| id | 层级视图项标识符。 |
| sampleIndex | 合并样本索引。 |
| metadataIndex | 元数据索引。 |
float Returns value of the metadata as float.
返回层级视图项元数据值的浮点值表示形式。
Throws:
System.ArgumentException if id is invalid.
System.IndexOutOfRangeException if sampleIndex is not in the range from 0 to GetItemMergedSamplesCount.
System.IndexOutOfRangeException if medataIndex is not in the range from 0 to GetItemMergedSamplesMetadataCount.
See Also: GetItemMergedSamplesCount, GetItemMergedSamplesMetadataCount, GetItemMetadataAsFloat.