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January 12, 2016 18:17
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| { | |
| "cells": [ | |
| { | |
| "cell_type": "markdown", | |
| "metadata": {}, | |
| "source": [ | |
| "# Finding and plotting the most heard artists on last.fm\n", | |
| "\n", | |
| "This notebook is a super basic use case of daru for finding a plotting the most heard artists from a dataset from last.fm.\n", | |
| "\n", | |
| "For detailed and in-depth examples see the other notebooks." | |
| ] | |
| }, | |
| { | |
| "cell_type": "code", | |
| "execution_count": 1, | |
| "metadata": { | |
| "collapsed": false | |
| }, | |
| "outputs": [ | |
| { | |
| "data": { | |
| "application/javascript": [ | |
| "if(window['d3'] === undefined ||\n", | |
| " window['Nyaplot'] === undefined){\n", | |
| " var path = {\"d3\":\"https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min\",\"downloadable\":\"http://cdn.rawgit.com/domitry/d3-downloadable/master/d3-downloadable\"};\n", | |
| "\n", | |
| "\n", | |
| "\n", | |
| " var shim = {\"d3\":{\"exports\":\"d3\"},\"downloadable\":{\"exports\":\"downloadable\"}};\n", | |
| "\n", | |
| " require.config({paths: path, shim:shim});\n", | |
| "\n", | |
| "\n", | |
| "require(['d3'], function(d3){window['d3']=d3;console.log('finished loading d3');require(['downloadable'], function(downloadable){window['downloadable']=downloadable;console.log('finished loading downloadable');\n", | |
| "\n", | |
| "\tvar script = d3.select(\"head\")\n", | |
| "\t .append(\"script\")\n", | |
| "\t .attr(\"src\", \"http://cdn.rawgit.com/domitry/Nyaplotjs/master/release/nyaplot.js\")\n", | |
| "\t .attr(\"async\", true);\n", | |
| "\n", | |
| "\tscript[0][0].onload = script[0][0].onreadystatechange = function(){\n", | |
| "\n", | |
| "\n", | |
| "\t var event = document.createEvent(\"HTMLEvents\");\n", | |
| "\t event.initEvent(\"load_nyaplot\",false,false);\n", | |
| "\t window.dispatchEvent(event);\n", | |
| "\t console.log('Finished loading Nyaplotjs');\n", | |
| "\n", | |
| "\t};\n", | |
| "\n", | |
| "\n", | |
| "});});\n", | |
| "}\n" | |
| ], | |
| "text/plain": [ | |
| "\"if(window['d3'] === undefined ||\\n window['Nyaplot'] === undefined){\\n var path = {\\\"d3\\\":\\\"https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min\\\",\\\"downloadable\\\":\\\"http://cdn.rawgit.com/domitry/d3-downloadable/master/d3-downloadable\\\"};\\n\\n\\n\\n var shim = {\\\"d3\\\":{\\\"exports\\\":\\\"d3\\\"},\\\"downloadable\\\":{\\\"exports\\\":\\\"downloadable\\\"}};\\n\\n require.config({paths: path, shim:shim});\\n\\n\\nrequire(['d3'], function(d3){window['d3']=d3;console.log('finished loading d3');require(['downloadable'], function(downloadable){window['downloadable']=downloadable;console.log('finished loading downloadable');\\n\\n\\tvar script = d3.select(\\\"head\\\")\\n\\t .append(\\\"script\\\")\\n\\t .attr(\\\"src\\\", \\\"http://cdn.rawgit.com/domitry/Nyaplotjs/master/release/nyaplot.js\\\")\\n\\t .attr(\\\"async\\\", true);\\n\\n\\tscript[0][0].onload = script[0][0].onreadystatechange = function(){\\n\\n\\n\\t var event = document.createEvent(\\\"HTMLEvents\\\");\\n\\t event.initEvent(\\\"load_nyaplot\\\",false,false);\\n\\t window.dispatchEvent(event);\\n\\t console.log('Finished loading Nyaplotjs');\\n\\n\\t};\\n\\n\\n});});\\n}\\n\"" | |
| ] | |
| }, | |
| "metadata": {}, | |
| "output_type": "display_data" | |
| }, | |
| { | |
| "data": { | |
| "text/plain": [ | |
| "true" | |
| ] | |
| }, | |
| "execution_count": 1, | |
| "metadata": {}, | |
| "output_type": "execute_result" | |
| } | |
| ], | |
| "source": [ | |
| "require 'daru'" | |
| ] | |
| }, | |
| { | |
| "cell_type": "code", | |
| "execution_count": 2, | |
| "metadata": { | |
| "collapsed": false | |
| }, | |
| "outputs": [ | |
| { | |
| "data": { | |
| "text/html": [ | |
| "<table><tr><th colspan=\"7\">Daru::DataFrame:7723220 rows: 2500 cols: 6<tr><th></th><th>artid</th><th>artname</th><th>timestamp</th><th>traid</th><th>traname</th><th>userid</th></tr><tr><td>0</td><td>e1f1e33e-2e4c-4d43-b91b-7064068d3283</td><td>Kiss</td><td>2009-05-03T12:55:00Z</td><td>0138547f-374d-49d4-8f1c-9b2c8b5c65c0</td><td>X-Ray Eyes</td><td>user_000705</td></tr><tr><td>1</td><td>e1f1e33e-2e4c-4d43-b91b-7064068d3283</td><td>Kiss</td><td>2009-05-03T12:51:28Z</td><td>22ce9a32-3510-4c8e-8151-c044a62eb4fd</td><td>Hard Times</td><td>user_000705</td></tr><tr><td>2</td><td>e1f1e33e-2e4c-4d43-b91b-7064068d3283</td><td>Kiss</td><td>2009-05-03T12:46:55Z</td><td>22ce9a32-3510-4c8e-8151-c044a62eb4fd</td><td>Hard Times</td><td>user_000705</td></tr><tr><td>3</td><td>e1f1e33e-2e4c-4d43-b91b-7064068d3283</td><td>Kiss</td><td>2009-05-03T12:42:17Z</td><td>c386b85f-1bfe-4038-b323-cb8229ab2f8b</td><td>Magic Touch</td><td>user_000705</td></tr><tr><td>4</td><td>e1f1e33e-2e4c-4d43-b91b-7064068d3283</td><td>Kiss</td><td>2009-05-03T12:37:53Z</td><td>8ec9b4f8-2d1b-4616-9ae4-4711ca328fc3</td><td>Charisma</td><td>user_000705</td></tr><tr><td>5</td><td>e1f1e33e-2e4c-4d43-b91b-7064068d3283</td><td>Kiss</td><td>2009-05-03T12:33:37Z</td><td>ff47d82e-313d-4bd0-8e61-fe61124a361b</td><td>Dirty Livin'</td><td>user_000705</td></tr><tr><td>6</td><td>e1f1e33e-2e4c-4d43-b91b-7064068d3283</td><td>Kiss</td><td>2009-05-03T12:29:39Z</td><td>3621800b-87b7-43c6-b6a3-47ea4b658407</td><td>Sure Know Something</td><td>user_000705</td></tr><tr><td>7</td><td>e1f1e33e-2e4c-4d43-b91b-7064068d3283</td><td>Kiss</td><td>2009-05-03T12:24:46Z</td><td>91cc5010-e65b-4f49-94b5-1deed61cfcc7</td><td>2,000 Man</td><td>user_000705</td></tr><tr><td>8</td><td>e1f1e33e-2e4c-4d43-b91b-7064068d3283</td><td>Kiss</td><td>2009-05-03T12:20:17Z</td><td>daa13e72-9056-476f-b431-335b2c26842d</td><td>I Was Made For Lovin' You</td><td>user_000705</td></tr><tr><td>9</td><td>33b3c323-77c2-417c-a5b4-af7e6a111cc9</td><td>The Jimi Hendrix Experience</td><td>2009-05-03T12:16:20Z</td><td>1895c79d-ae5f-40bf-bc18-83fdcd8d2842</td><td>Burning Of The Midnight Lamp</td><td>user_000705</td></tr><tr><td>10</td><td>33b3c323-77c2-417c-a5b4-af7e6a111cc9</td><td>The Jimi Hendrix Experience</td><td>2009-05-03T12:12:35Z</td><td>1ae3c250-7b16-49d4-9c71-0928724eecce</td><td>Gypsy Eyes</td><td>user_000705</td></tr><tr><td>11</td><td>33b3c323-77c2-417c-a5b4-af7e6a111cc9</td><td>The Jimi Hendrix Experience</td><td>2009-05-03T12:08:26Z</td><td>fca63fe0-c9e6-4347-92b7-21f6cf79226c</td><td>Come On, Part 1</td><td>user_000705</td></tr><tr><td>12</td><td>33b3c323-77c2-417c-a5b4-af7e6a111cc9</td><td>The Jimi Hendrix Experience</td><td>2009-05-03T12:04:59Z</td><td>36beb31d-ed74-4a49-832f-a4a38dc96bab</td><td>Long Hot Summer Night</td><td>user_000705</td></tr><tr><td>13</td><td>33b3c323-77c2-417c-a5b4-af7e6a111cc9</td><td>The Jimi Hendrix Experience</td><td>2009-05-03T12:02:08Z</td><td>4ad6064e-7d54-49a2-a134-320a1612ee27</td><td>Little Miss Strange</td><td>user_000705</td></tr><tr><td>14</td><td>33b3c323-77c2-417c-a5b4-af7e6a111cc9</td><td>The Jimi Hendrix Experience</td><td>2009-05-03T11:47:07Z</td><td>40ffef8e-b851-473a-a239-08685eab22b0</td><td>Voodoo Chile</td><td>user_000705</td></tr><tr><td>15</td><td>33b3c323-77c2-417c-a5b4-af7e6a111cc9</td><td>The Jimi Hendrix Experience</td><td>2009-05-03T11:44:43Z</td><td>feb64d01-6e05-4974-bb44-0046deca1bdb</td><td>Crosstown Traffic</td><td>user_000705</td></tr><tr><td>16</td><td>33b3c323-77c2-417c-a5b4-af7e6a111cc9</td><td>The Jimi Hendrix Experience</td><td>2009-05-03T11:42:35Z</td><td>7f9b462a-8ac5-472d-a5aa-716b3b3d169c</td><td>Have You Ever Been (To Electric Ladyland)</td><td>user_000705</td></tr><tr><td>17</td><td>33b3c323-77c2-417c-a5b4-af7e6a111cc9</td><td>The Jimi Hendrix Experience</td><td>2009-05-03T11:41:13Z</td><td>88b57468-8d58-4310-b135-c94620fcfbc1</td><td>...And The Gods Made Love</td><td>user_000705</td></tr><tr><td>18</td><td>0039c7ae-e1a7-4a7d-9b49-0cbc716821a6</td><td>Death Cab For Cutie</td><td>2009-05-02T09:24:28Z</td><td>788878e0-8965-489e-86e3-add4c1f3d134</td><td>Line Of Best Fit</td><td>user_000705</td></tr><tr><td>19</td><td>0039c7ae-e1a7-4a7d-9b49-0cbc716821a6</td><td>Death Cab For Cutie</td><td>2009-05-02T09:19:58Z</td><td>7cfc403d-18e7-4b8e-b0c4-1864ca393fbb</td><td>Fake Frowns</td><td>user_000705</td></tr><tr><td>20</td><td>0039c7ae-e1a7-4a7d-9b49-0cbc716821a6</td><td>Death Cab For Cutie</td><td>2009-05-02T09:15:03Z</td><td>34a2d7ad-6b3a-4cfc-b4ca-edfc55a6685b</td><td>Amputations</td><td>user_000705</td></tr><tr><td>21</td><td>0039c7ae-e1a7-4a7d-9b49-0cbc716821a6</td><td>Death Cab For Cutie</td><td>2009-05-02T09:11:21Z</td><td>99db2ed6-4493-481c-ac20-54ad323cb04b</td><td>The Face That Launched 1000 Shits</td><td>user_000705</td></tr><tr><td>22</td><td>0039c7ae-e1a7-4a7d-9b49-0cbc716821a6</td><td>Death Cab For Cutie</td><td>2009-05-02T09:07:44Z</td><td>269084ba-3065-4b43-a733-f491e618b26a</td><td>Sleep Spent</td><td>user_000705</td></tr><tr><td>23</td><td>0039c7ae-e1a7-4a7d-9b49-0cbc716821a6</td><td>Death Cab For Cutie</td><td>2009-05-02T09:03:54Z</td><td>96fac269-5308-4aee-827f-d01a66674694</td><td>Pictures In An Exhibition</td><td>user_000705</td></tr><tr><td>24</td><td>0039c7ae-e1a7-4a7d-9b49-0cbc716821a6</td><td>Death Cab For Cutie</td><td>2009-05-02T08:59:34Z</td><td>c29440d9-03e6-4e18-91d6-ef8bf1e1ca32</td><td>Your Bruise</td><td>user_000705</td></tr><tr><td>25</td><td>0039c7ae-e1a7-4a7d-9b49-0cbc716821a6</td><td>Death Cab For Cutie</td><td>2009-05-02T08:56:55Z</td><td>ed55b695-976e-4898-8fde-51a8e3b0e262</td><td>Champagne From A Paper Cup</td><td>user_000705</td></tr><tr><td>26</td><td>0039c7ae-e1a7-4a7d-9b49-0cbc716821a6</td><td>Death Cab For Cutie</td><td>2009-05-02T08:49:07Z</td><td>c5238d6d-9b04-496c-8674-4ea7a07aecd6</td><td>President Of What?</td><td>user_000705</td></tr><tr><td>27</td><td>0039c7ae-e1a7-4a7d-9b49-0cbc716821a6</td><td>Death Cab For Cutie</td><td>2009-05-02T08:44:34Z</td><td>bf59dfef-03a8-4270-9456-50df79da56c2</td><td>Bend To Squares</td><td>user_000705</td></tr><tr><td>28</td><td>0039c7ae-e1a7-4a7d-9b49-0cbc716821a6</td><td>Death Cab For Cutie</td><td>2009-05-01T19:08:37Z</td><td>788878e0-8965-489e-86e3-add4c1f3d134</td><td>Line Of Best Fit</td><td>user_000705</td></tr><tr><td>29</td><td>0039c7ae-e1a7-4a7d-9b49-0cbc716821a6</td><td>Death Cab For Cutie</td><td>2009-05-01T19:04:07Z</td><td>7cfc403d-18e7-4b8e-b0c4-1864ca393fbb</td><td>Fake Frowns</td><td>user_000705</td></tr><tr><td>30</td><td>0039c7ae-e1a7-4a7d-9b49-0cbc716821a6</td><td>Death Cab For Cutie</td><td>2009-05-01T18:59:12Z</td><td>34a2d7ad-6b3a-4cfc-b4ca-edfc55a6685b</td><td>Amputations</td><td>user_000705</td></tr><tr><td>31</td><td>0039c7ae-e1a7-4a7d-9b49-0cbc716821a6</td><td>Death Cab For Cutie</td><td>2009-05-01T18:55:30Z</td><td>99db2ed6-4493-481c-ac20-54ad323cb04b</td><td>The Face That Launched 1000 Shits</td><td>user_000705</td></tr><tr><td>...</td><td>...</td><td>...</td><td>...</td><td>...</td><td>...</td><td>...</td></tr><tr><td>2499</td><td>e0bba708-bdd3-478d-84ea-c706413bedab</td><td>A. R. Rahman</td><td>2009-01-12T15:26:51Z</td><td></td><td>Paper Planes (Dfa Remix)</td><td>user_000705</td></tr></table>" | |
| ], | |
| "text/plain": [ | |
| "\n", | |
| "#<Daru::DataFrame:7723220 @name = 4483d3e0-f973-4fdb-8806-1bb55958e595 @size = 2500>\n", | |
| " artid artname timestamp traid traname userid \n", | |
| " 0 e1f1e33e-2 Kiss 2009-05-03 0138547f-3 X-Ray Eyes user_00070 \n", | |
| " 1 e1f1e33e-2 Kiss 2009-05-03 22ce9a32-3 Hard Times user_00070 \n", | |
| " 2 e1f1e33e-2 Kiss 2009-05-03 22ce9a32-3 Hard Times user_00070 \n", | |
| " 3 e1f1e33e-2 Kiss 2009-05-03 c386b85f-1 Magic Touc user_00070 \n", | |
| " 4 e1f1e33e-2 Kiss 2009-05-03 8ec9b4f8-2 Charisma user_00070 \n", | |
| " 5 e1f1e33e-2 Kiss 2009-05-03 ff47d82e-3 Dirty Livi user_00070 \n", | |
| " 6 e1f1e33e-2 Kiss 2009-05-03 3621800b-8 Sure Know user_00070 \n", | |
| " 7 e1f1e33e-2 Kiss 2009-05-03 91cc5010-e 2,000 Man user_00070 \n", | |
| " 8 e1f1e33e-2 Kiss 2009-05-03 daa13e72-9 I Was Made user_00070 \n", | |
| " 9 33b3c323-7 The Jimi H 2009-05-03 1895c79d-a Burning Of user_00070 \n", | |
| " 10 33b3c323-7 The Jimi H 2009-05-03 1ae3c250-7 Gypsy Eyes user_00070 \n", | |
| " 11 33b3c323-7 The Jimi H 2009-05-03 fca63fe0-c Come On, P user_00070 \n", | |
| " 12 33b3c323-7 The Jimi H 2009-05-03 36beb31d-e Long Hot S user_00070 \n", | |
| " 13 33b3c323-7 The Jimi H 2009-05-03 4ad6064e-7 Little Mis user_00070 \n", | |
| " 14 33b3c323-7 The Jimi H 2009-05-03 40ffef8e-b Voodoo Chi user_00070 \n", | |
| " ... ... ... ... ... ... ... \n" | |
| ] | |
| }, | |
| "execution_count": 2, | |
| "metadata": {}, | |
| "output_type": "execute_result" | |
| } | |
| ], | |
| "source": [ | |
| "require 'open-uri'\n", | |
| "content = open('https://raw.githubusercontent.com/v0dro/daru/master/spec/fixtures/music_data.tsv')\n", | |
| "df = Daru::DataFrame.from_csv content, col_sep: \"\\t\"" | |
| ] | |
| }, | |
| { | |
| "cell_type": "code", | |
| "execution_count": 3, | |
| "metadata": { | |
| "collapsed": false | |
| }, | |
| "outputs": [ | |
| { | |
| "ename": "ArgumentError", | |
| "evalue": "Vector artname does not exist", | |
| "output_type": "error", | |
| "traceback": [ | |
| "\u001b[31mArgumentError\u001b[0m: Vector artname does not exist", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/daru-0.1.1/lib/daru/dataframe.rb:1210:in `block in group_by'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/daru-0.1.1/lib/daru/dataframe.rb:1210:in `each'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/daru-0.1.1/lib/daru/dataframe.rb:1210:in `group_by'\u001b[0m", | |
| "\u001b[37m(pry):6:in `<main>'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:355:in `eval'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:355:in `evaluate_ruby'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:323:in `handle_line'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:243:in `block (2 levels) in eval'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:242:in `catch'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:242:in `block in eval'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:241:in `catch'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:241:in `eval'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/backend.rb:65:in `eval'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/backend.rb:12:in `eval'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/kernel.rb:87:in `execute_request'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/kernel.rb:47:in `dispatch'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/kernel.rb:37:in `run'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/command.rb:70:in `run_kernel'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/command.rb:34:in `run'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/bin/iruby:5:in `<top (required)>'\u001b[0m", | |
| "\u001b[37m/usr/local/bin/iruby:23:in `load'\u001b[0m", | |
| "\u001b[37m/usr/local/bin/iruby:23:in `<main>'\u001b[0m" | |
| ] | |
| } | |
| ], | |
| "source": [ | |
| "# Group by artist name and call 'size' to see the number of rows each artist populates.\n", | |
| "artists = df.group_by(:artname).size" | |
| ] | |
| }, | |
| { | |
| "cell_type": "code", | |
| "execution_count": 4, | |
| "metadata": { | |
| "collapsed": false | |
| }, | |
| "outputs": [ | |
| { | |
| "ename": "NoMethodError", | |
| "evalue": "undefined method `max_index' for nil:NilClass", | |
| "output_type": "error", | |
| "traceback": [ | |
| "\u001b[31mNoMethodError\u001b[0m: undefined method `max_index' for nil:NilClass", | |
| "\u001b[37m(pry):7:in `<main>'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:355:in `eval'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:355:in `evaluate_ruby'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:323:in `handle_line'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:243:in `block (2 levels) in eval'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:242:in `catch'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:242:in `block in eval'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:241:in `catch'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:241:in `eval'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/backend.rb:65:in `eval'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/backend.rb:12:in `eval'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/kernel.rb:87:in `execute_request'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/kernel.rb:47:in `dispatch'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/kernel.rb:37:in `run'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/command.rb:70:in `run_kernel'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/command.rb:34:in `run'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/bin/iruby:5:in `<top (required)>'\u001b[0m", | |
| "\u001b[37m/usr/local/bin/iruby:23:in `load'\u001b[0m", | |
| "\u001b[37m/usr/local/bin/iruby:23:in `<main>'\u001b[0m" | |
| ] | |
| } | |
| ], | |
| "source": [ | |
| "artists.max_index" | |
| ] | |
| }, | |
| { | |
| "cell_type": "code", | |
| "execution_count": 5, | |
| "metadata": { | |
| "collapsed": false | |
| }, | |
| "outputs": [ | |
| { | |
| "ename": "NoMethodError", | |
| "evalue": "undefined method `sort' for nil:NilClass", | |
| "output_type": "error", | |
| "traceback": [ | |
| "\u001b[31mNoMethodError\u001b[0m: undefined method `sort' for nil:NilClass", | |
| "\u001b[37m(pry):8:in `<main>'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:355:in `eval'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:355:in `evaluate_ruby'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:323:in `handle_line'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:243:in `block (2 levels) in eval'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:242:in `catch'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:242:in `block in eval'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:241:in `catch'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/pry-0.10.3/lib/pry/pry_instance.rb:241:in `eval'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/backend.rb:65:in `eval'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/backend.rb:12:in `eval'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/kernel.rb:87:in `execute_request'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/kernel.rb:47:in `dispatch'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/kernel.rb:37:in `run'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/command.rb:70:in `run_kernel'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/command.rb:34:in `run'\u001b[0m", | |
| "\u001b[37m/var/lib/gems/2.2.0/gems/iruby-0.2.8/bin/iruby:5:in `<top (required)>'\u001b[0m", | |
| "\u001b[37m/usr/local/bin/iruby:23:in `load'\u001b[0m", | |
| "\u001b[37m/usr/local/bin/iruby:23:in `<main>'\u001b[0m" | |
| ] | |
| } | |
| ], | |
| "source": [ | |
| "top_ten = artists.sort(ascending: false).head\n", | |
| "\n", | |
| "top_ten.plot type: :bar do |plt|\n", | |
| " plt.yrange [0,300]\n", | |
| " plt.width 1120 \n", | |
| " plt.height 800\n", | |
| " plt.legend true\n", | |
| " plt.rotate_x_label 45\n", | |
| "end" | |
| ] | |
| }, | |
| { | |
| "cell_type": "code", | |
| "execution_count": null, | |
| "metadata": { | |
| "collapsed": true | |
| }, | |
| "outputs": [], | |
| "source": [] | |
| } | |
| ], | |
| "metadata": { | |
| "kernelspec": { | |
| "display_name": "Ruby 2.2.3", | |
| "language": "ruby", | |
| "name": "ruby" | |
| }, | |
| "language_info": { | |
| "file_extension": ".rb", | |
| "mimetype": "application/x-ruby", | |
| "name": "ruby", | |
| "version": "2.2.3" | |
| } | |
| }, | |
| "nbformat": 4, | |
| "nbformat_minor": 0 | |
| } |
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