Python 设置plt.ylim时极坐标图填充不正确
我正在尝试设置我一直在研究的几个极坐标图的ylim。问题是,当我在函数内部更改Python 设置plt.ylim时极坐标图填充不正确,python,matplotlib,Python,Matplotlib,我正在尝试设置我一直在研究的几个极坐标图的ylim。问题是,当我在函数内部更改plt.ylim时,连接极坐标图内部形状的填充和线条会断开连接。我不明白这是为什么。我在下面附上了一个截图 有人对如何解决这个问题有什么建议吗?我在下面插入了我的函数和示例数据框 import matplotlib.pyplot as plt import pandas as pd def make_spider(row, title, color): import math categ
plt.ylim
时,连接极坐标图内部形状的填充和线条会断开连接。我不明白这是为什么。我在下面附上了一个截图
有人对如何解决这个问题有什么建议吗?我在下面插入了我的函数和示例数据框
import matplotlib.pyplot as plt
import pandas as pd
def make_spider(row, title, color):
import math
categories = list(df)
N = len(categories)
angles = [n / float(N) * 2 * math.pi for n in range(N)]
angles += angles[:1]
ax = plt.subplot(1, 5, row+1, polar=True)
plt.xticks(angles[:-1], categories, color='grey', size=8)
values = df.iloc[row].values.flatten().tolist()
values += values[:1]
ax.plot(angles, values, color=color, linewidth=2, linestyle='solid')
ax.fill(angles, values, color=color, alpha = .4)
# here is the problematic line of code
plt.ylim(-.3, .4)
my_dpi = 40
plt.figure(figsize=(1000/my_dpi, 1000/my_dpi), dpi=96)
my_palette = plt.cm.get_cmap('Set2', len(df.index)+1)
for row in range(0, len(df.index)):
make_spider( row = row, title='Cluster: ' + str(row), color=my_palette(row) )
数据帧示例:
df = pd.DataFrame.from_dict({"no_rooms":{"0":-0.3470532925,"1":-0.082144001,"2":-0.082144001,"3":-0.3470532925,"4":-0.3470532925},"total_area":{"0":-0.1858487321,"1":-0.1685491141,"2":-0.1632483955,"3":-0.1769700284,"4":-0.0389887094},"car_park_spaces":{"0":-0.073703681,"1":-0.073703681,"2":-0.073703681,"3":-0.073703681,"4":-0.073703681},"house_price":{"0":-0.2416123064,"1":-0.2841806825,"2":-0.259622004,"3":-0.3529449824,"4":-0.3414842657},"pop_density":{"0":-0.1271390651,"1":-0.3105853643,"2":-0.2316607937,"3":-0.3297832328,"4":-0.4599021194},"business_rate":{"0":-0.1662745006,"1":-0.1426329043,"2":-0.1577528867,"3":-0.163560133,"4":-0.1099718326},"noqual_pc":{"0":-0.0251535462,"1":-0.1540641646,"2":-0.0204666924,"3":-0.0515740013,"4":-0.0445135996},"level4qual_pc":{"0":-0.0826103951,"1":-0.1777759951,"2":-0.114263357,"3":-0.1787044751,"4":-0.2709496389},"badhealth_pc":{"0":-0.105481688,"1":-0.1760349683,"2":-0.128215043,"3":-0.1560577648,"4":-0.1760349683}})
极轴具有
set\u rmax()
功能。将plt.ylim()
行更改为
plt.gca().set_rmax(.4)
解决了此问题。极轴具有
set\u rmax()
功能。将plt.ylim()
行更改为
plt.gca().set_rmax(.4)
解决了这个问题。这里的问题是,当线超出轴限制时,它们会被“吃掉”。当您设置
plt.ylim(-.3.4)
时,最后两个图表中有一些点超出此范围,即-0.3
以下。要显示这些点,您需要设置限制以包括这些点。例如
plt.ylim(-.5, .4)
在下面,我还将径向栅格的间距设置为0.2,以使此绘图看起来不那么拥挤。完整的可运行示例:
import matplotlib.pyplot as plt
import pandas as pd
import numpy as np
def make_spider(df, row, title, color):
categories = list(df)
N = len(categories)
angles = [n / float(N) * 2 * np.pi for n in range(N)]
angles += angles[:1]
ax = plt.subplot(1, 5, row+1, polar=True)
plt.xticks(angles[:-1], categories, color='grey', size=8)
plt.yticks(np.arange(-.4,.5,.2))
plt.ylim(-.5, .4)
values = df.iloc[row].values.flatten().tolist()
values += values[:1]
ax.plot(angles, values, color=color, linewidth=2, linestyle='solid')
ax.fill(angles, values, color=color, alpha = .4)
df = pd.DataFrame.from_dict(
{"no_rooms":{"0":-0.3470532925,"1":-0.082144001,"2":-0.082144001,
"3":-0.3470532925,"4":-0.3470532925},
"total_area":{"0":-0.1858487321,"1":-0.1685491141,"2":-0.1632483955,
"3":-0.1769700284,"4":-0.0389887094},
"car_park_spaces":{"0":-0.073703681,"1":-0.073703681,"2":-0.073703681,
"3":-0.073703681,"4":-0.073703681},
"house_price":{"0":-0.2416123064,"1":-0.2841806825,"2":-0.259622004,
"3":-0.3529449824,"4":-0.3414842657},
"pop_density":{"0":-0.1271390651,"1":-0.3105853643,"2":-0.2316607937,
"3":-0.3297832328,"4":-0.4599021194},
"business_rate":{"0":-0.1662745006,"1":-0.1426329043,"2":-0.1577528867,
"3":-0.163560133,"4":-0.1099718326},
"noqual_pc":{"0":-0.0251535462,"1":-0.1540641646,"2":-0.0204666924,
"3":-0.0515740013,"4":-0.0445135996},
"level4qual_pc":{"0":-0.0826103951,"1":-0.1777759951,"2":-0.114263357,
"3":-0.1787044751,"4":-0.2709496389},
"badhealth_pc":{"0":-0.105481688,"1":-0.1760349683,"2":-0.128215043,
"3":-0.1560577648,"4":-0.1760349683}})
my_dpi = 40
plt.figure(figsize=(1000/my_dpi, 1000/my_dpi), dpi=96)
my_palette = plt.cm.get_cmap('Set2', len(df.index)+1)
for row in range(0, len(df.index)):
make_spider(df, row = row, title='Cluster: ' + str(row), color=my_palette(row) )
plt.show()
这里的问题是,当这些线超出轴的限制时,它们会被“吃掉”。当您设置
plt.ylim(-.3.4)
时,最后两个图表中有一些点超出此范围,即-0.3
以下。要显示这些点,您需要设置限制以包括这些点。例如
plt.ylim(-.5, .4)
在下面,我还将径向栅格的间距设置为0.2,以使此绘图看起来不那么拥挤。完整的可运行示例:
import matplotlib.pyplot as plt
import pandas as pd
import numpy as np
def make_spider(df, row, title, color):
categories = list(df)
N = len(categories)
angles = [n / float(N) * 2 * np.pi for n in range(N)]
angles += angles[:1]
ax = plt.subplot(1, 5, row+1, polar=True)
plt.xticks(angles[:-1], categories, color='grey', size=8)
plt.yticks(np.arange(-.4,.5,.2))
plt.ylim(-.5, .4)
values = df.iloc[row].values.flatten().tolist()
values += values[:1]
ax.plot(angles, values, color=color, linewidth=2, linestyle='solid')
ax.fill(angles, values, color=color, alpha = .4)
df = pd.DataFrame.from_dict(
{"no_rooms":{"0":-0.3470532925,"1":-0.082144001,"2":-0.082144001,
"3":-0.3470532925,"4":-0.3470532925},
"total_area":{"0":-0.1858487321,"1":-0.1685491141,"2":-0.1632483955,
"3":-0.1769700284,"4":-0.0389887094},
"car_park_spaces":{"0":-0.073703681,"1":-0.073703681,"2":-0.073703681,
"3":-0.073703681,"4":-0.073703681},
"house_price":{"0":-0.2416123064,"1":-0.2841806825,"2":-0.259622004,
"3":-0.3529449824,"4":-0.3414842657},
"pop_density":{"0":-0.1271390651,"1":-0.3105853643,"2":-0.2316607937,
"3":-0.3297832328,"4":-0.4599021194},
"business_rate":{"0":-0.1662745006,"1":-0.1426329043,"2":-0.1577528867,
"3":-0.163560133,"4":-0.1099718326},
"noqual_pc":{"0":-0.0251535462,"1":-0.1540641646,"2":-0.0204666924,
"3":-0.0515740013,"4":-0.0445135996},
"level4qual_pc":{"0":-0.0826103951,"1":-0.1777759951,"2":-0.114263357,
"3":-0.1787044751,"4":-0.2709496389},
"badhealth_pc":{"0":-0.105481688,"1":-0.1760349683,"2":-0.128215043,
"3":-0.1560577648,"4":-0.1760349683}})
my_dpi = 40
plt.figure(figsize=(1000/my_dpi, 1000/my_dpi), dpi=96)
my_palette = plt.cm.get_cmap('Set2', len(df.index)+1)
for row in range(0, len(df.index)):
make_spider(df, row = row, title='Cluster: ' + str(row), color=my_palette(row) )
plt.show()
那么,如何让
r
从-.3
开始呢?@ImportanceOfBeingEarnest-.3的半径意味着什么?在这种情况下,不知道。一般来说,这意味着y
的值为-0.3
@ImportanceOfBeingEarnest,这是一个极坐标图。没有负半径。我不明白。关于(1)有一个用例,在其中一个问题中,有人想要绘制天线响应曲线。我认为这很有道理。那么你如何让r
从-.3
开始呢?@ImportanceOfBeingEarnest-.3的半径意味着什么?在这种情况下,我不知道。一般来说,这意味着y
的值为-0.3
@ImportanceOfBeingEarnest,这是一个极坐标图。没有负半径。我不明白。关于(1)有一个用例,在其中一个问题中,有人想要绘制天线响应曲线。我认为这很有道理。