a><br>\";\r\n\t}\r\n\telse\r\n\t{\r\n\t\tnext = 1;\r\n\t\tnext_address = address[0]\r\n\t\tnext_title = address[1]\r\n\t\thtml += \"<span style='color:gray'>\" + address[1] + \"<\/span><br>\";\r\n\t}\r\n\r\n}\r\n\r\n\thtml += `<span style=\"font-size:8px\">Powered by <a href=\"https:\/\/pythonprogramming.altervista.org\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2673\" src=\"https:\/\/pythonprogramming.altervista.org\/wp-content\/uploads\/2019\/06\/altervista2.png\" alt=\"\" width=\"70\" height=\"25\" srcset=\"https:\/\/pythonprogramming.altervista.org\/wp-content\/uploads\/2019\/06\/altervista2.png 156w, https:\/\/pythonprogramming.altervista.org\/wp-content\/uploads\/2019\/06\/altervista2-150x56.png 150w\" sizes=\"auto, (max-width: 70px) 100vw, 70px\" \/>pythonprogramming.altervista.org<\/a><\/span>`\r\n\thtml = \"<div style='background:yellow'>\" + html + \"<\/div>\";\r\n\tdocument.write(html)\r\n<\/script>\r\n\r\n\n","protected":false},"excerpt":{"rendered":"Charts with matplotlib and pyplot\n<a class=\"moretag\" href=\"https:\/\/pythonprogramming.altervista.org\/a-simple-chart-with-python\/\"> [...]<\/a>","protected":false},"author":1,"featured_media":4975,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","footnotes":""},"categories":[324],"tags":[710,325,4,702],"class_list":["post-4974","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-matplotlib","tag-charts","tag-matplotlib","tag-python","tag-simple"],"avopt_banners_inside_post":true,"avopt_banners_on_page":true,"av_copy_from":"","av_sharing_message":"","av_sharing_allowed":true,"av_sharing_on":{"fb":[],"tw":[]},"av_allow_affiliate_banner":false,"av_allow_affiliate_multi_banner":false,"av_show_affiliation_buy_button":false,"av_post_rating":true,"av_have_post_rating_value":false,"av_is_artificial_intelligence_content":false,"_links":{"self":[{"href":"https:\/\/pythonprogramming.altervista.org\/wp-json\/wp\/v2\/posts\/4974","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pythonprogramming.altervista.org\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pythonprogramming.altervista.org\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pythonprogramming.altervista.org\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pythonprogramming.altervista.org\/wp-json\/wp\/v2\/comments?post=4974"}],"version-history":[{"count":4,"href":"https:\/\/pythonprogramming.altervista.org\/wp-json\/wp\/v2\/posts\/4974\/revisions"}],"predecessor-version":[{"id":4979,"href":"https:\/\/pythonprogramming.altervista.org\/wp-json\/wp\/v2\/posts\/4974\/revisions\/4979"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pythonprogramming.altervista.org\/wp-json\/wp\/v2\/media\/4975"}],"wp:attachment":[{"href":"https:\/\/pythonprogramming.altervista.org\/wp-json\/wp\/v2\/media?parent=4974"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pythonprogramming.altervista.org\/wp-json\/wp\/v2\/categories?post=4974"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pythonprogramming.altervista.org\/wp-json\/wp\/v2\/tags?post=4974"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}