作者 | 小F
来源 | 法纳斯特
头图 | CSDN下载自视觉中国
关于动态条形图，小F以前推荐过「Bar Chart Race」这个库。三行代码就能实现动态条形图的绘制。
有些同学在使用的时候，会出现一些错误。一个是加载文件报错，另一个是生成GIF的时候报错。
这是因为作者的示例是网络加载数据，会读取不到。通过读取本地文件，就不会出错。
GIF生成失败一般是需要安装imagemagick(图片处理工具)。
最近小F又发现一个可视化图库「Pandas_Alive」，不仅包含动态条形图，还可以绘制动态曲线图、气泡图、饼状图、地图等。
同样也是几行代码就能完成动态图表的绘制。
安装版本建议是0.2.3，matplotlib版本是3.2.1。
同时需自行安装tqdm(显示进度条)和descartes(绘制地图相关库)。
要不然会出现报错，估计是作者的requestment.txt没包含这两个库。
好了，成功安装后就可以引入这个第三方库，直接选择加载本地文件。
import pandas_aliveimport pandas as pdcovid_df = pd.read_csv('data/covid19.csv', index_col=0, parse_dates=[0])covid_df.plot_animated(filename='examples/example-barh-chart.gif', n_visible=15)
生成了一个GIF图，具体如下。
刚开始学习这个库的时候，大家可以减少数据，这样生成GIF的时间就会快一些。
比如小F在接下来的实践中，基本都只选取了20天左右的数据。
对于其他图表，我们可以查看官方文档的API说明，得以了解。
下面我们就来看看其他动态图表的绘制方法吧！
动态条形图
elec_df = pd.read_csv("data/Aus_Elec_Gen_1980_2018.csv", index_col=0, parse_dates=[0], thousands=',')elec_df = elec_df.iloc[:20, :]elec_df.fillna(0).plot_animated('examples/example-electricity-generated-australia.gif', period_fmt="%Y", title='Australian Electricity Generation Sources 1980-2018')
动态柱状图
covid_df = pd.read_csv('data/covid19.csv', index_col=0, parse_dates=[0])covid_df.plot_animated(filename='examples/example-barv-chart.gif', orientation='v', n_visible=15)
动态曲线图
covid_df = pd.read_csv('data/covid19.csv', index_col=0, parse_dates=[0])covid_df.diff().fillna(0).plot_animated(filename='examples/example-line-chart.gif', kind='line', period_label={'x': 0.25, 'y': 0.9})
动态面积图
covid_df = pd.read_csv('data/covid19.csv', index_col=0, parse_dates=[0])covid_df.sum(axis=1).fillna(0).plot_animated(filename='examples/example-bar-chart.gif', kind='bar', period_label={'x': 0.1, 'y': 0.9}, enable_progress_bar=True, steps_per_period=2, interpolate_period=True, period_length=200)
动态散点图
max_temp_df = pd.read_csv("data/Newcastle_Australia_Max_Temps.csv", parse_dates={"Timestamp": ["Year", "Month", "Day"]},)min_temp_df = pd.read_csv("data/Newcastle_Australia_Min_Temps.csv", parse_dates={"Timestamp": ["Year", "Month", "Day"]},)
max_temp_df = max_temp_df.iloc[:5000, :]min_temp_df = min_temp_df.iloc[:5000, :]
merged_temp_df = pd.merge_asof(max_temp_df, min_temp_df, on="Timestamp")merged_temp_df.index = pd.to_datetime(merged_temp_df["Timestamp"].dt.strftime('%Y/%m/%d'))
keep_columns = ["Minimum temperature (Degree C)", "Maximum temperature (Degree C)"]merged_temp_df[keep_columns].resample("Y").mean().plot_animated(filename='examples/example-scatter-chart.gif', kind="scatter", title='Max & Min Temperature Newcastle, Australia')
动态饼状图
covid_df = pd.read_csv('data/covid19.csv', index_col=0, parse_dates=[0])covid_df.plot_animated(filename='examples/example-pie-chart.gif', kind="pie", rotatelabels=True, period_label={'x': 0, 'y': 0})
动态气泡图
multi_index_df = pd.read_csv("data/multi.csv", header=[0, 1], index_col=0)multi_index_df.index = pd.to_datetime(multi_index_df.index, dayfirst=True)
map_chart = multi_index_df.plot_animated( kind="bubble", filename="examples/example-bubble-chart.gif", x_data_label="Longitude", y_data_label="Latitude", size_data_label="Cases", color_data_label="Cases", vmax=5, steps_per_period=3, interpolate_period=True, period_length=500, dpi=100)
地理空间点图表
import geopandasimport pandas_aliveimport contextily
gdf = geopandas.read_file('data/nsw-covid19-cases-by-postcode.gpkg')gdf.index = gdf.postcodegdf = gdf.drop('postcode',axis=1)
result = gdf.iloc[:, :20]result['geometry'] = gdf.iloc[:, -1:]['geometry']
map_chart = result.plot_animated(filename='examples/example-geo-point-chart.gif', basemap_format={'source':contextily.providers.Stamen.Terrain})
多边形地理图表
import geopandasimport pandas_aliveimport contextily
gdf = geopandas.read_file('data/italy-covid-region.gpkg')gdf.index = gdf.regiongdf = gdf.drop('region',axis=1)
result = gdf.iloc[:, :20]result['geometry'] = gdf.iloc[:, -1:]['geometry']
map_chart = result.plot_animated(filename='examples/example-geo-polygon-chart.gif', basemap_format={'source': contextily.providers.Stamen.Terrain})
多个动态图表
covid_df = pd.read_csv('data/covid19.csv', index_col=0, parse_dates=[0])
animated_line_chart = covid_df.diff().fillna(0).plot_animated(kind='line', period_label=False,add_legend=False)animated_bar_chart = covid_df.plot_animated(n_visible=10)
pandas_alive.animate_multiple_plots('examples/example-bar-and-line-chart.gif', [animated_bar_chart, animated_line_chart], enable_progress_bar=True)
城市人口
def population(): urban_df = pd.read_csv("data/urban_pop.csv", index_col=0, parse_dates=[0])
animated_line_chart = ( urban_df.sum(axis=1) .pct_change() .fillna(method='bfill') .mul(100) .plot_animated(kind="line", title="Total % Change in Population", period_label=False, add_legend=False) )
animated_bar_chart = urban_df.plot_animated(n_visible=10, title='Top 10 Populous Countries', period_fmt="%Y")
pandas_alive.animate_multiple_plots('examples/example-bar-and-line-urban-chart.gif', [animated_bar_chart, animated_line_chart], title='Urban Population 1977 - 2018', adjust_subplot_top=0.85, enable_progress_bar=True)
G7国家平均寿命
def life(): data_raw = pd.read_csv("data/long.csv")
list_G7 = ["Canada","France","Germany","Italy","Japan","United Kingdom","United States", ]
data_raw = data_raw.pivot( index="Year", columns="Entity", values="Life expectancy (Gapminder, UN)" )
data = pd.DataFrame()data["Year"] = data_raw.reset_index()["Year"]for country in list_G7:data[country] = data_raw[country].values
data = data.fillna(method="pad")data = data.fillna(0)data = data.set_index("Year").loc[1900:].reset_index()
data["Year"] = pd.to_datetime(data.reset_index()["Year"].astype(str))
data = data.set_index("Year")data = data.iloc[:25, :]
animated_bar_chart = data.plot_animated( period_fmt="%Y", perpendicular_bar_func="mean", period_length=200, fixed_max=True )
animated_line_chart = data.plot_animated( kind="line", period_fmt="%Y", period_length=200, fixed_max=True )
pandas_alive.animate_multiple_plots("examples/life-expectancy.gif", plots=[animated_bar_chart, animated_line_chart], title="Life expectancy in G7 countries up to 2015", adjust_subplot_left=0.2, adjust_subplot_top=0.9, enable_progress_bar=True )
新南威尔斯州COVID可视化
def nsw():import geopandasimport pandas as pdimport pandas_aliveimport contextilyimport matplotlib.pyplot as pltimport json
with open('data/package_show.json', 'r', encoding='utf8')as fp: data = json.load(fp)
# Extract url to csv component covid_nsw_data_url = data["result"]["resources"][0]["url"] print(covid_nsw_data_url)
# Read csv from data API url nsw_covid = pd.read_csv('data/confirmed_cases_table1_location.csv') postcode_dataset = pd.read_csv("data/postcode-data.csv")
# Prepare data from NSW health dataset
nsw_covid = nsw_covid.fillna(9999) nsw_covid["postcode"] = nsw_covid["postcode"].astype(int)
grouped_df = nsw_covid.groupby(["notification_date", "postcode"]).size() grouped_df = pd.DataFrame(grouped_df).unstack() grouped_df.columns = grouped_df.columns.droplevel().astype(str)
grouped_df = grouped_df.fillna(0) grouped_df.index = pd.to_datetime(grouped_df.index)
cases_df = grouped_df
# Clean data in postcode dataset prior to matching
grouped_df = grouped_df.T postcode_dataset = postcode_dataset[postcode_dataset['Longitude'].notna()] postcode_dataset = postcode_dataset[postcode_dataset['Longitude'] != 0] postcode_dataset = postcode_dataset[postcode_dataset['Latitude'].notna()] postcode_dataset = postcode_dataset[postcode_dataset['Latitude'] != 0] postcode_dataset['Postcode'] = postcode_dataset['Postcode'].astype(str)
# Build GeoDataFrame from Lat Long dataset and make map chart grouped_df['Longitude'] = grouped_df.index.map(postcode_dataset.set_index('Postcode')['Longitude'].to_dict()) grouped_df['Latitude'] = grouped_df.index.map(postcode_dataset.set_index('Postcode')['Latitude'].to_dict()) gdf = geopandas.GeoDataFrame( grouped_df, geometry=geopandas.points_from_xy(grouped_df.Longitude, grouped_df.Latitude), crs="EPSG:4326") gdf = gdf.dropna()
# Prepare GeoDataFrame for writing to geopackage gdf = gdf.drop(['Longitude', 'Latitude'], axis=1) gdf.columns = gdf.columns.astype(str) gdf['postcode'] = gdf.index# gdf.to_file("data/nsw-covid19-cases-by-postcode.gpkg", layer='nsw-postcode-covid', driver="GPKG")
# Prepare GeoDataFrame for plotting gdf.index = gdf.postcode gdf = gdf.drop('postcode', axis=1) gdf = gdf.to_crs("EPSG:3857") # Web Mercator
result = gdf.iloc[:, :22] result['geometry'] = gdf.iloc[:, -1:]['geometry'] gdf = result
map_chart = gdf.plot_animated(basemap_format={'source': contextily.providers.Stamen.Terrain}, cmap='cool')
# cases_df.to_csv('data/nsw-covid-cases-by-postcode.csv') cases_df = cases_df.iloc[:22, :]
from datetime import datetime
bar_chart = cases_df.sum(axis=1).plot_animated( kind='line', label_events={'Ruby Princess Disembark': datetime.strptime("19/03/2020", "%d/%m/%Y"),# 'Lockdown': datetime.strptime("31/03/2020", "%d/%m/%Y") }, fill_under_line_color="blue", add_legend=False )
map_chart.ax.set_title('Cases by Location')
grouped_df = pd.read_csv('data/nsw-covid-cases-by-postcode.csv', index_col=0, parse_dates=[0]) grouped_df = grouped_df.iloc[:22, :]
line_chart = ( grouped_df.sum(axis=1) .cumsum() .fillna(0) .plot_animated(kind="line", period_label=False, title="Cumulative Total Cases", add_legend=False) )
def current_total(values): total = values.sum() s = f'Total : {int(total)}'return {'x': .85, 'y': .2, 's': s, 'ha': 'right', 'size': 11}
race_chart = grouped_df.cumsum().plot_animated( n_visible=5, title="Cases by Postcode", period_label=False, period_summary_func=current_total )
import time
timestr = time.strftime("%d/%m/%Y")
plots = [bar_chart, line_chart, map_chart, race_chart]
from matplotlib import rcParams
rcParams.update({"figure.autolayout": False})# make sure figures are `Figure()` instances figs = plt.Figure() gs = figs.add_gridspec(2, 3, hspace=0.5) f3_ax1 = figs.add_subplot(gs[0, :]) f3_ax1.set_title(bar_chart.title) bar_chart.ax = f3_ax1
f3_ax2 = figs.add_subplot(gs[1, 0]) f3_ax2.set_title(line_chart.title) line_chart.ax = f3_ax2
f3_ax3 = figs.add_subplot(gs[1, 1]) f3_ax3.set_title(map_chart.title) map_chart.ax = f3_ax3
f3_ax4 = figs.add_subplot(gs[1, 2]) f3_ax4.set_title(race_chart.title) race_chart.ax = f3_ax4
timestr = cases_df.index.max().strftime("%d/%m/%Y") figs.suptitle(f"NSW COVID-19 Confirmed Cases up to {timestr}")
pandas_alive.animate_multiple_plots('examples/nsw-covid.gif', plots, figs, enable_progress_bar=True )
意大利COVID可视化
def italy():import geopandasimport pandas as pdimport pandas_aliveimport contextilyimport matplotlib.pyplot as plt
region_gdf = geopandas.read_file('data/geo-data/italy-with-regions') region_gdf.NOME_REG = region_gdf.NOME_REG.str.lower().str.title() region_gdf = region_gdf.replace('Trentino-Alto Adige/Sudtirol', 'Trentino-Alto Adige') region_gdf = region_gdf.replace("Valle D'Aosta/Vallée D'Aoste\r\nValle D'Aosta/Vallée D'Aoste", "Valle d'Aosta")
italy_df = pd.read_csv('data/Regional Data - Sheet1.csv', index_col=0, header=1, parse_dates=[0])
italy_df = italy_df[italy_df['Region'] != 'NA']
cases_df = italy_df.iloc[:, :3] cases_df['Date'] = cases_df.index pivoted = cases_df.pivot(values='New positives', index='Date', columns='Region') pivoted.columns = pivoted.columns.astype(str) pivoted = pivoted.rename(columns={'nan': 'Unknown Region'})
cases_gdf = pivoted.T cases_gdf['geometry'] = cases_gdf.index.map(region_gdf.set_index('NOME_REG')['geometry'].to_dict())
cases_gdf = cases_gdf[cases_gdf['geometry'].notna()]
cases_gdf = geopandas.GeoDataFrame(cases_gdf, crs=region_gdf.crs, geometry=cases_gdf.geometry)
gdf = cases_gdf
result = gdf.iloc[:, :22] result['geometry'] = gdf.iloc[:, -1:]['geometry'] gdf = result
map_chart = gdf.plot_animated(basemap_format={'source': contextily.providers.Stamen.Terrain}, cmap='viridis')
cases_df = pivoted cases_df = cases_df.iloc[:22, :]
from datetime import datetime
bar_chart = cases_df.sum(axis=1).plot_animated( kind='line', label_events={'Schools Close': datetime.strptime("4/03/2020", "%d/%m/%Y"),'Phase I Lockdown': datetime.strptime("11/03/2020", "%d/%m/%Y"),# '1M Global Cases': datetime.strptime("02/04/2020", "%d/%m/%Y"),# '100k Global Deaths': datetime.strptime("10/04/2020", "%d/%m/%Y"),# 'Manufacturing Reopens': datetime.strptime("26/04/2020", "%d/%m/%Y"),# 'Phase II Lockdown': datetime.strptime("4/05/2020", "%d/%m/%Y"), }, fill_under_line_color="blue", add_legend=False )
map_chart.ax.set_title('Cases by Location')
line_chart = ( cases_df.sum(axis=1) .cumsum() .fillna(0) .plot_animated(kind="line", period_label=False, title="Cumulative Total Cases", add_legend=False) )
def current_total(values): total = values.sum() s = f'Total : {int(total)}'return {'x': .85, 'y': .1, 's': s, 'ha': 'right', 'size': 11}
race_chart = cases_df.cumsum().plot_animated( n_visible=5, title="Cases by Region", period_label=False, period_summary_func=current_total )
import time
timestr = time.strftime("%d/%m/%Y")
plots = [bar_chart, race_chart, map_chart, line_chart]
# Otherwise titles overlap and adjust_subplot does nothingfrom matplotlib import rcParamsfrom matplotlib.animation import FuncAnimation
rcParams.update({"figure.autolayout": False})# make sure figures are `Figure()` instances figs = plt.Figure() gs = figs.add_gridspec(2, 3, hspace=0.5) f3_ax1 = figs.add_subplot(gs[0, :]) f3_ax1.set_title(bar_chart.title) bar_chart.ax = f3_ax1
f3_ax2 = figs.add_subplot(gs[1, 0]) f3_ax2.set_title(race_chart.title) race_chart.ax = f3_ax2
f3_ax3 = figs.add_subplot(gs[1, 1]) f3_ax3.set_title(map_chart.title) map_chart.ax = f3_ax3
f3_ax4 = figs.add_subplot(gs[1, 2]) f3_ax4.set_title(line_chart.title) line_chart.ax = f3_ax4
axes = [f3_ax1, f3_ax2, f3_ax3, f3_ax4] timestr = cases_df.index.max().strftime("%d/%m/%Y") figs.suptitle(f"Italy COVID-19 Confirmed Cases up to {timestr}")
pandas_alive.animate_multiple_plots('examples/italy-covid.gif', plots, figs, enable_progress_bar=True )
单摆运动
def simple():import pandas as pdimport matplotlib.pyplot as pltimport pandas_aliveimport numpy as np
# Physical constants g = 9.81 L = .4 mu = 0.2
THETA_0 = np.pi * 70 / 180 # init angle = 70degs THETA_DOT_0 = 0 # no init angVel DELTA_T = 0.01 # time stepping T = 1.5 # time period
# Definition of ODE (ordinary differential equation)def get_theta_double_dot(theta, theta_dot):return -mu * theta_dot - (g / L) * np.sin(theta)
# Solution to the differential equationdef pendulum(t):# initialise changing values theta = THETA_0 theta_dot = THETA_DOT_0 delta_t = DELTA_T ang = [] ang_vel = [] ang_acc = [] times = []for time in np.arange(0, t, delta_t): theta_double_dot = get_theta_double_dot( theta, theta_dot ) theta += theta_dot * delta_t theta_dot += theta_double_dot * delta_t times.append(time) ang.append(theta) ang_vel.append(theta_dot) ang_acc.append(theta_double_dot) data = np.array([ang, ang_vel, ang_acc])return pd.DataFrame(data=data.T, index=np.array(times), columns=["angle", "ang_vel", "ang_acc"])
# units used for ref: ["angle [rad]", "ang_vel [rad/s]", "ang_acc [rad/s^2]"] df = pendulum(T) df.index.names = ["Time (s)"] print(df)
# generate dataFrame for animated bubble plot df2 = pd.DataFrame(index=df.index) df2["dx (m)"] = L * np.sin(df["angle"]) df2["dy (m)"] = -L * np.cos(df["angle"]) df2["ang_vel"] = abs(df["ang_vel"]) df2["size"] = df2["ang_vel"] * 100 # scale angular vels to get nice size on bubble plot print(df2)
# static pandas plots## print(plt.style.available)# NOTE: 2 lines below required in Jupyter to switch styles correctly plt.rcParams.update(plt.rcParamsDefault) plt.style.use("ggplot") # set plot style
fig, (ax1a, ax2b) = plt.subplots(1, 2, figsize=(8, 4), dpi=100) # 1 row, 2 subplots# fig.subplots_adjust(wspace=0.1) # space subplots in row fig.set_tight_layout(True) fontsize = "small"
df.plot(ax=ax1a).legend(fontsize=fontsize) ax1a.set_title("Outputs vs Time", fontsize="medium") ax1a.set_xlabel('Time [s]', fontsize=fontsize) ax1a.set_ylabel('Amplitudes', fontsize=fontsize);
df.plot(ax=ax2b, x="angle", y=["ang_vel", "ang_acc"]).legend(fontsize=fontsize) ax2b.set_title("Outputs vs Angle | Phase-Space", fontsize="medium") ax2b.set_xlabel('Angle [rad]', fontsize=fontsize) ax2b.set_ylabel('Angular Velocity / Acc', fontsize=fontsize)
# sample scatter plot with colorbar fig, ax = plt.subplots() sc = ax.scatter(df2["dx (m)"], df2["dy (m)"], s=df2["size"] * .1, c=df2["ang_vel"], cmap="jet") cbar = fig.colorbar(sc) cbar.set_label(label="ang_vel [rad/s]", fontsize="small")# sc.set_clim(350, 400) ax.tick_params(labelrotation=0, labelsize="medium") ax_scale = 1. ax.set_xlim(-L * ax_scale, L * ax_scale) ax.set_ylim(-L * ax_scale - 0.1, L * ax_scale - 0.1)# make axes square: a circle shows as a circle ax.set_aspect(1 / ax.get_data_ratio()) ax.arrow(0, 0, df2["dx (m)"].iloc[-1], df2["dy (m)"].iloc[-1], color="dimgray", ls=":", lw=2.5, width=.0, head_width=0, zorder=-1 ) ax.text(0, 0.15, s="size and colour of pendulum bob\nbased on pd column\nfor angular velocity", ha='center', va='center')
# plt.show()
dpi = 100 ax_scale = 1.1 figsize = (3, 3) fontsize = "small"
# set up figure to pass onto `pandas_alive`# NOTE: by using Figure (capital F) instead of figure() `FuncAnimation` seems to run twice as fast!# fig1, ax1 = plt.subplots() fig1 = plt.Figure() ax1 = fig1.add_subplot() fig1.set_size_inches(figsize) ax1.set_title("Simple pendulum animation, L=" + str(L) + "m", fontsize="medium") ax1.set_xlabel("Time (s)", color='dimgray', fontsize=fontsize) ax1.set_ylabel("Amplitudes", color='dimgray', fontsize=fontsize) ax1.tick_params(labelsize=fontsize)
# pandas_alive line_chart = df.plot_animated(filename="pend-line.gif", kind='line', period_label={'x': 0.05, 'y': 0.9}, steps_per_period=1, interpolate_period=False, period_length=50, period_fmt='Time:{x:10.2f}', enable_progress_bar=True, fixed_max=True, dpi=100, fig=fig1 ) plt.close()
# Video('examples/pend-line.mp4', html_attributes="controls muted autoplay")
# set up and generate animated scatter plot#
# set up figure to pass onto `pandas_alive`# NOTE: by using Figure (capital F) instead of figure() `FuncAnimation` seems to run twice as fast! fig1sc = plt.Figure() ax1sc = fig1sc.add_subplot() fig1sc.set_size_inches(figsize) ax1sc.set_title("Simple pendulum animation, L=" + str(L) + "m", fontsize="medium") ax1sc.set_xlabel("Time (s)", color='dimgray', fontsize=fontsize) ax1sc.set_ylabel("Amplitudes", color='dimgray', fontsize=fontsize) ax1sc.tick_params(labelsize=fontsize)
# pandas_alive scatter_chart = df.plot_animated(filename="pend-scatter.gif", kind='scatter', period_label={'x': 0.05, 'y': 0.9}, steps_per_period=1, interpolate_period=False, period_length=50, period_fmt='Time:{x:10.2f}', enable_progress_bar=True, fixed_max=True, dpi=100, fig=fig1sc, size="ang_vel" ) plt.close()
print("Points size follows one of the pd columns: ang_vel")# Video('./pend-scatter.gif', html_attributes="controls muted autoplay")
# set up and generate animated bar race chart## set up figure to pass onto `pandas_alive`# NOTE: by using Figure (capital F) instead of figure() `FuncAnimation` seems to run twice as fast! fig2 = plt.Figure() ax2 = fig2.add_subplot() fig2.set_size_inches(figsize) ax2.set_title("Simple pendulum animation, L=" + str(L) + "m", fontsize="medium") ax2.set_xlabel("Amplitudes", color='dimgray', fontsize=fontsize) ax2.set_ylabel("", color='dimgray', fontsize="x-small") ax2.tick_params(labelsize=fontsize)
# pandas_alive race_chart = df.plot_animated(filename="pend-race.gif", kind='race', period_label={'x': 0.05, 'y': 0.9}, steps_per_period=1, interpolate_period=False, period_length=50, period_fmt='Time:{x:10.2f}', enable_progress_bar=True, fixed_max=False, dpi=100, fig=fig2 ) plt.close()
# set up and generate bubble animated plot#
# set up figure to pass onto `pandas_alive`# NOTE: by using Figure (capital F) instead of figure() `FuncAnimation` seems to run twice as fast! fig3 = plt.Figure() ax3 = fig3.add_subplot() fig3.set_size_inches(figsize) ax3.set_title("Simple pendulum animation, L=" + str(L) + "m", fontsize="medium") ax3.set_xlabel("Hor Displacement (m)", color='dimgray', fontsize=fontsize) ax3.set_ylabel("Ver Displacement (m)", color='dimgray', fontsize=fontsize)# limits & ratio below get the graph square ax3.set_xlim(-L * ax_scale, L * ax_scale) ax3.set_ylim(-L * ax_scale - 0.1, L * ax_scale - 0.1) ratio = 1. # this is visual ratio of axes ax3.set_aspect(ratio / ax3.get_data_ratio())
ax3.arrow(0, 0, df2["dx (m)"].iloc[-1], df2["dy (m)"].iloc[-1], color="dimgray", ls=":", lw=1, width=.0, head_width=0, zorder=-1)
# pandas_alive bubble_chart = df2.plot_animated( kind="bubble", filename="pend-bubble.gif", x_data_label="dx (m)", y_data_label="dy (m)", size_data_label="size", color_data_label="ang_vel", cmap="jet", period_label={'x': 0.05, 'y': 0.9}, vmin=None, vmax=None, steps_per_period=1, interpolate_period=False, period_length=50, period_fmt='Time:{x:10.2f}s', enable_progress_bar=True, fixed_max=False, dpi=dpi, fig=fig3 ) plt.close()
print("Bubble size & colour animates with pd data column for ang_vel.")
# Combined plots# fontsize = "x-small"# Otherwise titles overlap and subplots_adjust does nothingfrom matplotlib import rcParams rcParams.update({"figure.autolayout": False})
figs = plt.Figure(figsize=(9, 4), dpi=100) figs.subplots_adjust(wspace=0.1) gs = figs.add_gridspec(2, 2)
ax1 = figs.add_subplot(gs[0, 0]) ax1.set_xlabel("Time(s)", color='dimgray', fontsize=fontsize) ax1.set_ylabel("Amplitudes", color='dimgray', fontsize=fontsize) ax1.tick_params(labelsize=fontsize)
ax2 = figs.add_subplot(gs[1, 0]) ax2.set_xlabel("Amplitudes", color='dimgray', fontsize=fontsize) ax2.set_ylabel("", color='dimgray', fontsize=fontsize) ax2.tick_params(labelsize=fontsize)
ax3 = figs.add_subplot(gs[:, 1]) ax3.set_xlabel("Hor Displacement (m)", color='dimgray', fontsize=fontsize) ax3.set_ylabel("Ver Displacement (m)", color='dimgray', fontsize=fontsize) ax3.tick_params(labelsize=fontsize)# limits & ratio below get the graph square ax3.set_xlim(-L * ax_scale, L * ax_scale) ax3.set_ylim(-L * ax_scale - 0.1, L * ax_scale - 0.1) ratio = 1. # this is visual ratio of axes ax3.set_aspect(ratio / ax3.get_data_ratio())
line_chart.ax = ax1 race_chart.ax = ax2 bubble_chart.ax = ax3
plots = [line_chart, race_chart, bubble_chart]# pandas_alive combined using custom figure pandas_alive.animate_multiple_plots( filename='pend-combined.gif', plots=plots, custom_fig=figs, dpi=100, enable_progress_bar=True, adjust_subplot_left=0.2, adjust_subplot_right=None, title="Simple pendulum animations, L=" + str(L) + "m", title_fontsize="medium" ) plt.close()
最后如果你想完成中文动态图表的制作，加入中文显示代码即可。
# 中文显示plt.rcParams['font.sans-serif'] = ['SimHei'] # Windowsplt.rcParams['font.sans-serif'] = ['Hiragino Sans GB'] # Macplt.rcParams['axes.unicode_minus'] = False
# 读取数据df_result = pd.read_csv('data/yuhuanshui.csv', index_col=0, parse_dates=[0])# 生成图表animated_line_chart = df_result.diff().fillna(0).plot_animated(kind='line', period_label=False, add_legend=False)animated_bar_chart = df_result.plot_animated(n_visible=10)pandas_alive.animate_multiple_plots('examples/yuhuanshui.gif', [animated_bar_chart, animated_line_chart], enable_progress_bar=True, title='我是余欢水演职人员热度排行')
还是使用演员的百度指数数据。
GitHub地址：
https://github.com/JackMcKew/pandas_alive
使用文档：
https://jackmckew.github.io/pandas_alive/
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来源：oschina
链接：https://my.oschina.net/u/4265475/blog/4776731