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ComponentKeys

是 TimeSeries 和 EventSeries 的一个选项，用于指定各个分量的键.

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ComponentKeys

ComponentKeys

是 TimeSeries 和 EventSeries 的一个选项，用于指定各个分量的键.

更多信息

  • ComponentKeys 通常用于为时间序列或事件序列的数据分量命名.
  • ComponentKeys 的可能设置包括：
  • Automatic从数据中自动选择分量键 »
    None返回简单的时间序列或事件序列 »
    {com1,com2,…}返回具有指定分量名 comi 的时间序列或事件序列 »
  • TimeSeries[vals,times,keys] 等价于 TimeSeries[vals,times,ComponentKeyskeys].

范例

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基本范例  (2)

构造一个具有分量键 "a" 和 "b" 的时间序列：

Wolfram Language code: TimeSeries[{{.1, "cat"}, {.2, "dog"}, {.3, "fox"}}, {{Yesterday, Today, Tomorrow}}, ComponentKeys -> {"a", "b"}]

通过转换为 Tabular 显示数据：

Wolfram Language code: Tabular[%]

从满月和新月的日期对列表创建事件序列：

Wolfram Language code: EventSeries[{{DateObject[{2026, 1, 3, 4, 2, 54.5329}, "Instant", "Gregorian", -6.], DateObject[{2026, 1, 18, 13, 51, 58.9335}, "Instant", "Gregorian", -6.]}, {DateObject[{2026, 2, 1, 16, 9, 14.7054}, "Instant", "Gregorian", -6.], DateObject[{2026, 2, 17, 6, 1, 9.07329}, "Instant", "Gregorian", -6.]}, {DateObject[{2026, 3, 3, 5, 37, 53.7335}, "Instant", "Gregorian", -6.], DateObject[{2026, 3, 18, 19, 23, 28.7273}, "Instant", "Gregorian", -6.]}}, {DateObject[{2026, 1}], Automatic, "Month"}, ComponentKeys -> {"FullMoon", "NewMoon"}]

通过转换为 Tabular 显示数据：

Wolfram Language code: Tabular[%]

范围  (6)

给出显式的分量键：

Wolfram Language code: TimeSeries[{{.1, "cat"}, {.2, "dog"}, {.3, "fox"}}, {{Yesterday, Today, Tomorrow}}, ComponentKeys -> {"a", "b"}]

通过转换为 Tabular 显示数据：

Wolfram Language code: Tabular[%]

当给定的列表不完整时，分量键会自动添加：

Wolfram Language code: TimeSeries[{{.1, "cat"}, {.2, "dog"}, {.3, "fox"}}, {{Yesterday, Today, Tomorrow}}, ComponentKeys -> {"number"}]
Wolfram Language code: ColumnKeys[%]

通过给出 {} 生成所有分量键：

Wolfram Language code: TimeSeries[{{.1, "cat"}, {.2, "dog"}, {.3, "fox"}}, {{Yesterday, Today, Tomorrow}}, ComponentKeys -> {}]
Wolfram Language code: ColumnKeys[%]

Automatic 的 ComponentKeys 设置会保留输入键：

Wolfram Language code: Tabular[{{.1, "cat"}, {.2, "dog"}, {.3, "fox"}}, {"K1", "K2"}]
Wolfram Language code: tab = Tabular[Association["RawSchema" -> Association["ColumnProperties" -> Association["K1" -> Association["ElementType" -> "Real64"], "K2" -> Association["ElementType" -> "String"]], "KeyColumns" -> None, "Backend" -> "WolframKernel"], "Options" -> {}, "BackendData" -> Association["ColumnData" -> DataStructure["ColumnTable", {{TabularColumn[Association["Data" -> {{0.1, 0.2, 0.3}, {}, None}, "ElementType" -> "Real64"]], TabularColumn[Association[ "Data" -> {{3, {0, 3, 6, 9}, "catdogfox"}, {}, None}, "ElementType" -> "String"]]}}]]]];
Wolfram Language code: TimeSeries[tab, {{Yesterday, Today, Tomorrow}}, ComponentKeys -> Automatic]
Wolfram Language code: Tabular[%]

当给定了分量键时，它们会覆盖输入的键：

Wolfram Language code: tab = Tabular[Association["RawSchema" -> Association["ColumnProperties" -> Association["K1" -> Association["ElementType" -> "Real64"], "K2" -> Association["ElementType" -> "String"]], "KeyColumns" -> None, "Backend" -> "WolframKernel"], "Options" -> {}, "BackendData" -> Association["ColumnData" -> DataStructure["ColumnTable", {{TabularColumn[Association["Data" -> {{0.1, 0.2, 0.3}, {}, None}, "ElementType" -> "Real64"]], TabularColumn[Association[ "Data" -> {{3, {0, 3, 6, 9}, "catdogfox"}, {}, None}, "ElementType" -> "String"]]}}]]]];
Wolfram Language code: TimeSeries[tab, {{Yesterday, Today, Tomorrow}}, ComponentKeys -> {"a", "b"}]
Wolfram Language code: Tabular[%]

当组件键设置为 None 时，输出的时间序列是简单的，不包含显式的分量：

Wolfram Language code: tab = Tabular[Association["RawSchema" -> Association["ColumnProperties" -> Association["K1" -> Association["ElementType" -> "Real64"], "K2" -> Association["ElementType" -> "String"]], "KeyColumns" -> None, "Backend" -> "WolframKernel"], "Options" -> {}, "BackendData" -> Association["ColumnData" -> DataStructure["ColumnTable", {{TabularColumn[Association["Data" -> {{0.1, 0.2, 0.3}, {}, None}, "ElementType" -> "Real64"]], TabularColumn[Association[ "Data" -> {{3, {0, 3, 6, 9}, "catdogfox"}, {}, None}, "ElementType" -> "String"]]}}]]]];
Wolfram Language code: TimeSeries[tab, {{Yesterday, Today, Tomorrow}}, ComponentKeys -> None]
Wolfram Language code: Tabular[%]

当没有输入键时，Automatic 设置将保留简单的分量输入：

Wolfram Language code: TimeSeries[{{.1, "cat"}, {.2, "dog"}, {.3, "fox"}}, {{Yesterday, Today, Tomorrow}}, ComponentKeys -> Automatic]
Wolfram Language code: Tabular[%]

属性和关系  (2)

分量键可以作为第三个参数或作为选项提供：

Wolfram Language code: vals = {{.1, "cat"}, {.2, "dog"}, {.3, "fox"}}; times = {Yesterday, Today, Tomorrow}; keys = {"number", "animal"};
Wolfram Language code: TimeSeries[vals, {times}, keys]
Wolfram Language code: TimeSeries[vals, {times}, ComponentKeys -> keys] === %

作为参数给出的分量键会覆盖由选项给出的键：

Wolfram Language code: TimeSeries[{{.1, "cat"}, {.2, "dog"}, {.3, "fox"}}, {{Yesterday, Today, Tomorrow}}, {"A", "B"}, ComponentKeys -> {"a", "b"}]
Wolfram Language code: Tabular[%]
Wolfram Research (2026)，ComponentKeys，Wolfram 语言函数，https://reference.wolfram.com/language/ref/ComponentKeys.html.

文本

Wolfram Research (2026)，ComponentKeys，Wolfram 语言函数，https://reference.wolfram.com/language/ref/ComponentKeys.html.

CMS

Wolfram 语言. 2026. "ComponentKeys." Wolfram 语言与系统参考资料中心. Wolfram Research. https://reference.wolfram.com/language/ref/ComponentKeys.html.

APA

Wolfram 语言. (2026). ComponentKeys. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/ref/ComponentKeys.html 年

BibTeX

@misc{reference.wolfram_2026_componentkeys, author="Wolfram Research", title="{ComponentKeys}", year="2026", howpublished="\url{https://reference.wolfram.com/language/ref/ComponentKeys.html}", note=[Accessed: 07-September-2026]}

BibLaTeX

@online{reference.wolfram_2026_componentkeys, organization={Wolfram Research}, title={ComponentKeys}, year={2026}, url={https://reference.wolfram.com/language/ref/ComponentKeys.html}, note=[Accessed: 07-September-2026]}