更多投影
版本 11 充分扩展了所支持的地图投影种类.
目前其中包含了 151 种球状模型的投影,这比之前的 Wolfram 语言增加了将近 4 倍.
In[1]:=
![Click for copyable input](assets.zh/many-more-projections/In_44.png)
Short[projections = GeoProjectionData["Spherical"], 4]
Out[1]//Short=
![](assets.zh/many-more-projections/O_37.png)
他们可按不同标准进行分类. 每个投影都属于不同的类. 例如,麦卡托投影为带有共形附加属性的圆柱投影.
In[2]:=
![Click for copyable input](assets.zh/many-more-projections/In_45.png)
GeoProjectionData["Mercator", "Classes"]
Out[2]=
![](assets.zh/many-more-projections/O_38.png)
以下为目前可以使用的所有圆柱投影.
In[3]:=
![Click for copyable input](assets.zh/many-more-projections/In_46.png)
GeoProjectionData["Azimuthal"]
Out[3]=
![](assets.zh/many-more-projections/O_39.png)
In[4]:=
![Click for copyable input](assets.zh/many-more-projections/In_47.png)
GeoProjectionData["Cylindrical"]
Out[4]=
![](assets.zh/many-more-projections/O_40.png)
以下为球状模型的所有投影的类型.
In[5]:=
![Click for copyable input](assets.zh/many-more-projections/In_48.png)
classes = GeoProjectionData[#, "Classes"] & /@ projections;
如下所示,他们可以分为不同类型. "PseudoCylindrical" 类型最为常见.
In[6]:=
![Click for copyable input](assets.zh/many-more-projections/In_49.png)
Tally[First /@ classes]
Out[6]=
![](assets.zh/many-more-projections/O_41.png)
以下为上述 9 种类型的范例.
显示完整的 Wolfram 语言输入
Out[8]=
![](assets.zh/many-more-projections/O_42.png)