数据可视化的作业
用平行坐标绘图可视化分析数据（大概是这个意思吧）
（说实在我刚看到这个的时候有点不敢相信，因为我甚至不知道这是什么图
百度得到答案：（真的好官方没有太大用处系列）
平行坐标是可视化高维几何和分析多元数据的常用方法。
为了在n维空间中显示一组点，绘制由n条平行线组成的背景，通常是垂直且等距的。所述的点N 维空间被表示为折线与顶点在平行的轴线； 第i 轴上顶点的位置对应于该点的第i个坐标。
此可视化与时间序列可视化密切相关，除了它应用于轴与时间点不对应的数据，因此没有自然顺序。因此，不同的轴布置可能是有意义的。
为了表示在高维空间的一个点集， 在N条平行的线的背景下，（一般这N条线都竖直且等距），一个在高维空间的点被表示为一条拐点在N条平行坐标轴的折线，在第K个坐标轴上的位置就表示这个点在第K个维的值。
平行坐标是信息可视化的一种重要技术。为了克服传统的笛卡尔直角坐标系容易耗尽空间、 难以表达三维以上数据的问题， 平行坐标将高维数据的各个变量用一系列相互平行的坐标轴表示， 变量值对应轴上位置。 为了反映变化趋势和各个变量间相互关系，往往将描述不同变量的各点连接成折线。所以平行坐标图的实质是将 维欧式空间的一个点Xi(xi1,xi2,…,xim) 映射到维平面上的一条曲线。
平行坐标图可以表示超高维数据。 平行坐标的一个显著优点是其具有良好的数学基础， 其射影几何解释和对偶特性使它很适合用于可视化数据分析。
浏览一遍之后我大致知道了画图需要的是多维数据了（可是我去哪里找呢555= =
至于图的话，我只在学长的系统里看见过但是没有了解和研究过，我都不知道要用什么数据去画
于是，我很懵，我去问了同学得到散点图的回答（显然不是
于是先去的官网api寻找（我觉得这里可以夸夸自己
于是找到了一个很像的例子（我有理由确定就是它
于是我点了进去大概是这样↓
这该死的华丽（但是我觉得哪里怪怪的，也许是坐标轴……然后我挑了下参数，就变成了这个样子↓
其实我觉得也没什么变化，放个网址好了：https://observablehq.com/@d3/parallel-coordinates（里面有实例代码
但是看完代码之后我发现，我没有合适的数据阿（这就很尴尬了
于是乎就去百度里找数据（要合适我直接做实验报告的确实也是有点难度
找了很久找到了一个csv数据↓
City,Consumer Price,Rent,Consumer Price+Rent,Groceries,Restaurant Price,Local Purch. Power
"Trondheim, Norway",188.91,59.16,142.21,193.94,160.23,67.01
"Stavanger, Norway",171.32,78.08,137.76,147.74,201.16,78.50
"Zurich, Switzerland",152.84,74.58,124.67,143.70,138.79,142.77
"Oslo, Norway",152.03,57.40,117.97,139.22,155.75,99.31
"Geneva, Switzerland",146.24,79.05,122.06,138.95,135.25,115.54
"Bern, Switzerland",142.44,57.44,111.85,126.78,103.59,149.28
"Lucerne, Switzerland",139.94,72.45,115.65,146.52,95.72,105.65
"Perth, Australia",139.63,43.76,105.13,113.13,131.61,125.08
"Bergen, Norway",138.79,55.98,108.98,135.46,130.23,97.02
"Tokyo, Japan",135.23,95.43,120.91,120.42,91.68,90.14
"Sydney, Australia",132.39,86.25,115.79,121.11,110.98,97.23
"Adelaide, Australia",129.60,47.30,99.98,120.68,121.44,112.19
"Monaco, Monaco",128.15,173.08,144.32,89.80,138.14,62.30
"Copenhagen, Denmark",123.82,48.65,96.77,104.25,139.11,97.43
"Edinburgh, United Kingdom",122.52,38.21,92.18,92.92,143.02,95.08
"Melbourne, Australia",121.53,64.37,100.96,112.50,102.37,87.81
"Dublin, Ireland",119.56,48.30,93.91,109.96,113.19,93.54
"London, United Kingdom",118.52,87.34,107.30,92.59,117.54,88.58
"Arhus, Denmark",115.96,65.90,97.94,94.68,132.05,73.97
"Canberra, Australia",115.89,53.55,93.45,106.77,94.30,115.91
"Brisbane, Australia",114.70,57.19,94.00,113.64,101.33,100.49
"Paris, France",113.88,63.47,95.73,95.93,112.89,82.49
"Malmo, Sweden",112.89,38.45,86.10,92.55,129.79,96.70
"Toulouse, France",112.28,29.90,82.63,89.10,105.33,82.70
"Riyadh, Saudi Arabia",112.03,19.91,78.87,138.45,41.65,70.51
"Amsterdam, Netherlands",110.78,64.61,94.16,69.93,114.88,88.83
"Darwin, Australia",110.41,56.44,90.98,92.67,111.09,121.91
"Auckland, New Zealand",110.36,36.80,83.89,98.74,88.77,97.68
"Gent, Belgium",109.27,36.38,83.04,81.58,109.49,83.02
"Stockholm, Sweden",109.14,37.75,83.45,87.42,117.66,85.65
"Brussels, Belgium",109.10,40.63,84.46,91.44,109.75,85.76
"Aberdeen, United Kingdom",109.08,42.04,84.95,103.80,110.60,119.20
"Boston, MA, United States",106.80,69.66,93.43,113.24,86.06,109.87
"Dusseldorf, Germany",106.51,25.77,77.45,77.03,119.73,157.89
"Wellington, New Zealand",106.02,37.02,81.19,104.20,93.89,90.61
"Turin, Italy",105.68,40.22,82.12,86.86,107.47,46.42
"Rome, Italy",105.60,60.03,89.20,87.02,113.68,57.49
"Vancouver, Canada",105.29,60.49,89.17,103.55,92.54,98.12
"Edmonton, Canada",105.28,38.95,81.40,104.56,86.97,86.09
"Brighton, United Kingdom",104.73,54.42,86.62,80.84,87.34,128.05
"Birmingham, United Kingdom",104.57,42.93,82.39,94.22,90.62,71.95
"Toronto, Canada",104.53,52.42,85.77,96.13,86.13,104.11
"Helsinki, Finland",104.08,56.58,86.98,81.00,101.69,96.15
"Venice, Italy",103.56,31.33,77.56,70.18,89.87,76.23
"Honolulu, HI, United States",103.46,59.01,87.47,103.67,78.28,90.60
"Calgary, Canada",103.38,40.93,80.91,99.95,81.08,124.17
"Sao Paolo, Brazil",102.96,35.60,78.72,62.93,73.58,46.26
"Tampere, Finland",102.68,30.37,76.65,100.74,98.33,93.84
"San Francisco, CA, United States",102.52,90.04,98.03,97.84,83.21,89.35
"Cagliari, Italy",101.88,29.29,75.76,72.93,114.90,66.47
"Hanover, Germany",101.82,28.11,75.29,82.62,79.95,90.76
"Belfast, United Kingdom",101.74,22.58,73.25,88.98,113.28,69.18
"Vienna, Austria",101.47,46.87,81.82,82.49,80.97,99.19
"Seattle, WA, United States",101.04,48.15,82.01,100.90,82.89,107.23
"Strasbourg, France",100.86,32.03,76.09,76.03,126.38,79.49
"Florence, Italy",100.43,41.39,79.18,72.16,94.28,66.66
"Thessaloniki, Greece",100.39,18.96,71.08,69.76,95.91,42.30
"Erlangen, Germany",100.39,33.07,76.16,92.92,80.27,28.69
"Hamburg, Germany",100.18,37.35,77.57,92.62,76.50,90.42
"Haifa, Israel",100.12,26.52,73.63,78.81,94.18,74.63
"Reykjavik, Iceland",100.11,31.82,75.53,95.54,90.64,81.22
"New York, NY, United States",100.00,100.00,100.00,100.00,100.00,100.00
"Leeds, United Kingdom",98.85,34.95,75.85,81.88,107.45,85.65
"Phoenix, AZ, United States",98.57,32.76,74.88,85.05,72.83,97.47
"Washington, DC, United States",98.19,69.37,87.81,89.39,81.26,97.37
"Linkoping, Sweden",98.06,26.92,72.46,90.51,102.37,114.78
"Montreal, Canada",97.86,37.57,76.16,94.88,92.23,109.41
"Bologna, Italy",97.82,38.03,76.31,92.02,89.53,84.84
"Nice, France",96.89,34.95,74.60,81.58,85.89,85.58
"Milan, Italy",96.88,49.22,79.73,74.25,106.38,74.06
"Winnipeg, Canada",96.64,32.72,73.63,96.90,74.52,97.96
"Athens, Greece",96.49,20.82,69.25,71.85,97.63,48.42
"Singapore, Singapore",96.08,90.69,94.14,82.76,65.10,93.29
"Munich, Germany",95.95,46.08,78.00,82.22,87.02,112.58
"Bordeaux, France",95.92,27.63,71.34,78.45,93.93,67.43
"Genoa, Italy",95.06,35.04,73.46,82.91,98.27,115.78
"Manchester, United Kingdom",94.96,36.44,73.90,79.54,90.48,95.97
"Christchurch, New Zealand",94.35,28.00,70.47,88.50,77.65,82.57
"Halifax, Canada",94.30,34.13,72.64,95.04,79.02,119.94
"San Jose, CA, United States",94.11,73.36,86.64,82.33,82.04,113.13
"Columbus, OH, United States",94.03,20.43,67.54,86.75,75.11,112.75
"Stuttgart, Germany",94.01,33.18,72.12,68.14,81.10,119.70
"Marbella, Spain",93.95,30.68,71.18,69.65,99.73,107.63
"Chania, Greece",93.77,18.01,66.50,69.52,88.97,46.87
"Ottawa, Canada",93.76,36.87,73.29,96.84,83.34,116.01
"Brasilia, Brazil",93.08,33.99,71.81,65.89,69.44,32.70
"Hartford, CT, United States",92.90,47.57,76.59,108.41,72.13,109.10
"Indianapolis, IN, United States",92.50,31.99,70.72,72.01,69.91,281.77
"Marseille, France",92.13,31.44,70.28,88.65,82.98,102.35
"Frankfurt, Germany",92.02,34.75,71.41,65.96,80.00,115.22
"Rio De Janeiro, Brazil",91.85,39.61,73.05,59.80,69.92,42.76
"Nicosia, Cyprus",91.80,25.66,68.00,76.36,100.08,65.24
"London, Canada",91.51,34.41,70.96,78.95,80.36,94.75
"Lyon, France",91.14,34.41,70.73,82.18,92.00,83.91
"San Diego, CA, United States",91.05,57.88,79.11,81.09,84.34,109.84
"Los Angeles, CA, United States",90.87,63.97,81.19,73.58,70.46,122.29
"San Juan, Puerto Rico",90.78,31.15,69.32,69.25,73.68,30.49
"Cologne, Germany",90.73,29.58,68.72,74.64,82.78,114.48
"Minneapolis, MN, United States",90.26,34.78,70.29,72.84,77.16,108.19
"Tampa, FL, United States",89.97,32.39,69.25,64.01,62.16,90.85
"Sliema, Malta",89.88,26.35,67.02,70.55,89.05,80.50
"Berlin, Germany",89.09,35.80,69.91,75.36,71.71,133.19
"Waterloo, Canada",89.02,29.71,67.67,87.06,67.85,101.67
"Baltimore, MD, United States",88.99,54.12,76.44,101.95,78.13,118.83
"Sevilla, Spain",88.96,18.79,63.70,64.69,81.85,73.40
"Beirut, Lebanon",88.92,37.05,70.25,44.54,76.19,25.73
"Barcelona, Spain",88.82,33.92,69.06,65.26,88.14,86.59
"Philadelphia, PA, United States",88.36,58.85,77.74,83.39,78.50,98.96
"Hong Kong, Hong Kong",88.13,106.22,94.64,85.25,79.06,91.77
"Madrid, Spain",87.93,39.57,70.52,60.85,88.31,93.96
"Graz, Austria",87.76,35.14,68.82,77.79,72.87,101.91
"Dallas, TX, United States",87.62,38.51,69.95,67.93,72.85,113.86
"Nuremberg, Germany",87.54,30.04,66.84,69.56,78.79,107.62
"Jerusalem, Israel",87.54,35.97,68.98,70.06,77.82,68.10
"Houston, TX, United States",86.97,39.70,69.96,74.96,68.89,137.32
"Bilbao, Spain",86.62,37.70,69.01,60.47,93.40,94.48
"Leicester, United Kingdom",86.15,27.80,65.15,82.09,67.83,103.13
"Campinas, Brazil",85.98,23.70,63.56,54.81,66.22,75.34
"Abu Dhabi, United Arab Emirates",85.84,80.82,84.04,72.59,92.39,134.56
"Chicago, IL, United States",85.41,49.96,72.65,72.28,74.80,119.92
"Saint Louis, MO, United States",84.91,23.22,62.71,84.75,64.89,140.12
"Doha, Qatar",84.73,63.50,77.09,81.63,70.84,153.01
"Florianopolis, Brazil",83.88,27.46,63.58,69.26,48.84,37.89
"Pittsburgh, PA, United States",83.72,22.56,61.71,69.83,56.65,135.19
"Montevideo, Uruguay",83.56,26.22,62.93,66.73,68.83,30.20
"Dubai, United Arab Emirates",83.39,67.87,77.80,66.31,78.57,149.89
"Bremen, Germany",82.85,22.77,61.23,70.65,65.58,88.11
"Porto Alegre, Brazil",82.33,23.75,61.25,50.02,51.01,50.42
"Cincinnati, OH, United States",82.18,29.11,63.08,72.09,61.97,103.60
"Valencia, Spain",81.87,19.60,59.46,57.18,73.68,84.53
"Patras, Greece",81.84,17.58,58.71,63.73,76.59,45.64
"Curitiba, Brazil",81.10,22.60,60.05,57.17,45.90,48.94
"Detroit, MI, United States",79.72,30.54,62.02,75.82,67.24,92.61
"Denver, CO, United States",79.39,48.43,68.25,69.23,64.57,126.10
"Austin, TX, United States",78.92,45.55,66.91,80.38,64.96,131.95
"Portland, OR, United States",77.22,33.80,61.59,67.34,68.36,123.02
"Londrina, Brazil",76.68,23.42,57.51,49.26,54.52,30.91
"Lisbon, Portugal",76.33,29.49,59.47,58.65,62.75,62.83
"Coimbra, Portugal",75.74,15.84,54.18,68.50,48.93,53.72
"Split, Croatia",75.60,15.73,54.05,59.97,59.67,51.15
"Salvador, Brazil",75.53,19.72,55.44,49.95,45.98,33.97
"Casablanca, Morocco",75.49,36.51,61.46,74.49,54.77,15.00
"Des Moines, IA, United States",75.45,29.18,58.80,68.64,54.51,104.04
"Ljubljana, Slovenia",75.42,28.59,58.56,62.73,61.98,56.95
"Maribor, Slovenia",75.17,28.11,58.23,55.86,56.85,52.19
"Istanbul, Turkey",74.89,23.21,56.29,55.95,55.29,57.60
"Astana, Kazakhstan",74.58,36.29,60.80,50.62,38.83,32.01
"Johannesburg, South Africa",74.23,38.34,61.31,59.72,55.42,89.43
"Balneario Camboriu, Brazil",74.02,18.98,54.21,48.29,52.10,25.21
"Las Vegas, NV, United States",73.98,36.00,60.31,66.83,70.80,138.32
"Manama, Bahrain",71.86,47.24,63.00,63.60,80.96,64.67
"Zagreb, Croatia",71.49,21.12,53.36,57.85,60.09,54.58
"Baku, Azerbaijan",71.24,41.03,60.37,53.20,68.17,26.38
"San Jose, Costa Rica",71.17,25.95,54.90,78.60,52.85,38.83
"Riga, Latvia",70.75,15.16,50.74,52.59,66.61,34.70
"Seoul, South Korea",70.53,37.10,58.50,71.05,50.57,121.54
"Fortaleza, Brazil",70.30,20.94,52.54,51.92,47.81,59.92
"Bratislava, Slovakia",69.94,29.17,55.27,55.22,50.61,48.64
"Santiago, Chile",69.89,20.62,52.16,53.54,58.73,44.98
"Bogota, Colombia",69.50,21.86,52.36,64.95,41.91,26.24
"Belo Horizonte, Brazil",69.08,21.66,52.01,46.67,60.15,55.99
"Porto, Portugal",69.05,20.32,51.51,52.65,47.06,52.55
"Santa Cruz De Tenerife, Spain",68.98,22.67,52.31,54.01,56.80,71.41
"Novosibirsk, Russia",67.96,26.92,53.19,46.04,77.27,38.33
"Saint Petersburg, Russia",67.58,31.20,54.49,49.09,73.42,40.98
"Kaunas, Lithuania",67.44,16.93,49.26,52.66,65.17,31.72
"Tallinn, Estonia",66.95,15.82,48.55,52.25,60.70,49.68
"Perm, Russia",66.64,18.04,49.15,59.01,56.54,30.50
"Budva, Montenegro",66.16,19.29,49.29,53.35,57.43,33.57
"Amman, Jordan",65.95,14.51,47.44,60.72,51.73,37.85
"Buenos Aires, Argentina",65.93,21.58,49.97,55.69,57.34,40.33
"Taipei, Taiwan",65.66,23.16,50.36,82.38,33.92,75.97
"Jakarta, Indonesia",64.11,28.25,51.21,69.89,39.67,25.60
"Vilnius, Lithuania",63.84,15.58,46.47,52.08,40.18,34.61
"Budapest, Hungary",63.41,14.03,45.64,46.92,46.75,37.44
"Yerevan, Armenia",63.39,25.89,49.89,37.69,57.59,19.61
"Yekaterinburg, Russia",63.22,21.27,48.12,51.07,72.49,45.59
"Prague, Czech Republic",62.91,27.59,50.20,49.50,43.30,58.44
"Debrecen, Hungary",62.47,12.52,44.49,51.07,48.93,43.11
"Tehran, Iran",62.43,30.99,51.11,56.64,49.01,45.70
"Brno, Czech Republic",62.35,20.49,47.28,48.46,43.52,68.36
"Izmir, Turkey",62.12,14.54,45.00,51.08,42.39,46.25
"Podgorica, Montenegro",61.72,17.49,45.80,44.70,62.72,42.01
"Medellin, Colombia",61.43,15.28,44.82,45.49,42.01,18.61
"Antalya, Turkey",61.00,10.27,42.74,44.91,42.74,39.81
"Kosice, Slovakia",60.86,21.19,46.58,47.90,42.65,54.82
"Ankara, Turkey",60.73,14.95,44.25,43.66,46.31,58.15
"Kiev, Ukraine",59.87,31.70,49.73,41.78,61.94,27.80
"Mexico City, Mexico",59.68,23.22,46.56,53.86,47.77,42.69
"Lima, Peru",59.52,19.90,45.26,51.37,43.29,34.80
"Osijek, Croatia",59.50,13.07,42.79,52.02,39.77,45.81
"Sarajevo, Bosnia And Herzegovina",58.59,13.01,42.19,43.89,44.13,35.81
"Cordoba, Argentina",57.81,19.29,43.94,52.43,51.76,42.17
"Tula, Russia",57.72,15.46,42.51,48.96,44.94,51.89
"Guadalajara, Mexico",57.67,10.28,40.61,47.54,44.78,69.13
"Tbilisi, Georgia",57.32,15.77,42.37,40.89,52.50,28.71
"Monterrey, Mexico",56.60,23.53,44.70,49.88,53.05,65.26
"Belgrade, Serbia",56.21,17.13,42.15,39.73,45.39,30.66
"Sofia, Bulgaria",55.62,16.24,41.44,45.83,37.78,36.55
"Kuala Lumpur, Malaysia",55.55,17.71,41.93,55.09,32.09,77.70
"Damascus, Syria",55.50,14.22,40.65,41.91,41.08,20.52
"Johor Baharu, Malaysia",55.32,7.56,38.13,47.53,33.04,38.85
"Wroclaw, Poland",54.85,19.34,42.07,42.05,42.99,58.27
"Guayaquil, Ecuador",54.76,10.14,38.70,44.89,40.14,25.86
"Beijing, China",54.38,28.71,45.14,61.66,37.49,36.42
"Shanghai, China",54.20,29.86,45.44,51.64,42.60,47.04
"Ulaanbaatar, Mongolia",53.86,24.01,43.12,57.94,37.81,22.57
"Quito, Ecuador",53.69,11.66,38.56,47.42,39.26,23.85
"Warsaw, Poland",53.64,22.81,42.55,42.07,45.74,64.83
"Cairo, Egypt",53.40,17.34,40.42,45.39,48.99,20.64
"Poznan, Poland",53.20,13.93,39.07,42.48,41.12,58.48
"Novi Sad, Serbia",52.70,10.53,37.52,36.62,50.99,35.95
"Iasi, Romania",52.66,13.28,38.48,43.50,34.27,31.37
"Bangkok, Thailand",52.61,26.42,43.18,63.49,29.65,29.50
"Guangzhou, China",52.44,17.25,39.77,70.42,30.76,25.60
"Varna, Bulgaria",52.13,11.51,37.51,45.17,38.79,34.13
"Katowice, Poland",51.87,19.49,40.21,43.11,41.41,57.95
"Gdansk, Poland",51.64,20.34,40.37,40.86,43.63,64.99
"Cluj-napoca, Romania",51.35,10.94,36.81,45.02,36.15,38.79
"Bucharest, Romania",50.97,15.28,38.12,39.77,41.79,36.15
"Banja Luka, Bosnia And Herzegovina",50.12,11.38,36.18,40.89,45.75,43.60
"Brasov, Romania",50.05,9.04,35.29,39.77,35.41,33.48
"Constanta, Romania",49.97,14.32,37.14,36.51,36.55,37.55
"Timisoara, Romania",49.90,10.66,35.78,44.77,32.78,38.57
"Plovdiv, Bulgaria",49.05,10.38,35.13,39.39,32.68,31.18
"Quezon City, Philippines",48.83,13.86,36.24,50.04,28.11,28.25
"Krakow, Poland",48.63,19.48,38.14,38.02,34.91,61.36
"Szczecin, Poland",48.59,12.85,35.73,38.88,41.24,53.60
"Hanoi, Vietnam",47.83,40.93,45.34,50.12,31.48,20.82
"Chisinau, Moldova",47.81,12.35,35.05,38.59,40.27,27.56
"Cebu, Philippines",47.61,8.16,33.41,47.26,21.60,35.28
"Minsk, Belarus",47.40,15.41,35.89,35.32,53.72,22.16
"Manila, Philippines",47.34,13.47,35.15,48.24,23.02,27.02
"Makati, Philippines",47.17,28.45,40.43,40.15,34.74,20.06
"Managua, Nicaragua",46.57,11.08,33.80,45.10,31.34,41.13
"Skopje, Macedonia",46.51,11.74,33.99,35.19,35.78,34.39
"Esfahan, Iran",45.56,19.60,36.22,47.53,34.47,49.90
"Nis, Serbia",44.85,11.02,32.68,31.88,37.15,28.62
"Lublin, Poland",42.40,13.98,32.17,34.50,32.67,60.48
"Gurgaon, India",41.64,12.26,31.07,36.11,26.13,63.86
"Ho Chi Minh City, Vietnam",41.09,29.65,36.97,48.66,24.37,45.15
"Algiers, Algeria",40.60,13.23,30.75,42.50,31.32,23.70
"Lahore, Pakistan",40.09,7.75,28.45,37.26,31.69,23.46
"Delhi, India",37.93,12.08,28.63,35.23,26.57,62.71
"Davao, Philippines",37.59,11.36,28.15,39.78,21.57,44.20
"Mumbai, India",36.62,21.51,31.18,35.97,26.86,57.91
"Bangalore, India",34.92,9.80,25.87,35.32,19.80,65.65
"Indore, India",34.85,5.75,24.38,32.90,16.09,89.92
"Chandigarh, India",33.95,6.98,24.24,31.63,21.68,52.41
"Ahmedabad, India",33.12,6.47,23.53,29.26,24.03,50.67
"Hyderabad, India",32.67,7.26,23.52,32.57,20.06,72.32
"Madurai, India",32.05,5.65,22.55,29.99,13.11,25.02
"Kolkata, India",31.97,8.81,23.63,35.06,21.02,49.26
"Pune, India",31.90,9.34,23.78,32.74,20.62,55.50
"Chennai, India",31.09,9.19,23.21,32.57,17.17,59.10
"Kochi, India",31.07,5.28,21.79,34.43,16.52,44.85
"Thiruvananthapuram, India",30.30,5.09,21.23,35.64,17.20,56.05
"Ludhiana, India",30.20,7.89,22.17,31.27,21.88,55.74
接下来就直接画图就行了
冲冲冲，画出来的结果↓
