plotly使用基本介绍

plotly是开挂的作图神器，可以供js, python, R, DB等使用。具体见官网plotly官网

1. 安装

pip install plotly
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更新

pip install plotly --upgrade
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2. 在线使用，画的图会存入云账户中

import plotly#设置用户名和API-Key
plotly.tools.set_credentials_file(username='DemoAccount', api_key='lr1c37zw81')
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3. 离线使用

import plotly
from plotly.graph_objs import Scatter, Layoutplotly.offline.init_notebook_mode(connected=True)
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4. py.plot和py.iplot区别

py.plot会生成一个离线的html文件，里面放置图片。而py.iplot则直接在ipython notebook里面生成图片。

5. 散点图和折线图

基本散点图:

import plotly.offline as py
from plotly.graph_objs import Scatter, Layout
import plotly.graph_objs as gopy.init_notebook_mode(connected=True)trace1=go.Scatter(x=[1,2],y=[1,2]
)
trace2=go.Scatter(x=[1,2],y=[2,1]
)
py.iplot([trace1, trace2])
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可以改变mode,换成散点图:

trace=go.Scatter(x=[1,2,3],y=[1,2,3],marker=dict(color=['red','blue','green'],size=[30,80,200],),mode='markers'
)
py.iplot([trace])
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trace=go.Scatter(x=[1,2,3],y=[1,2,3],marker=dict(color=['red','blue','green'],size=[30,80,200],),mode='markers+lines'
)
py.iplot([trace])
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6. 设置图例和图例位置

trace1=go.Scatter(name="lenged1",x=[1,2],y=[2,1]
)
trace2=go.Scatter(name="lenged2",x=[2,1],y=[2,1]
)
layout=go.Layout(showlegend=True,# 设置图例相对于左下角的位置legend=dict(x=0.9,y=1.1)
)
data=[trace1, trace2]
fig=go.Figure(data=data, layout=layout)
py.iplot(fig)
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为点加上文字:

trace1=go.Scatter(x=[1,2,3],y=[1,2,3],text=['A', 'B', 'C'],textposition="top center",mode="markers+text",marker=dict(size=[20,20,20])
)
data=[trace1]
py.iplot(data)
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更多设置: plotly.Scatter设置

7. 设置坐标轴

trace=go.Scatter(x=[1,2,3,4],y=[1,2,3,6]
)
axis_template=dict(showgrid=True,  #网格zeroline=True,  #是否显示基线,即沿着(0,0)画出x轴和y轴nticks=20,showline=True,title='X axis',mirror='all',zerolinecolor="#FF0000"
)
layout=go.Layout(xaxis=axis_template,yaxis=axis_template
)
data=[trace]
fig=go.Figure(data=data,layout=layout
)
py.iplot(fig)
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更多关于坐标轴设置的参数详见: plotly坐标轴设置

8.Heatmap

trace=go.Heatmap(z=[[1,2,3,4],[5,6,7,8]]
)
data=[trace]
py.iplot(data)
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8. Barchart

trace=go.Bar(x=[1,2],y=[1,2],marker=dict(color=["#FF0000", "#00FF00"],)
)
data=[trace]
py.iplot(data)
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更多设置：plotly.Bar

9. 填充区域

trace=go.Scatter(x=[1,2,6],y=[1,2,0.5],fill="tonexty",fillcolor="#FF0"
)
data=[trace]
py.iplot(data)
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10. 直方图

trace=go.Histogram(x=[1,2,3,3,3,4,5],marker=dict(color=["#F0F","FF0","0FF"])
)
data=[trace]
py.iplot(data)
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11. 画地图

trace=go.Scattergeo(lon=[100, 400],lat=[0,0],marker=dict(color=['red', 'blue'],size=[30,50]),mode="markers"
)
data=[trace]
py.iplot(data)
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12. 3D表面图

trace=go.Surface(colorscale='Viridis',z=[[3,5,8,13],[21,13,8,5]]
)
data=[trace]
py.iplot(data)
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13, 箱型图(Box-plot)

trace=go.Box(x=[1,2,3,3,3,4,5]
)
data=[trace]
py.iplot(data)
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14. 画地图

trace=go.Choropleth(locations=['AZ','CA','VT'],locationmode='USA-states',colorscale=['Viridis'],z=[10,20,40]
)
layout=dict(geo=dict(scope='usa')
)
data=[trace]
map=go.Figure(data=data, layout=layout)
py.iplot(map)
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15. 3D点图

trace=go.Scatter3d(x=[9,8,5,1],y=[1,2,4,8],z=[11,8,15,3],mode="lines"
)
data=[trace]
py.iplot(data)
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16. 2维Historgram

trace=go.Histogram2d(x=[1,2,3,3,3,4,5],y=[1,2,3,3,3,4,5]
)
data=[trace]
py.iplot(data)
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