# 索引数组参数

## 一般描述

使用索引参数来索引参数数组的参数。

此参数的一个示例用法是根据当前的需求储蓄水平（按浮点数计算）返回需求储蓄系数（浮动值） *索引参数*）。 [API 参考资料](https://pywr.github.io/pywr-docs/master/api/generated/pywr.parameters.IndexedArrayParameter.html#pywr.parameters.IndexedArrayParameter)

## 属性

<table><thead><tr><th width="158">姓名</th><th width="409">描述</th><th>必填项</th></tr></thead><tbody><tr><td>索引_参数</td><td>索引参数</td><td>是的</td></tr><tr><td>参数</td><td>可迭代的 <em>参数</em> 或者花车</td><td>是的</td></tr></tbody></table>

## 示例

```
{
	“类型”：“indexedarrayparameter”，
	“index_parameter”：“水库控制曲线”，
	“参数”：[
		1,
		0.9，
		0.8，
		0.5
	]
}

```

上面的代码使用名为 “水库控制曲线” 的参数提供的索引，该参数是 [控制曲线索引参数。](https://water-strategy.gitbook.io/water-strategy/modelling-fundamentals/parameters/control-curve-index-parameter) 索引 0 返回 1，索引 2 返回 0.9 等...

在此示例中，此参数用于根据储层控制曲线减少需求。请前往 [聚合参数示例](https://water-strategy.gitbook.io/water-strategy/modelling-fundamentals/parameters/aggregated-parameter#example) 看看这是怎么做的。

请查看水库控制曲线参数是如何定义的。


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