混合量
混合量会在以下多个情境中出现:货币、时间、距离、重量、角度等.
In[1]:=
![Click for copyable input](assets.zh/mixed-quantities/In_36.png)
Quantity[MixedMagnitude[{2, 35, 21.2}],
MixedUnit[{"Hours", "Minutes", "Seconds"}]]
Out[1]=
![](assets.zh/mixed-quantities/O_34.png)
In[2]:=
![Click for copyable input](assets.zh/mixed-quantities/In_37.png)
UnitConvert[Quantity[75.562, "AngularDegrees"],
MixedUnit[{"AngularDegrees", "ArcMinutes", "ArcSeconds"}]]
Out[2]=
![](assets.zh/mixed-quantities/O_35.png)
In[3]:=
![Click for copyable input](assets.zh/mixed-quantities/In_38.png)
Quantity[MixedMagnitude[{5, 11}], MixedUnit[{"Feet", "Inches"}]]
Out[3]=
![](assets.zh/mixed-quantities/O_36.png)
In[4]:=
![Click for copyable input](assets.zh/mixed-quantities/In_39.png)
Quantity[MixedMagnitude[{5, 11}], MixedUnit[{"Feet", "Inches"}]];
% + Quantity[2.5, "Feet"]
Out[4]=
![](assets.zh/mixed-quantities/O_37.png)
函数 SiderealTime 返回混合量. 找出你现在所在位置的当前恒星时(sidereal time).
In[5]:=
![Click for copyable input](assets.zh/mixed-quantities/In_40.png)
stime = SiderealTime[]
Out[5]=
![](assets.zh/mixed-quantities/O_38.png)
获取太阳当前位置的赤道坐标.
In[6]:=
![Click for copyable input](assets.zh/mixed-quantities/In_41.png)
sunpos = SunPosition[CelestialSystem -> "Equatorial"]
Out[6]=
![](assets.zh/mixed-quantities/O_39.png)
计算月亮在统一坐标系统中的位置.
In[7]:=
![Click for copyable input](assets.zh/mixed-quantities/In_42.png)
moonpos = MoonPosition[CelestialSystem -> "Equatorial"]
Out[7]=
![](assets.zh/mixed-quantities/O_40.png)
找出行星的赤经坐标.
In[8]:=
![Click for copyable input](assets.zh/mixed-quantities/In_43.png)
planetpos =
QuantityMagnitude[
DeleteMissing[
EntityValue[EntityClass["Planet", All],
EntityProperty["Planet", "RightAscension"]]],
"HoursOfRightAscension"]
Out[8]=
![](assets.zh/mixed-quantities/O_41.png)
将不同的位置度量结合进每一个天体的赤经列表中.
In[9]:=
![Click for copyable input](assets.zh/mixed-quantities/In_44.png)
ascensions = Join[ {0, moonpos[[1, 1]] - sunpos[[1, 1]]}, planetpos];
显示完整的 Wolfram 语言输入
创建从南极观测时行星、太阳和月亮的位置图形视图.
显示完整的 Wolfram 语言输入
Out[11]=
![](assets.zh/mixed-quantities/O_42.png)