{"id":2370,"date":"2023-07-22T14:05:30","date_gmt":"2023-07-22T14:05:30","guid":{"rendered":"https:\/\/statorials.org\/nl\/volgorde-van-legendes-matplotlib\/"},"modified":"2023-07-22T14:05:30","modified_gmt":"2023-07-22T14:05:30","slug":"volgorde-van-legendes-matplotlib","status":"publish","type":"post","link":"https:\/\/statorials.org\/nl\/volgorde-van-legendes-matplotlib\/","title":{"rendered":"Hoe de volgorde van elementen in de matplotlib-legenda te veranderen"},"content":{"rendered":"

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U kunt het volgende stukje code gebruiken om de volgorde van elementen in een Matplotlib-legenda te wijzigen:<\/span><\/p>\n

 #get handles and labels<\/span>\nhandles, labels = plt. gca<\/span> (). get_legend_handles_labels<\/span> ()\n\n#specify order of items in legend<\/span>\norder = [1,2,0]\n\n#add legend to plot\n<\/span>plt. legend<\/span> ([handles[idx] for<\/span> idx in<\/span> order],[labels[idx] for<\/span> idx in<\/span> order])\n<\/strong><\/pre>\n
 Het volgende voorbeeld laat zien hoe u deze syntaxis in de praktijk kunt gebruiken.<\/span><\/p>\n
 Voorbeeld: verander de volgorde van elementen in de Matplotlib-legenda<\/strong><\/span><\/h3>\n
 Stel dat we het volgende lijndiagram in Matplotlib maken:<\/span> <\/p>\n
 import<\/span> pandas as<\/span> pd\nimport<\/span> matplotlib. pyplot<\/span> as<\/span> plt\n\n#create data\n<\/span>df = pd. DataFrame<\/span> ({'points': [11, 17, 16, 18, 22, 25, 26, 24, 29],\n                   'assists': [5, 7, 7, 9, 12, 9, 9, 4, 8],\n                   'rebounds': [6, 8, 8, 10, 14, 12, 12, 10, 11]})\n\n#add lines to plot\n<\/span>plt. plot<\/span> (df['points'], label='Points', color='green')\nplt. plot<\/span> (df['assists'], label='Assists', color='steelblue')\nplt. plot<\/span> (df['rebounds'], label='Rebounds', color='purple')\n\n#add legend\n<\/span>plt. legend<\/span> ()<\/span><\/span><\/strong> <\/pre>\n
\"\"<\/p>\n
 De legenda-elementen worden geplaatst in de volgorde waarin we de lijnen aan de plot hebben toegevoegd.<\/span><\/p>\n
 We kunnen echter de volgende syntaxis gebruiken om de volgorde van de elementen in de legenda aan te passen:<\/span> <\/p>\n
 import<\/span> pandas as<\/span> pd\nimport<\/span> matplotlib. pyplot<\/span> as<\/span> plt\n\n#create data\n<\/span>df = pd. DataFrame<\/span> ({'points': [11, 17, 16, 18, 22, 25, 26, 24, 29],\n                   'assists': [5, 7, 7, 9, 12, 9, 9, 4, 8],\n                   'rebounds': [6, 8, 8, 10, 14, 12, 12, 10, 11]})\n\n#add lines to plot\n<\/span>plt. plot<\/span> (df['points'], label='Points', color='green')\nplt. plot<\/span> (df['assists'], label='Assists', color='steelblue')\nplt. plot<\/span> (df['rebounds'], label='Rebounds', color='purple')\n\n#get handles and labels<\/span>\nhandles, labels = plt. gca<\/span> (). get_legend_handles_labels<\/span> ()\n\n#specify order of items in legend<\/span>\norder = [1,2,0]\n\n#add legend to plot<\/span>\nplt. legend<\/span> ([handles[idx] for<\/span> idx in<\/span> order],[labels[idx] for<\/span> idx in<\/span> order]) \n<\/span><\/span><\/strong><\/pre>\n
\"Orde<\/p>\n
 Houd er rekening mee dat we het volgende hebben gespecificeerd:<\/span><\/p>\n