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UnitSimplify[quantity]

指定された quantity の単位を簡約しようと試みる．

詳細とオプション
Details and Options Details and Options
例題  
例  
スコープ  
オプション  
UnityDimensions  
特性と関係  
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テクニカルノート
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UnitSimplify

UnitSimplify[quantity]

指定された quantity の単位を簡約しようと試みる．

詳細とオプション

例題

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例  (3)

複合単位のQuantityをより単純な単位の同等のQuantityに変換する：

Wolfram Language code: UnitSimplify[Quantity[1, ("Joules" / "Seconds")]]
Wolfram Language code: UnitSimplify[Quantity[1, ("Seconds" ^ 4 * "Amperes" ^ 2) / ("Kilograms" * "Centimeters" ^ 2)]]

UnitSimplifyは単一要素の単位が見付からない場合には複合単位を返すこともある：

Wolfram Language code: UnitSimplify[Quantity[3 / 4, "Kilograms" / ("Volts" * "Hours")]]

UnitSimplifyは，数量の値に基づいてリスケールもする：

Wolfram Language code: UnitSimplify[Quantity[9.14 ^ 12, "Meters"]]
Wolfram Language code: UnitSimplify[Quantity[1423.2, "Seconds"]]

スコープ  (4)

時系列中のQuantity式から値を得る：

Wolfram Language code: v = Quantity[RandomReal[1, 4], ("Joules" / "Seconds")]; t = {1, 2, 5, 10}; ts = TimeSeries[v, {t}]
Wolfram Language code: ts[10]
Wolfram Language code: UnitSimplify[ts]
Wolfram Language code: %[10]

UnitSimplifyでQuantityDistribution指定を使う：

Wolfram Language code: 𝒟 = NormalDistribution[Quantity[120, "Meters"*"Newtons"], Quantity[16, "Meters"*"Newtons"]]
Wolfram Language code: UnitSimplify[𝒟]

UnitSimplifyでSparseArray指定を使う：

Wolfram Language code: UnitSimplify[SparseArray[{1 -> Quantity[8, "Kilograms"/("Meters"*"Seconds"^2)], 2 -> Quantity[7, "Meters"*"Newtons"]}]]
Wolfram Language code: %//Normal

UnitSimplifyでAssociation指定を使う：

Wolfram Language code: UnitSimplify[<|"Quantity1" -> Quantity[260, "Kilograms"/("Amperes"*"Seconds"^2)], "Quantity2" -> Quantity[3, "Joules"/"Seconds"]|>]

オプション  (3)

UnityDimensions  (3)

UnitSimplifyは"AngularDegrees"のように角度単位を自動的に相殺しない：

Wolfram Language code: UnitSimplify[Quantity[3, ("AngularDegrees"/"Seconds")]]

UnityDimensionsを使って角度単位を取り除くことができる：

Wolfram Language code: UnitSimplify[%, UnityDimensions -> {"AngleUnit"}]

UnityDimensionsAutomaticを使って"AngleUnit"次元と"SolidAngleUnit"次元の両方を取り除く：

Wolfram Language code: UnitSimplify[Quantity[30.2, "AngularDegrees" / "Steradians"], UnityDimensions -> Automatic]

UnityDimensionsは，約分に際して任意数の次元を含むことができる：

Wolfram Language code: q = Quantity[14.2, "Kilograms""Meters" ^ 2 / "Seconds" ^ 2]
Wolfram Language code: UnitSimplify[q, UnityDimensions -> {"MassUnit"}]
Wolfram Language code: UnitSimplify[q, UnityDimensions -> {"MassUnit", "TimeUnit"}]
Wolfram Language code: UnitSimplify[q, UnityDimensions -> {"MassUnit", "LengthUnit", "TimeUnit"}]

特性と関係  (1)

UnitSimplifyはリストに縫い込まれる：

Wolfram Language code: UnitSimplify[{Quantity[11, "Seconds"/"Farads"], Quantity[4, "Kilograms"*"Sieverts"], Quantity[5, "Meters"^2*"Pascals"]}]
Wolfram Language code: UnitSimplify[{Quantity[3, "Farads"*"Joules"], {Quantity[27, "Webers"/"Henries"]}, Quantity[14, "Amperes"*"Ohms"]}]
Wolfram Research (2012), UnitSimplify, Wolfram言語関数， https://reference.wolfram.com/language/ref/UnitSimplify.html.

テキスト

Wolfram Research (2012), UnitSimplify, Wolfram言語関数， https://reference.wolfram.com/language/ref/UnitSimplify.html.

CMS

Wolfram Language. 2012. "UnitSimplify." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/UnitSimplify.html.

APA

Wolfram Language. (2012). UnitSimplify. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/UnitSimplify.html

BibTeX

@misc{reference.wolfram_2026_unitsimplify, author="Wolfram Research", title="{UnitSimplify}", year="2012", howpublished="\url{https://reference.wolfram.com/language/ref/UnitSimplify.html}", note=[Accessed: 03-November-2026]}

BibLaTeX

@online{reference.wolfram_2026_unitsimplify, organization={Wolfram Research}, title={UnitSimplify}, year={2012}, url={https://reference.wolfram.com/language/ref/UnitSimplify.html}, note=[Accessed: 03-November-2026]}