{"id":3302,"date":"2023-07-18T04:52:04","date_gmt":"2023-07-18T04:52:04","guid":{"rendered":"https:\/\/statorials.org\/pl\/liczba-numpy-jest-unikalna\/"},"modified":"2023-07-18T04:52:04","modified_gmt":"2023-07-18T04:52:04","slug":"liczba-numpy-jest-unikalna","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/liczba-numpy-jest-unikalna\/","title":{"rendered":"Jak liczy\u0107 unikalne warto\u015bci w tablicy numpy (3 przyk\u0142ady)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Do zliczania unikalnych warto\u015bci w tablicy NumPy mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cych metod:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Metoda 1: Poka\u017c unikalne warto\u015bci<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>n.p. <span style=\"color: #3366ff;\">single<\/span> (my_array)\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Metoda 2: Policz liczb\u0119 unikalnych warto\u015bci<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">len<\/span> (np. <span style=\"color: #3366ff;\">unique<\/span> (my_array))<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Metoda 3: Zlicz wyst\u0105pienia ka\u017cdej unikalnej warto\u015bci<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>n.p. <span style=\"color: #3366ff;\">unique<\/span> (my_array, return_counts= <span style=\"color: #008000;\">True<\/span> )<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Poni\u017csze przyk\u0142ady pokazuj\u0105, jak w praktyce wykorzysta\u0107 ka\u017cd\u0105 metod\u0119 z nast\u0119puj\u0105c\u0105 tablic\u0105 NumPy:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np\n\n<span style=\"color: #008080;\">#create NumPy array<\/span>\nmy_array = np. <span style=\"color: #3366ff;\">array<\/span> ([1, 3, 3, 4, 4, 7, 8, 8])\n<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 1: Poka\u017c unikalne warto\u015bci<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje jak wy\u015bwietli\u0107 unikalne warto\u015bci w tablicy NumPy:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#display unique values\n<\/span>n.p. <span style=\"color: #3366ff;\">single<\/span> (my_array)\n\narray([1, 3, 4, 7, 8])\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Na wyj\u015bciu mo\u017cemy zobaczy\u0107 ka\u017cd\u0105 z unikalnych warto\u015bci w tablicy NumPy: 1, 3, 4, 7, 8.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 2: Policz liczb\u0119 unikalnych warto\u015bci<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak policzy\u0107 ca\u0142kowit\u0105 liczb\u0119 unikalnych warto\u015bci w tablicy NumPy:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\"><span style=\"color: #008080;\">#display total number of unique values<\/span>\nlen<\/span> (np. <span style=\"color: #3366ff;\">unique<\/span> (my_array))\n\n5<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Z wyniku widzimy, \u017ce w tablicy NumPy znajduje si\u0119 <strong>5<\/strong> unikalnych warto\u015bci.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 3: Zlicz wyst\u0105pienia ka\u017cdej unikalnej warto\u015bci<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak policzy\u0107 liczb\u0119 wyst\u0105pie\u0144 ka\u017cdej unikalnej warto\u015bci w tablicy NumPy:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#count occurrences of each unique value\n<\/span>n.p. <span style=\"color: #3366ff;\">unique<\/span> (my_array, return_counts= <span style=\"color: #008000;\">True<\/span> )\n\n(array([1, 3, 4, 7, 8]), array([1, 2, 2, 1, 2]))\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">Pierwsza tabela w wynikach wy\u015bwietla unikalne warto\u015bci, a druga tabela wy\u015bwietla liczb\u0119 ka\u017cdej unikalnej warto\u015bci.<\/span><\/span><\/p>\n<p> <span style=\"color: #000000;\">Mo\u017cemy u\u017cy\u0107 nast\u0119puj\u0105cego kodu, aby wydrukowa\u0107 te dane wyj\u015bciowe w \u0142atwiejszym do odczytania formacie:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#get unique values and counts of each value\n<\/span>unique, counts = np. <span style=\"color: #3366ff;\">unique<\/span> (my_array, return_counts= <span style=\"color: #008000;\">True<\/span> )\n\n<span style=\"color: #008080;\">#display unique values and counts side by side\n<\/span><span style=\"color: #008000;\">print<\/span> ( <span style=\"color: #3366ff;\">np.asarray<\/span> ((unique,counts)). <span style=\"color: #3366ff;\">T<\/span> )\n\n[[1 1]\n [3 2]\n [4 2]\n [7 1]\n [8 2]]\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Z wyniku mo\u017cemy zobaczy\u0107:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Warto\u015b\u0107 1 pojawia si\u0119 <strong>1<\/strong> raz.<\/span><\/li>\n<li> <span style=\"color: #000000;\">Warto\u015b\u0107 3 pojawia si\u0119 <strong>dwukrotnie<\/strong> .<\/span><\/li>\n<li> <span style=\"color: #000000;\">Warto\u015b\u0107 4 pojawia si\u0119 <strong>dwukrotnie<\/strong> .<\/span><\/li>\n<li> <span style=\"color: #000000;\">Warto\u015b\u0107 7 pojawia si\u0119 <strong>1<\/strong> raz.<\/span><\/li>\n<li> <span style=\"color: #000000;\">Warto\u015b\u0107 8 pojawia si\u0119 <strong>dwukrotnie<\/strong> .<\/span><\/li>\n<\/ul>\n<h2> <span style=\"color: #000000;\"><strong>Dodatkowe zasoby<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017csze samouczki wyja\u015bniaj\u0105, jak wykonywa\u0107 inne typowe operacje w Pythonie:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pl\/tryb-cyfrowy\/\" target=\"_blank\" rel=\"noopener\">Jak obliczy\u0107 tryb tablicy NumPy<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/karta-cyfrowa\/\" target=\"_blank\" rel=\"noopener\">Jak zmapowa\u0107 funkcj\u0119 na tablic\u0119 NumPy<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/numpy-sortuj-tablice-wed\u0142ug-kolumny\/\" target=\"_blank\" rel=\"noopener\">Jak posortowa\u0107 tablic\u0119 NumPy wed\u0142ug kolumny<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Do zliczania unikalnych warto\u015bci w tablicy NumPy mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cych metod: Metoda 1: Poka\u017c unikalne warto\u015bci n.p. single (my_array) Metoda 2: Policz liczb\u0119 unikalnych warto\u015bci len (np. unique (my_array)) Metoda 3: Zlicz wyst\u0105pienia ka\u017cdej unikalnej warto\u015bci n.p. unique (my_array, return_counts= True ) Poni\u017csze przyk\u0142ady pokazuj\u0105, jak w praktyce wykorzysta\u0107 ka\u017cd\u0105 metod\u0119 z nast\u0119puj\u0105c\u0105 tablic\u0105 NumPy: [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-3302","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - 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