作为注释的数据集
Dataset 对象可被直接用做 EntityValue 的注释.
构建稀有气体属性的数据集.
In[1]:=
![Click for copyable input](assets.zh/dataset-as-an-annotation/In_68.png)
gases = EntityValue[
EntityClass["Element", "NobleGas"], {"BoilingPoint", "Density"},
"Dataset"]
Out[1]=
![](assets.zh/dataset-as-an-annotation/O_71.png)
找出有最高沸点温度的两个原子.
In[2]:=
![Click for copyable input](assets.zh/dataset-as-an-annotation/In_69.png)
gases[TakeLargest[2], "BoilingPoint"]
Out[2]=
![](assets.zh/dataset-as-an-annotation/O_72.png)
找出密度最小的两个原子.
In[3]:=
![Click for copyable input](assets.zh/dataset-as-an-annotation/In_70.png)
gases[TakeSmallest[2], "Density"]
Out[3]=
![](assets.zh/dataset-as-an-annotation/O_73.png)
在二维绘图中可视化每个稀有气体的密度和沸点.
In[4]:=
![Click for copyable input](assets.zh/dataset-as-an-annotation/In_71.png)
ListLogPlot[gases, Frame -> True, FrameLabel -> Automatic]
Out[4]=
![](assets.zh/dataset-as-an-annotation/O_74.png)