关于Python可视化Dash工具之plotly基本图形示例详解

Plotly Express是对 Plotly.py 的高级封装，内置了大量实用、现代的绘图模板，用户只需调用简单的API函数，即可快速生成漂亮的互动图表，可满足90%以上的应用场景。

本文借助Plotly Express提供的几个样例库进行散点图、折线图、饼图、柱状图、气泡图、桑基图、玫瑰环图、堆积图、二维面积图、甘特图等基本图形的实现。

代码示例

import plotly.express as px
df = px.data.iris()
#Index(['sepal_length', 'sepal_width', 'petal_length', 'petal_width', 'species','species_id'],dtype='object')
#   sepal_length sepal_width ...  species species_id
# 0       5.1     3.5 ...   setosa      1
# 1       4.9     3.0 ...   setosa      1
# 2       4.7     3.2 ...   setosa      1
# ..      ...     ... ...    ...     ...
# 149      5.9     3.0 ... virginica      3
# plotly.express.scatter(data_frame=None, x=None, y=None,
# color=None, symbol=None, size=None,
# hover_name=None, hover_data=None, custom_data=None, text=None,
# facet_row=None, facet_col=None, facet_col_wrap=0, facet_row_spacing=None, facet_col_spacing=None,
# error_x=None, error_x_minus=None, error_y=None, error_y_minus=None,
# animation_frame=None, animation_group=None,
# category_orders=None, labels=None, orientation=None,
# color_discrete_sequence=None, color_discrete_map=None, color_continuous_scale=None,
# range_color=None, color_continuous_midpoint=None,
# symbol_sequence=None, symbol_map=None, opacity=None,
# size_max=None, marginal_x=None, marginal_y=None,
# trendline=None, trendline_color_override=None,
# log_x=False, log_y=False, range_x=None, range_y=None,
# render_mode='auto', id="codetool">