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2-2_Selecting_data_and_analysis_part1

發布時間：2024/3/12 编程问答 24 豆豆

生活随笔收集整理的這篇文章主要介紹了 2-2_Selecting_data_and_analysis_part1 小編覺得挺不錯的,現在分享給大家,幫大家做個參考.

import包，加入一些初始設定

# The usual preamble %matplotlib inline import pandas as pd import matplotlib.pyplot as plt import warnings warnings.filterwarnings('ignore') # Make the graphs a bit prettier, and bigger# This is necessary to show lots of columns in pandas 0.12. # Not necessary in pandas 0.13. plt.style.use("bmh") plt.rc('font', family='SimHei', size=13) #顯示中文 pd.set_option('display.max_columns',1000) pd.set_option('display.width', 1000) pd.set_option('display.max_colwidth',1000)

上次的數據集有點小啦，咱們這里用一個大一點的數據集，比如NYC Open Data.

complaints = pd.read_csv('311-service-requests.csv')

其實warning暫時可以不用管，一般是python版本的問題

2.1 瞄一眼數據

dataframe這種格式還是很神奇的，比如說，你要是直接把dataframe丟出去輸出一下，它會告訴你最基本的信息。

比如有多少行多少列，有多少非空的值等等。

complaints Unique KeyCreated DateClosed DateAgencyAgency NameComplaint TypeDescriptorLocation TypeIncident ZipIncident AddressStreet NameCross Street 1Cross Street 2Intersection Street 1Intersection Street 2Address TypeCityLandmarkFacility TypeStatusDue DateResolution Action Updated DateCommunity BoardBoroughX Coordinate (State Plane)Y Coordinate (State Plane)Park Facility NamePark BoroughSchool NameSchool NumberSchool RegionSchool CodeSchool Phone NumberSchool AddressSchool CitySchool StateSchool ZipSchool Not FoundSchool or Citywide ComplaintVehicle TypeTaxi Company BoroughTaxi Pick Up LocationBridge Highway NameBridge Highway DirectionRoad RampBridge Highway SegmentGarage Lot NameFerry DirectionFerry Terminal NameLatitudeLongitudeLocation01234567891011121314151617181920212223242526272829...111039111040111041111042111043111044111045111046111047111048111049111050111051111052111053111054111055111056111057111058111059111060111061111062111063111064111065111066111067111068

26589651

10/31/2013 02:08:41 AM

NaN

NYPD

New York City Police Department

Noise - Street/Sidewalk

Loud Talking

Street/Sidewalk

11432

90-03 169 STREET

169 STREET

90 AVENUE

91 AVENUE

NaN

ADDRESS

JAMAICA

NaN

Precinct

Assigned

10/31/2013 10:08:41 AM

10/31/2013 02:35:17 AM

12 QUEENS

QUEENS

1042027.0

197389.0

Unspecified

QUEENS

Unspecified

NaN

40.708275

-73.791604

(40.70827532593202, -73.79160395779721)

26593698

10/31/2013 02:01:04 AM

NaN

NYPD

New York City Police Department

Illegal Parking

Commercial Overnight Parking

Street/Sidewalk

11378

58 AVENUE

58 PLACE

59 STREET

NaN

BLOCKFACE

MASPETH

NaN

Precinct

Open

10/31/2013 10:01:04 AM

NaN

05 QUEENS

QUEENS

1009349.0

201984.0

Unspecified

QUEENS

Unspecified

NaN

40.721041

-73.909453

(40.721040535628305, -73.90945306791765)

26594139

10/31/2013 02:00:24 AM

10/31/2013 02:40:32 AM

NYPD

New York City Police Department

Noise - Commercial

Loud Music/Party

Club/Bar/Restaurant

10032

4060 BROADWAY

BROADWAY

WEST 171 STREET

WEST 172 STREET

NaN

ADDRESS

NEW YORK

NaN

Precinct

Closed

10/31/2013 10:00:24 AM

10/31/2013 02:39:42 AM

12 MANHATTAN

MANHATTAN

1001088.0

246531.0

Unspecified

MANHATTAN

Unspecified

NaN

40.843330

-73.939144

(40.84332975466513, -73.93914371913482)

26595721

10/31/2013 01:56:23 AM

10/31/2013 02:21:48 AM

NYPD

New York City Police Department

Noise - Vehicle

Car/Truck Horn

Street/Sidewalk

10023

WEST 72 STREET

COLUMBUS AVENUE

AMSTERDAM AVENUE

NaN

BLOCKFACE

NEW YORK

NaN

Precinct

Closed

10/31/2013 09:56:23 AM

10/31/2013 02:21:10 AM

07 MANHATTAN

MANHATTAN

989730.0

222727.0

Unspecified

MANHATTAN

Unspecified

NaN

40.778009

-73.980213

(40.7780087446372, -73.98021349023975)

26590930

10/31/2013 01:53:44 AM

NaN

DOHMH

Department of Health and Mental Hygiene

Rodent

Condition Attracting Rodents

Vacant Lot

10027

WEST 124 STREET

LENOX AVENUE

ADAM CLAYTON POWELL JR BOULEVARD

NaN

BLOCKFACE

NEW YORK

NaN

Pending

11/30/2013 01:53:44 AM

10/31/2013 01:59:54 AM

10 MANHATTAN

MANHATTAN

998815.0

233545.0

Unspecified

MANHATTAN

Unspecified

NaN

40.807691

-73.947387

(40.80769092704951, -73.94738703491433)

26592370

10/31/2013 01:46:52 AM

NaN

NYPD

New York City Police Department

Noise - Commercial

Banging/Pounding

Club/Bar/Restaurant

11372

37 AVENUE

84 STREET

85 STREET

NaN

BLOCKFACE

JACKSON HEIGHTS

NaN

Precinct

Open

10/31/2013 09:46:52 AM

NaN

03 QUEENS

QUEENS

1016948.0

212540.0

Unspecified

QUEENS

Unspecified

NaN

40.749989

-73.881988

(40.7499893014072, -73.88198770727831)

26595682

10/31/2013 01:46:40 AM

NaN

NYPD

New York City Police Department

Blocked Driveway

No Access

Street/Sidewalk

11419

107-50 109 STREET

109 STREET

107 AVENUE

109 AVENUE

NaN

ADDRESS

SOUTH RICHMOND HILL

NaN

Precinct

Assigned

10/31/2013 09:46:40 AM

10/31/2013 01:59:51 AM

10 QUEENS

QUEENS

1030919.0

187622.0

Unspecified

QUEENS

Unspecified

NaN

40.681533

-73.831737

(40.68153278675525, -73.83173699701601)

26595195

10/31/2013 01:44:19 AM

10/31/2013 01:58:49 AM

NYPD

New York City Police Department

Noise - Commercial

Loud Music/Party

Club/Bar/Restaurant

11417

137-09 CROSSBAY BOULEVARD

CROSSBAY BOULEVARD

PITKIN AVENUE

VAN WICKLEN ROAD

NaN

ADDRESS

OZONE PARK

NaN

Precinct

Closed

10/31/2013 09:44:19 AM

10/31/2013 01:58:49 AM

10 QUEENS

QUEENS

1027776.0

184076.0

Unspecified

QUEENS

Unspecified

NaN

40.671816

-73.843092

(40.67181584567338, -73.84309181950769)

26590540

10/31/2013 01:44:14 AM

10/31/2013 02:28:04 AM

NYPD

New York City Police Department

Noise - Commercial

Loud Talking

Club/Bar/Restaurant

10011

258 WEST 15 STREET

WEST 15 STREET

7 AVENUE

8 AVENUE

NaN

ADDRESS

NEW YORK

NaN

Precinct

Closed

10/31/2013 09:44:14 AM

10/31/2013 02:00:56 AM

04 MANHATTAN

MANHATTAN

984031.0

208847.0

Unspecified

MANHATTAN

Unspecified

NaN

40.739913

-74.000790

(40.73991339303542, -74.00079028612932)

26594392

10/31/2013 01:34:41 AM

10/31/2013 02:23:51 AM

NYPD

New York City Police Department

Noise - Commercial

Loud Music/Party

Club/Bar/Restaurant

11225

835 NOSTRAND AVENUE

NOSTRAND AVENUE

UNION STREET

PRESIDENT STREET

NaN

ADDRESS

BROOKLYN

NaN

Precinct

Closed

10/31/2013 09:34:41 AM

10/31/2013 01:48:26 AM

09 BROOKLYN

BROOKLYN

997941.0

182725.0

Unspecified

BROOKLYN

Unspecified

NaN

40.668204

-73.950648

(40.66820406598287, -73.95064760056546)

26595176

10/31/2013 01:25:12 AM

NaN

NYPD

New York City Police Department

Noise - House of Worship

Loud Music/Party

House of Worship

11218

3775 18 AVENUE

18 AVENUE

EAST 9 STREET

EAST 8 STREET

NaN

ADDRESS

BROOKLYN

NaN

Precinct

Open

10/31/2013 09:25:12 AM

NaN

14 BROOKLYN

BROOKLYN

992726.0

170399.0

Unspecified

BROOKLYN

Unspecified

NaN

40.634378

-73.969462

(40.63437840816299, -73.96946177104543)

26591982

10/31/2013 01:24:14 AM

10/31/2013 01:54:39 AM

NYPD

New York City Police Department

Noise - Commercial

Loud Music/Party

Club/Bar/Restaurant

10003

187 2 AVENUE

2 AVENUE

EAST 11 STREET

EAST 12 STREET

NaN

ADDRESS

NEW YORK

NaN

Precinct

Closed

10/31/2013 09:24:14 AM

10/31/2013 01:54:39 AM

03 MANHATTAN

MANHATTAN

988110.0

205533.0

Unspecified

MANHATTAN

Unspecified

NaN

40.730816

-73.986073

(40.73081644089586, -73.98607265739876)

26594169

10/31/2013 01:20:57 AM

10/31/2013 02:12:31 AM

NYPD

New York City Police Department

Illegal Parking

Double Parked Blocking Vehicle

Street/Sidewalk

10029

65 EAST 99 STREET

EAST 99 STREET

MADISON AVENUE

PARK AVENUE

NaN

ADDRESS

NEW YORK

NaN

Precinct

Closed

10/31/2013 09:20:57 AM

10/31/2013 01:42:05 AM

11 MANHATTAN

MANHATTAN

997470.0

226725.0

Unspecified

MANHATTAN

Unspecified

NaN

40.788974

-73.952259

(40.78897400211689, -73.95225898702977)

26594391

10/31/2013 01:20:13 AM

NaN

NYPD

New York City Police Department

Noise - Vehicle

Engine Idling

Street/Sidewalk

10466

NaN

STRANG AVENUE

AMUNDSON AVENUE

INTERSECTION

BRONX

NaN

Precinct

Open

10/31/2013 09:20:13 AM

NaN

12 BRONX

BRONX

1029467.0

264124.0

Unspecified

BRONX

Unspecified

NaN

40.891517

-73.836457

(40.89151738488846, -73.83645714593568)

26590917

10/31/2013 01:19:54 AM

NaN

DOHMH

Department of Health and Mental Hygiene

Rodent

Rat Sighting

1-2 Family Mixed Use Building

11219

63 STREET

13 AVENUE

14 AVENUE

NaN

BLOCKFACE

BROOKLYN

NaN

Pending

11/30/2013 01:19:54 AM

10/31/2013 01:29:26 AM

10 BROOKLYN

BROOKLYN

984467.0

167519.0

Unspecified

BROOKLYN

Unspecified

NaN

40.626477

-73.999218

(40.6264774690411, -73.99921826202639)

26591458

10/31/2013 01:14:02 AM

10/31/2013 01:30:34 AM

NYPD

New York City Police Department

Noise - House of Worship

Loud Music/Party

House of Worship

10025

NaN

WEST 99 STREET

BROADWAY

INTERSECTION

NEW YORK

NaN

Precinct

Closed

10/31/2013 09:14:02 AM

10/31/2013 01:30:34 AM

07 MANHATTAN

MANHATTAN

992454.0

229500.0

Unspecified

MANHATTAN

Unspecified

NaN

40.796597

-73.970370

(40.7965967075252, -73.97036973473399)

26594086

10/31/2013 12:54:03 AM

10/31/2013 02:16:39 AM

NYPD

New York City Police Department

Noise - Street/Sidewalk

Loud Music/Party

Street/Sidewalk

10310

173 CAMPBELL AVENUE

CAMPBELL AVENUE

HENDERSON AVENUE

WINEGAR LANE

NaN

ADDRESS

STATEN ISLAND

NaN

Precinct

Closed

10/31/2013 08:54:03 AM

10/31/2013 02:07:14 AM

01 STATEN ISLAND

STATEN ISLAND

952013.0

171076.0

Unspecified

STATEN ISLAND

Unspecified

NaN

40.636182

-74.116150

(40.63618202176914, -74.1161500428337)

26595117

10/31/2013 12:52:46 AM

NaN

NYPD

New York City Police Department

Illegal Parking

Posted Parking Sign Violation

Street/Sidewalk

11236

NaN

ROCKAWAY PARKWAY

SKIDMORE AVENUE

INTERSECTION

BROOKLYN

NaN

Precinct

Open

10/31/2013 08:52:46 AM

NaN

18 BROOKLYN

BROOKLYN

1015289.0

169710.0

Unspecified

BROOKLYN

Unspecified

NaN

40.632437

-73.888173

(40.63243692394328, -73.88817263437012)

26590389

10/31/2013 12:51:00 AM

NaN

DOT

Department of Transportation

Street Light Condition

Street Light Out

NaN

226 42 ST E

42 ST E

CHURCH AVE

SNYDER AVE

NaN

ADDRESS

NaN

Open

NaN

Unspecified BROOKLYN

BROOKLYN

NaN

Unspecified

BROOKLYN

Unspecified

NaN

26594210

10/31/2013 12:46:27 AM

NaN

NYPD

New York City Police Department

Noise - Commercial

Loud Music/Party

Club/Bar/Restaurant

10033

NaN

WEST 184 STREET

BROADWAY

INTERSECTION

NEW YORK

NaN

Precinct

Assigned

10/31/2013 08:46:27 AM

10/31/2013 01:32:41 AM

12 MANHATTAN

MANHATTAN

1002294.0

249712.0

Unspecified

MANHATTAN

Unspecified

NaN

40.852058

-73.934776

(40.85205827756883, -73.93477640780834)

26592932

10/31/2013 12:43:47 AM

10/31/2013 12:56:20 AM

NYPD

New York City Police Department

Noise - House of Worship

Loud Music/Party

House of Worship

11216

778 PARK PLACE

PARK PLACE

ROGERS AVENUE

NOSTRAND AVENUE

NaN

ADDRESS

BROOKLYN

NaN

Precinct

Closed

10/31/2013 08:43:47 AM

10/31/2013 12:56:20 AM

08 BROOKLYN

BROOKLYN

997608.0

184656.0

Unspecified

BROOKLYN

Unspecified

NaN

40.673505

-73.951844

(40.67350473678714, -73.95184414979961)

26594152

10/31/2013 12:41:17 AM

10/31/2013 01:04:37 AM

NYPD

New York City Police Department

Noise - Commercial

Banging/Pounding

Store/Commercial

10016

155 E 34TH ST

E 34TH ST

NaN

LATLONG

NEW YORK

NaN

Precinct

Closed

10/31/2013 08:41:17 AM

10/31/2013 01:04:38 AM

06 MANHATTAN

MANHATTAN

990133.0

211136.0

Unspecified

MANHATTAN

Unspecified

NaN

40.746194

-73.978769

(40.74619417253121, -73.97876853124392)

26589678

10/31/2013 12:39:55 AM

NaN

NYPD

New York City Police Department

Noise - Vehicle

Car/Truck Music

Street/Sidewalk

11419

NaN

112 STREET

ATLANTIC AVENUE

INTERSECTION

SOUTH RICHMOND HILL

NaN

Precinct

Open

10/31/2013 08:39:55 AM

NaN

09 QUEENS

QUEENS

1030314.0

191578.0

Unspecified

QUEENS

Unspecified

NaN

40.692394

-73.833891

(40.69239424979043, -73.8338912453996)

26592304

10/31/2013 12:38:00 AM

NaN

NYPD

New York City Police Department

Noise - Commercial

Loud Music/Party

Club/Bar/Restaurant

11216

371 TOMPKINS AVENUE

TOMPKINS AVENUE

MADISON STREET

PUTNAM AVENUE

NaN

ADDRESS

BROOKLYN

NaN

Precinct

Assigned

10/31/2013 08:38:00 AM

10/31/2013 01:16:53 AM

03 BROOKLYN

BROOKLYN

999720.0

188825.0

Unspecified

BROOKLYN

Unspecified

NaN

40.684944

-73.944221

(40.6849442562592, -73.94422078036632)

26591892

10/31/2013 12:37:16 AM

NaN

NYPD

New York City Police Department

Blocked Driveway

Partial Access

Street/Sidewalk

10305

1496 BAY STREET

BAY STREET

LYMAN AVENUE

SCHOOL ROAD

NaN

ADDRESS

STATEN ISLAND

NaN

Precinct

Assigned

10/31/2013 08:37:16 AM

10/31/2013 12:52:10 AM

01 STATEN ISLAND

STATEN ISLAND

967283.0

160518.0

Unspecified

STATEN ISLAND

Unspecified

NaN

40.607245

-74.061106

(40.60724493456944, -74.06110566015863)

26591573

10/31/2013 12:35:18 AM

10/31/2013 02:41:35 AM

NYPD

New York City Police Department

Noise - Street/Sidewalk

Loud Talking

Street/Sidewalk

10312

24 PRINCETON LANE

PRINCETON LANE

HAMPTON GREEN

DEAD END

NaN

ADDRESS

STATEN ISLAND

NaN

Precinct

Closed

10/31/2013 08:35:18 AM

10/31/2013 01:45:17 AM

03 STATEN ISLAND

STATEN ISLAND

929577.0

140964.0

Unspecified

STATEN ISLAND

Unspecified

NaN

40.553421

-74.196743

(40.55342078716953, -74.19674315017886)

26590509

10/31/2013 12:33:00 AM

NaN

DOT

Department of Transportation

Street Light Condition

Street Light Out

NaN

38 ST E

CHURCH AVE

LINDEN BLVD

NaN

BLOCKFACE

NaN

Open

NaN

Unspecified BROOKLYN

BROOKLYN

NaN

Unspecified

BROOKLYN

Unspecified

NaN

26591379

10/31/2013 12:32:44 AM

NaN

DOHMH

Department of Health and Mental Hygiene

Harboring Bees/Wasps

Bees/Wasps - Not a beekeper

3+ Family Mixed Use Building

10025

501 WEST 110 STREET

WEST 110 STREET

AMSTERDAM AVENUE

BROADWAY

NaN

ADDRESS

NEW YORK

NaN

Open

11/30/2013 12:32:44 AM

NaN

09 MANHATTAN

MANHATTAN

994143.0

231888.0

Unspecified

MANHATTAN

Unspecified

NaN

40.803149

-73.964266

(40.80314938553783, -73.96426608076082)

26594085

10/31/2013 12:32:08 AM

NaN

NYPD

New York City Police Department

Noise - Street/Sidewalk

Loud Talking

Street/Sidewalk

10026

121 WEST 116 STREET

WEST 116 STREET

LENOX AVENUE

7 AVENUE

NaN

ADDRESS

NEW YORK

NaN

Precinct

Assigned

10/31/2013 08:32:08 AM

10/31/2013 02:00:57 AM

10 MANHATTAN

MANHATTAN

997947.0

231613.0

Unspecified

MANHATTAN

Unspecified

NaN

40.802390

-73.950526

(40.80238950799943, -73.95052644123253)

26589201

10/31/2013 12:32:00 AM

NaN

DOT

Department of Transportation

Street Light Condition

Street Light Out

NaN

10309

295 BAYVIEW AVENUE

BAYVIEW AVENUE

VAIL AVENUE

BAYVIEW LANE

NaN

ADDRESS

STATEN ISLAND

NaN

Open

NaN

03 STATEN ISLAND

STATEN ISLAND

927687.0

127837.0

Unspecified

STATEN ISLAND

Unspecified

NaN

40.517378

-74.203435

(40.517377871705676, -74.20343466779575)

...

26428764

10/04/2013 12:17:03 AM

10/04/2013 12:38:37 AM

NYPD

New York City Police Department

Noise - Commercial

Loud Music/Party

Club/Bar/Restaurant

10022

249 EAST 53 STREET

EAST 53 STREET

3 AVENUE

2 AVENUE

NaN

ADDRESS

NEW YORK

NaN

Precinct

Closed

10/04/2013 08:17:03 AM

10/04/2013 12:38:37 AM

06 MANHATTAN

MANHATTAN

993036.0

215164.0

Unspecified

MANHATTAN

Unspecified

NaN

40.757248

-73.968286

(40.757247604963055, -73.96828647941395)

26426166

10/04/2013 12:16:22 AM

10/04/2013 05:50:49 AM

NYPD

New York City Police Department

Noise - Commercial

Loud Music/Party

Store/Commercial

10029

252 EAST 110 STREET

EAST 110 STREET

3 AVENUE

2 AVENUE

NaN

ADDRESS

NEW YORK

NaN

Precinct

Closed

10/04/2013 08:16:22 AM

10/04/2013 05:50:49 AM

11 MANHATTAN

MANHATTAN

1000407.0

228425.0

Unspecified

MANHATTAN

Unspecified

NaN

40.793635

-73.941649

(40.79363516179995, -73.94164859515777)

26438565

10/04/2013 12:16:00 AM

NaN

DEP

Department of Environmental Protection

Noise

Noise: Construction Before/After Hours (NM1)

NaN

11231

480 VAN BRUNT STREET

VAN BRUNT STREET

REED STREET

DEAD END

NaN

ADDRESS

BROOKLYN

NaN

Open

NaN

06 BROOKLYN

BROOKLYN

979657.0

184924.0

Unspecified

BROOKLYN

Unspecified

NaN

40.674249

-74.016558

(40.6742492231181, -74.01655803856313)

26428990

10/04/2013 12:15:52 AM

10/04/2013 12:44:52 AM

NYPD

New York City Police Department

Noise - Street/Sidewalk

Loud Talking

Street/Sidewalk

10014

733 WASHINGTON STREET

WASHINGTON STREET

BANK STREET

BETHUNE STREET

NaN

ADDRESS

NEW YORK

NaN

Precinct

Closed

10/04/2013 08:15:52 AM

10/04/2013 12:44:52 AM

02 MANHATTAN

MANHATTAN

981950.0

207532.0

Unspecified

MANHATTAN

Unspecified

NaN

40.736304

-74.008299

(40.736303747410034, -74.00829935904578)

26432659

10/04/2013 12:15:46 AM

10/04/2013 04:18:45 AM

NYPD

New York City Police Department

Noise - Commercial

Loud Music/Party

Club/Bar/Restaurant

11218

1213 CORTELYOU ROAD

CORTELYOU ROAD

EAST 12 STREET

EAST 13 STREET

NaN

ADDRESS

BROOKLYN

NaN

Precinct

Closed

10/04/2013 08:15:46 AM

10/04/2013 04:18:45 AM

14 BROOKLYN

BROOKLYN

993451.0

172498.0

Unspecified

BROOKLYN

Unspecified

NaN

40.640139

-73.966847

(40.64013899178716, -73.96684680242933)

26426096

10/04/2013 12:14:09 AM

10/04/2013 01:03:46 AM

NYPD

New York City Police Department

Noise - Street/Sidewalk

Loud Talking

Street/Sidewalk

10032

539 WEST 162 STREET

WEST 162 STREET

ST NICHOLAS AVENUE

BROADWAY

NaN

ADDRESS

NEW YORK

NaN

Precinct

Closed

10/04/2013 08:14:09 AM

10/04/2013 01:03:46 AM

12 MANHATTAN

MANHATTAN

1000571.0

244054.0

Unspecified

MANHATTAN

Unspecified

NaN

40.836532

-73.941018

(40.836532082987944, -73.9410182995914)

26437764

10/04/2013 12:14:00 AM

DEP

Department of Environmental Protection

Water System

Dirty Water (WE)

NaN

10022

251 EAST 51 STREET

EAST 51 STREET

3 AVENUE

2 AVENUE

NaN

ADDRESS

NEW YORK

NaN

Closed

NaN

10/04/2013 12:14:00 AM

06 MANHATTAN

MANHATTAN

992791.0

214702.0

Unspecified

MANHATTAN

Unspecified

NaN

40.755980

-73.969171

(40.75597977288785, -73.96917140638074)

26436286

10/04/2013 12:14:00 AM

NaN

DEP

Department of Environmental Protection

Noise

Noise: Construction Before/After Hours (NM1)

NaN

11231

480 VAN BRUNT STREET

VAN BRUNT STREET

REED STREET

DEAD END

NaN

ADDRESS

BROOKLYN

NaN

Open

NaN

06 BROOKLYN

BROOKLYN

979657.0

184924.0

Unspecified

BROOKLYN

Unspecified

NaN

40.674249

-74.016558

(40.6742492231181, -74.01655803856313)

26428989

10/04/2013 12:13:08 AM

10/04/2013 02:12:47 AM

NYPD

New York City Police Department

Illegal Parking

Posted Parking Sign Violation

Street/Sidewalk

11434

NaN

GUY R BREWER BOULEVARD

ROCKAWAY BOULEVARD

INTERSECTION

JAMAICA

NaN

Precinct

Closed

10/04/2013 08:13:08 AM

10/04/2013 02:12:47 AM

13 QUEENS

QUEENS

1048801.0

178419.0

Unspecified

QUEENS

Unspecified

NaN

40.656160

-73.767353

(40.656160351546845, -73.76735262738222)

26430030

10/04/2013 12:12:07 AM

10/04/2013 02:45:24 AM

NYPD

New York City Police Department

Noise - Street/Sidewalk

Loud Talking

Street/Sidewalk

10027

215 WEST 131ST STREET

WEST 131ST STREET

NaN

LATLONG

NEW YORK

NaN

Precinct

Closed

10/04/2013 08:12:07 AM

10/04/2013 02:45:24 AM

01 MANHATTAN

MANHATTAN

999107.0

235603.0

Unspecified

MANHATTAN

Unspecified

NaN

40.813339

-73.946328

(40.81333907832113, -73.94632769228208)

26429663

10/04/2013 12:12:07 AM

10/04/2013 01:03:44 AM

NYPD

New York City Police Department

Noise - Commercial

Loud Music/Party

Club/Bar/Restaurant

11209

8915 5 AVENUE

5 AVENUE

89 STREET

90 STREET

NaN

ADDRESS

BROOKLYN

NaN

Precinct

Closed

10/04/2013 08:12:07 AM

10/04/2013 01:03:44 AM

10 BROOKLYN

BROOKLYN

976525.0

165015.0

Unspecified

BROOKLYN

Unspecified

NaN

40.619601

-74.027826

(40.619601147364584, -74.02782628492785)

26437763

10/04/2013 12:11:00 AM

NaN

DEP

Department of Environmental Protection

Noise

Noise: Construction Before/After Hours (NM1)

NaN

10028

NaN

EAST 84 STREET

YORK AVENUE

INTERSECTION

NEW YORK

NaN

Open

NaN

08 MANHATTAN

MANHATTAN

998629.0

221493.0

Unspecified

MANHATTAN

Unspecified

NaN

40.774612

-73.948085

(40.77461174278734, -73.94808472177321)

26432955

10/04/2013 12:08:15 AM

10/04/2013 12:48:02 AM

NYPD

New York City Police Department

Noise - Commercial

Loud Music/Party

Club/Bar/Restaurant

10009

506 EAST 13 STREET

EAST 13 STREET

AVENUE A

AVENUE B

NaN

ADDRESS

NEW YORK

NaN

Precinct

Closed

10/04/2013 08:08:15 AM

10/04/2013 12:48:03 AM

03 MANHATTAN

MANHATTAN

989678.0

205065.0

Unspecified

MANHATTAN

Unspecified

NaN

40.729531

-73.980416

(40.72953107218499, -73.98041550317102)

26437035

10/04/2013 12:08:00 AM

10/04/2013 12:13:00 AM

DEP

Department of Environmental Protection

Water System

Dirty Water (WE)

NaN

10022

325 EAST 54 STREET

EAST 54 STREET

2 AVENUE

1 AVENUE

NaN

ADDRESS

NEW YORK

NaN

Closed

NaN

10/04/2013 12:13:00 AM

06 MANHATTAN

MANHATTAN

993688.0

215099.0

Unspecified

MANHATTAN

Unspecified

NaN

40.757069

-73.965933

(40.75706852462872, -73.96593314322774)

26433197

10/04/2013 12:08:00 AM

10/04/2013 12:00:00 PM

DSNY

BCC - Queens East

Derelict Vehicles

14 Derelict Vehicles

Street

11413

220-11 145 AVENUE

145 AVENUE

221 STREET

NaN

ADDRESS

Springfield Gardens

NaN

DSNY Garage

Pending

NaN

10/04/2013 12:08:00 AM

13 QUEENS

QUEENS

1051511.0

181411.0

Unspecified

QUEENS

Unspecified

NaN

40.664353

-73.757556

(40.6643525308449, -73.75755575708348)

26426060

10/04/2013 12:06:39 AM

10/04/2013 12:31:16 AM

NYPD

New York City Police Department

Noise - Street/Sidewalk

Loud Talking

Street/Sidewalk

11224

4823 BEACH 48 STREET

BEACH 48 STREET

BODY OF WATER

SURF AVENUE

NaN

ADDRESS

BROOKLYN

NaN

Precinct

Closed

10/04/2013 08:06:39 AM

10/04/2013 12:31:16 AM

13 BROOKLYN

BROOKLYN

980859.0

149681.0

Unspecified

BROOKLYN

Unspecified

NaN

40.577515

-74.012207

(40.57751513866536, -74.01220705163807)

26430628

10/04/2013 12:06:28 AM

10/04/2013 12:21:39 AM

NYPD

New York City Police Department

Noise - Commercial

Loud Talking

Club/Bar/Restaurant

11209

7915 3 AVENUE

3 AVENUE

79 STREET

80 STREET

NaN

ADDRESS

BROOKLYN

NaN

Precinct

Closed

10/04/2013 08:06:28 AM

10/04/2013 12:21:39 AM

10 BROOKLYN

BROOKLYN

976189.0

168214.0

Unspecified

BROOKLYN

Unspecified

NaN

40.628381

-74.029040

(40.62838143294541, -74.02904041333245)

26431648

10/04/2013 12:06:26 AM

10/23/2013 08:14:52 AM

DOT

Department of Transportation

Street Sign - Missing

Bus Stop

Street

11378

NaN

54 AVENUE

43 STREET

INTERSECTION

MASPETH

NaN

Closed

10/14/2013 09:38:47 AM

10/23/2013 08:14:52 AM

02 QUEENS

QUEENS

1005171.0

206064.0

Unspecified

QUEENS

Unspecified

NaN

40.732250

-73.924513

(40.73225000573841, -73.92451289173367)

26437034

10/04/2013 12:06:00 AM

NaN

DEP

Department of Environmental Protection

Noise

Noise: Jack Hammering (NC2)

NaN

10036

NaN

WEST 48 STREET

BROADWAY

INTERSECTION

NEW YORK

NaN

Open

NaN

05 MANHATTAN

MANHATTAN

988451.0

216208.0

Unspecified

MANHATTAN

Unspecified

NaN

40.760116

-73.984836

(40.76011648520396, -73.98483562074706)

26426094

10/04/2013 12:05:12 AM

10/04/2013 01:08:29 AM

NYPD

New York City Police Department

Noise - Commercial

Loud Music/Party

Club/Bar/Restaurant

11237

211 KNICKERBOCKER AVENUE

KNICKERBOCKER AVENUE

JEFFERSON STREET

TROUTMAN STREET

NaN

ADDRESS

BROOKLYN

NaN

Precinct

Closed

10/04/2013 08:05:12 AM

10/04/2013 01:08:29 AM

04 BROOKLYN

BROOKLYN

1004672.0

195540.0

Unspecified

BROOKLYN

Unspecified

NaN

40.703365

-73.926345

(40.703365329011284, -73.92634531031759)

26429040

10/04/2013 12:04:52 AM

10/04/2013 03:01:04 AM

NYPD

New York City Police Department

Noise - Street/Sidewalk

Loud Talking

Street/Sidewalk

10003

99 2 AVENUE

2 AVENUE

EAST 5 STREET

EAST 6 STREET

NaN

ADDRESS

NEW YORK

NaN

Precinct

Closed

10/04/2013 08:04:52 AM

10/04/2013 03:01:04 AM

03 MANHATTAN

MANHATTAN

987393.0

204234.0

Unspecified

MANHATTAN

Unspecified

NaN

40.727251

-73.988660

(40.727251287038676, -73.98866028603422)

26434084

10/04/2013 12:04:00 AM

NaN

DEP

Department of Environmental Protection

Noise

Noise: Construction Before/After Hours (NM1)

NaN

10036

NaN

8 AVENUE

WEST 47 STREET

INTERSECTION

NEW YORK

NaN

Open

NaN

04 MANHATTAN

MANHATTAN

987720.0

216313.0

Unspecified

MANHATTAN

Unspecified

NaN

40.760405

-73.987474

(40.76040500039782, -73.98747426235285)

26426164

10/04/2013 12:03:00 AM

10/04/2013 02:14:57 AM

NYPD

New York City Police Department

Noise - Commercial

Loud Music/Party

Club/Bar/Restaurant

11106

30-09 BROADWAY

BROADWAY

30 STREET

31 STREET

NaN

ADDRESS

ASTORIA

NaN

Precinct

Closed

10/04/2013 08:03:00 AM

10/04/2013 02:14:57 AM

01 QUEENS

QUEENS

1004746.0

217004.0

Unspecified

QUEENS

Unspecified

NaN

40.762279

-73.926013

(40.762278541098084, -73.92601303458156)

26439710

10/04/2013 12:03:00 AM

DEP

Department of Environmental Protection

Water System

Dirty Water (WE)

NaN

10022

325 EAST 54 STREET

EAST 54 STREET

2 AVENUE

1 AVENUE

NaN

ADDRESS

NEW YORK

NaN

Closed

NaN

10/04/2013 12:03:00 AM

06 MANHATTAN

MANHATTAN

993688.0

215099.0

Unspecified

MANHATTAN

Unspecified

NaN

40.757069

-73.965933

(40.75706852462872, -73.96593314322774)

26435569

10/04/2013 12:02:00 AM

10/04/2013 01:10:00 AM

DEP

Department of Environmental Protection

Water System

Dirty Water (WE)

NaN

10022

311 EAST 50 STREET

EAST 50 STREET

2 AVENUE

1 AVENUE

NaN

ADDRESS

NEW YORK

NaN

Closed

NaN

10/04/2013 01:10:00 AM

06 MANHATTAN

MANHATTAN

993118.0

214222.0

Unspecified

MANHATTAN

Unspecified

NaN

40.754662

-73.967992

(40.75466197318078, -73.96799173864807)

26426013

10/04/2013 12:01:13 AM

10/07/2013 04:07:16 PM

DPR

Department of Parks and Recreation

Maintenance or Facility

Structure - Outdoors

Park

11213

NaN

BROOKLYN

NaN

Closed

10/18/2013 12:01:13 AM

10/07/2013 04:07:16 PM

08 BROOKLYN

BROOKLYN

NaN

Brower Park

BROOKLYN

Brower Park

B012

NaN

7189658900

Brooklyn, St. Marks, Kingston Avenues, Park Place

BROOKLYN

11213

NaN

26428083

10/04/2013 12:01:05 AM

10/04/2013 02:13:50 AM

NYPD

New York City Police Department

Illegal Parking

Posted Parking Sign Violation

Street/Sidewalk

11434

NaN

GUY R BREWER BOULEVARD

ROCKAWAY BOULEVARD

INTERSECTION

JAMAICA

NaN

Precinct

Closed

10/04/2013 08:01:05 AM

10/04/2013 02:13:50 AM

13 QUEENS

QUEENS

1048801.0

178419.0

Unspecified

QUEENS

Unspecified

NaN

40.656160

-73.767353

(40.656160351546845, -73.76735262738222)

26428987

10/04/2013 12:00:45 AM

10/04/2013 01:25:01 AM

NYPD

New York City Police Department

Noise - Street/Sidewalk

Loud Talking

Street/Sidewalk

10016

344 EAST 28 STREET

EAST 28 STREET

MOUNT CARMEL PLACE

1 AVENUE

NaN

ADDRESS

NEW YORK

NaN

Precinct

Closed

10/04/2013 08:00:45 AM

10/04/2013 01:25:01 AM

06 MANHATTAN

MANHATTAN

990637.0

208987.0

Unspecified

MANHATTAN

Unspecified

NaN

40.740295

-73.976952

(40.740295354643706, -73.97695165980414)

26426115

10/04/2013 12:00:28 AM

10/04/2013 04:17:32 AM

NYPD

New York City Police Department

Noise - Commercial

Loud Talking

Club/Bar/Restaurant

11226

1233 FLATBUSH AVENUE

FLATBUSH AVENUE

AVENUE D

NEWKIRK AVENUE

NaN

ADDRESS

BROOKLYN

NaN

Precinct

Closed

10/04/2013 08:00:28 AM

10/04/2013 04:17:32 AM

14 BROOKLYN

BROOKLYN

996654.0

172515.0

Unspecified

BROOKLYN

Unspecified

NaN

40.640182

-73.955306

(40.64018174662485, -73.95530566958138)

26428033

10/04/2013 12:00:10 AM

10/04/2013 01:20:52 AM

NYPD

New York City Police Department

Blocked Driveway

Partial Access

Street/Sidewalk

11236

1259 EAST 94 STREET

EAST 94 STREET

AVENUE J

AVENUE K

NaN

ADDRESS

BROOKLYN

NaN

Precinct

Closed

10/04/2013 08:00:10 AM

10/04/2013 01:20:52 AM

18 BROOKLYN

BROOKLYN

1011804.0

172470.0

Unspecified

BROOKLYN

Unspecified

NaN

40.640024

-73.900717

(40.640024057399216, -73.90071711703163)

111069 rows × 52 columns

2.2 選行或者列

上一節提到了，直接用名字就可以取。

complaints.columns Index(['Unique Key', 'Created Date', 'Closed Date', 'Agency', 'Agency Name', 'Complaint Type', 'Descriptor', 'Location Type', 'Incident Zip', 'Incident Address', 'Street Name', 'Cross Street 1', 'Cross Street 2', 'Intersection Street 1', 'Intersection Street 2', 'Address Type', 'City', 'Landmark', 'Facility Type', 'Status', 'Due Date', 'Resolution Action Updated Date', 'Community Board', 'Borough', 'X Coordinate (State Plane)', 'Y Coordinate (State Plane)', 'Park Facility Name', 'Park Borough', 'School Name', 'School Number', 'School Region', 'School Code', 'School Phone Number', 'School Address', 'School City', 'School State', 'School Zip', 'School Not Found', 'School or Citywide Complaint', 'Vehicle Type', 'Taxi Company Borough', 'Taxi Pick Up Location', 'Bridge Highway Name', 'Bridge Highway Direction', 'Road Ramp', 'Bridge Highway Segment', 'Garage Lot Name', 'Ferry Direction', 'Ferry Terminal Name', 'Latitude', 'Longitude', 'Location'], dtype='object') complaints['Complaint Type'] 0 Noise - Street/Sidewalk 1 Illegal Parking 2 Noise - Commercial 3 Noise - Vehicle 4 Rodent 5 Noise - Commercial 6 Blocked Driveway 7 Noise - Commercial 8 Noise - Commercial 9 Noise - Commercial 10 Noise - House of Worship 11 Noise - Commercial 12 Illegal Parking 13 Noise - Vehicle 14 Rodent 15 Noise - House of Worship 16 Noise - Street/Sidewalk 17 Illegal Parking 18 Street Light Condition 19 Noise - Commercial 20 Noise - House of Worship 21 Noise - Commercial 22 Noise - Vehicle 23 Noise - Commercial 24 Blocked Driveway 25 Noise - Street/Sidewalk 26 Street Light Condition 27 Harboring Bees/Wasps 28 Noise - Street/Sidewalk 29 Street Light Condition... 111039 Noise - Commercial 111040 Noise - Commercial 111041 Noise 111042 Noise - Street/Sidewalk 111043 Noise - Commercial 111044 Noise - Street/Sidewalk 111045 Water System 111046 Noise 111047 Illegal Parking 111048 Noise - Street/Sidewalk 111049 Noise - Commercial 111050 Noise 111051 Noise - Commercial 111052 Water System 111053 Derelict Vehicles 111054 Noise - Street/Sidewalk 111055 Noise - Commercial 111056 Street Sign - Missing 111057 Noise 111058 Noise - Commercial 111059 Noise - Street/Sidewalk 111060 Noise 111061 Noise - Commercial 111062 Water System 111063 Water System 111064 Maintenance or Facility 111065 Illegal Parking 111066 Noise - Street/Sidewalk 111067 Noise - Commercial 111068 Blocked Driveway Name: Complaint Type, Length: 111069, dtype: object

相信大家對python中list的切片操作非常熟悉，這里也一樣，比如你要取前5條數據，直接用df[:5]即可。

拿前幾條數據出來的原因是，我們可以先熟悉熟悉數據，為后期做分析熱熱身。

complaints[:5] Unique KeyCreated DateClosed DateAgencyAgency NameComplaint TypeDescriptorLocation TypeIncident ZipIncident AddressStreet NameCross Street 1Cross Street 2Intersection Street 1Intersection Street 2Address TypeCityLandmarkFacility TypeStatusDue DateResolution Action Updated DateCommunity BoardBoroughX Coordinate (State Plane)Y Coordinate (State Plane)Park Facility NamePark BoroughSchool NameSchool NumberSchool RegionSchool CodeSchool Phone NumberSchool AddressSchool CitySchool StateSchool ZipSchool Not FoundSchool or Citywide ComplaintVehicle TypeTaxi Company BoroughTaxi Pick Up LocationBridge Highway NameBridge Highway DirectionRoad RampBridge Highway SegmentGarage Lot NameFerry DirectionFerry Terminal NameLatitudeLongitudeLocation01234

26589651

10/31/2013 02:08:41 AM

NaN

NYPD

New York City Police Department

Noise - Street/Sidewalk

Loud Talking

Street/Sidewalk

11432

90-03 169 STREET

169 STREET

90 AVENUE

91 AVENUE

NaN

ADDRESS

JAMAICA

NaN

Precinct

Assigned

10/31/2013 10:08:41 AM

10/31/2013 02:35:17 AM

12 QUEENS

QUEENS

1042027.0

197389.0

Unspecified

QUEENS

Unspecified

NaN

40.708275

-73.791604

(40.70827532593202, -73.79160395779721)

26593698

10/31/2013 02:01:04 AM

NaN

NYPD

New York City Police Department

Illegal Parking

Commercial Overnight Parking

Street/Sidewalk

11378

58 AVENUE

58 PLACE

59 STREET

NaN

BLOCKFACE

MASPETH

NaN

Precinct

Open

10/31/2013 10:01:04 AM

NaN

05 QUEENS

QUEENS

1009349.0

201984.0

Unspecified

QUEENS

Unspecified

NaN

40.721041

-73.909453

(40.721040535628305, -73.90945306791765)

26594139

10/31/2013 02:00:24 AM

10/31/2013 02:40:32 AM

NYPD

New York City Police Department

Noise - Commercial

Loud Music/Party

Club/Bar/Restaurant

10032

4060 BROADWAY

BROADWAY

WEST 171 STREET

WEST 172 STREET

NaN

ADDRESS

NEW YORK

NaN

Precinct

Closed

10/31/2013 10:00:24 AM

10/31/2013 02:39:42 AM

12 MANHATTAN

MANHATTAN

1001088.0

246531.0

Unspecified

MANHATTAN

Unspecified

NaN

40.843330

-73.939144

(40.84332975466513, -73.93914371913482)

26595721

10/31/2013 01:56:23 AM

10/31/2013 02:21:48 AM

NYPD

New York City Police Department

Noise - Vehicle

Car/Truck Horn

Street/Sidewalk

10023

WEST 72 STREET

COLUMBUS AVENUE

AMSTERDAM AVENUE

NaN

BLOCKFACE

NEW YORK

NaN

Precinct

Closed

10/31/2013 09:56:23 AM

10/31/2013 02:21:10 AM

07 MANHATTAN

MANHATTAN

989730.0

222727.0

Unspecified

MANHATTAN

Unspecified

NaN

40.778009

-73.980213

(40.7780087446372, -73.98021349023975)

26590930

10/31/2013 01:53:44 AM

NaN

DOHMH

Department of Health and Mental Hygiene

Rodent

Condition Attracting Rodents

Vacant Lot

10027

WEST 124 STREET

LENOX AVENUE

ADAM CLAYTON POWELL JR BOULEVARD

NaN

BLOCKFACE

NEW YORK

NaN

Pending

11/30/2013 01:53:44 AM

10/31/2013 01:59:54 AM

10 MANHATTAN

MANHATTAN

998815.0

233545.0

Unspecified

MANHATTAN

Unspecified

NaN

40.807691

-73.947387

(40.80769092704951, -73.94738703491433)

合并一下，取出某一列的前5行:

complaints['Complaint Type'][:5] 0 Noise - Street/Sidewalk 1 Illegal Parking 2 Noise - Commercial 3 Noise - Vehicle 4 Rodent Name: Complaint Type, dtype: object

另外你先取列再切片和先切片再取列，其實是一樣一樣的。

complaints[:5]['Complaint Type'] 0 Noise - Street/Sidewalk 1 Illegal Parking 2 Noise - Commercial 3 Noise - Vehicle 4 Rodent Name: Complaint Type, dtype: object

2.3 選多行

選一行是把這一行的名字告訴它，那選多行呢？恩，傳一個名稱list給他咯。

complaints[['Complaint Type', 'Borough']] Complaint TypeBorough01234567891011121314151617181920212223242526272829...111039111040111041111042111043111044111045111046111047111048111049111050111051111052111053111054111055111056111057111058111059111060111061111062111063111064111065111066111067111068

Noise - Street/Sidewalk	QUEENS
Illegal Parking	QUEENS
Noise - Commercial	MANHATTAN
Noise - Vehicle	MANHATTAN
Rodent	MANHATTAN
Noise - Commercial	QUEENS
Blocked Driveway	QUEENS
Noise - Commercial	QUEENS
Noise - Commercial	MANHATTAN
Noise - Commercial	BROOKLYN
Noise - House of Worship	BROOKLYN
Noise - Commercial	MANHATTAN
Illegal Parking	MANHATTAN
Noise - Vehicle	BRONX
Rodent	BROOKLYN
Noise - House of Worship	MANHATTAN
Noise - Street/Sidewalk	STATEN ISLAND
Illegal Parking	BROOKLYN
Street Light Condition	BROOKLYN
Noise - Commercial	MANHATTAN
Noise - House of Worship	BROOKLYN
Noise - Commercial	MANHATTAN
Noise - Vehicle	QUEENS
Noise - Commercial	BROOKLYN
Blocked Driveway	STATEN ISLAND
Noise - Street/Sidewalk	STATEN ISLAND
Street Light Condition	BROOKLYN
Harboring Bees/Wasps	MANHATTAN
Noise - Street/Sidewalk	MANHATTAN
Street Light Condition	STATEN ISLAND
...	...
Noise - Commercial	MANHATTAN
Noise - Commercial	MANHATTAN
Noise	BROOKLYN
Noise - Street/Sidewalk	MANHATTAN
Noise - Commercial	BROOKLYN
Noise - Street/Sidewalk	MANHATTAN
Water System	MANHATTAN
Noise	BROOKLYN
Illegal Parking	QUEENS
Noise - Street/Sidewalk	MANHATTAN
Noise - Commercial	BROOKLYN
Noise	MANHATTAN
Noise - Commercial	MANHATTAN
Water System	MANHATTAN
Derelict Vehicles	QUEENS
Noise - Street/Sidewalk	BROOKLYN
Noise - Commercial	BROOKLYN
Street Sign - Missing	QUEENS
Noise	MANHATTAN
Noise - Commercial	BROOKLYN
Noise - Street/Sidewalk	MANHATTAN
Noise	MANHATTAN
Noise - Commercial	QUEENS
Water System	MANHATTAN
Water System	MANHATTAN
Maintenance or Facility	BROOKLYN
Illegal Parking	QUEENS
Noise - Street/Sidewalk	MANHATTAN
Noise - Commercial	BROOKLYN
Blocked Driveway	BROOKLYN

111069 rows × 2 columns

好吧，再拼一下：多列的前n行。

complaints[['Complaint Type', 'Borough']][:10] Complaint TypeBorough0123456789

Noise - Street/Sidewalk	QUEENS
Illegal Parking	QUEENS
Noise - Commercial	MANHATTAN
Noise - Vehicle	MANHATTAN
Rodent	MANHATTAN
Noise - Commercial	QUEENS
Blocked Driveway	QUEENS
Noise - Commercial	QUEENS
Noise - Commercial	MANHATTAN
Noise - Commercial	BROOKLYN

2.4 想統計找出Top類型的數據？

dataframe真的很智能，比如你告訴它，我要統計一下數量了！（用.value_counts()函數），那它就幫你統計數量了：

complaints['Complaint Type'].value_counts() HEATING 14200 GENERAL CONSTRUCTION 7471 Street Light Condition 7117 DOF Literature Request 5797 PLUMBING 5373 PAINT - PLASTER 5149 Blocked Driveway 4590 NONCONST 3998 Street Condition 3473 Illegal Parking 3343 Noise 3321 Traffic Signal Condition 3145 Dirty Conditions 2653 Water System 2636 Noise - Commercial 2578 ELECTRIC 2350 Broken Muni Meter 2070 Noise - Street/Sidewalk 1928 Sanitation Condition 1824 Rodent 1632 Sewer 1627 Taxi Complaint 1227 Consumer Complaint 1227 Damaged Tree 1180 Overgrown Tree/Branches 1083 Graffiti 973 Missed Collection (All Materials) 973 Building/Use 942 Root/Sewer/Sidewalk Condition 836 Derelict Vehicle 803... Fire Alarm - Modification 5 Internal Code 5 Poison Ivy 5 Posting Advertisement 5 Miscellaneous Categories 5 Special Natural Area District (SNAD) 4 Ferry Complaint 4 Illegal Animal Sold 4 Transportation Provider Complaint 4 Fire Alarm - Replacement 3 Illegal Fireworks 3 Adopt-A-Basket 3 Invitation 3 DFTA Literature Request 2 Public Assembly 2 Window Guard 2 Opinion for the Mayor 2 Legal Services Provider Complaint 2 Misc. Comments 2 X-Ray Machine/Equipment 1 Snow 1 DHS Income Savings Requirement 1 DWD 1 Trans Fat 1 Highway Sign - Damaged 1 Ferry Permit 1 Stalled Sites 1 Municipal Parking Facility 1 Open Flame Permit 1 Tunnel Condition 1 Name: Complaint Type, Length: 165, dtype: int64

注意哈，咱們拿到的結果是排過序的，也就是說如果我只要top 10的話，其實截斷一下就可以了：

complaint_counts = complaints['Complaint Type'].value_counts() complaint_counts[:10] HEATING 14200 GENERAL CONSTRUCTION 7471 Street Light Condition 7117 DOF Literature Request 5797 PLUMBING 5373 PAINT - PLASTER 5149 Blocked Driveway 4590 NONCONST 3998 Street Condition 3473 Illegal Parking 3343 Name: Complaint Type, dtype: int64

哈哈，聰明的你一定想到上一節說的繪圖，是的，咱們可以把top10畫出來。

complaint_counts[:10].plot(figsize=(20,6))#默認是折線圖 <matplotlib.axes._subplots.AxesSubplot at 0xf1cd160>

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