Time ordering of Coverages in a Collection
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- 难度
- 5/5
- 预计耗时
- 一周以上
- 新手友好度
- 25/100
- Issue 类型
- 功能
- 描述清晰度
- 需要澄清
- 活跃度
- 停滞
- 技术栈
- json
- 领域
- data
调研方向
首先阅读链接的 data_access_api issue #12、集合级时间域提案以及所引用的 CoverageJSON 规范章节。确定集合时间戳的排序和 coverage 的顺序应属于 schema 还是 #161 profile,然后记录已达成一致的行为和完成标准。
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描述
In the particle tracking use case and drift models, the usual outcome is set of:
- trajectories - from drift models they are identifiable along the time, something like NCEI Multiple mooring lines with stationary instruments at different depths across the mooring lines and the instruments measuring at different points in time. but without 'z' in dim.
- series of snapshots, each snapshot is a MultiPoint, each point has properties - good for raw observations, particles are not identifiable at source, also preference for visualization as it allows for present frame by frame.
Here is the covjson schema compliant second representation as CoverageCollection of MultiPoint, each Multipoint at different time:
https://github.com/ILIAD-ocean-twin/data_access_api/issues/12
Traversing through all the Coverages/frames to know what are the timestamps and to order them does not feel like elegant.
So example has additional time domain (not breaking the schema nor mentioned in spec as MAY for CoverageCollection) on the collection level where all the timestamps are listed and sorted. It is redundant to timestamps in the Coverages while allowing to construct timescale, potentiallyy faster (all timestamps in one block, no need to traverse all the Coverages, esp they does not have to be in order).
Is that a good case to say what is the domain of the coverage collection if exists?
Is it a good candidate for #161 type profile?
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opengeospatial/CoverageJSON 的其他 Issue
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难度 2/5 1-3 小时 新手友好度 45/100
opengeospatial/CoverageJSON#233 ·
-
Implementations
难度 5/5 一周以上 新手友好度 25/100
opengeospatial/CoverageJSON#229 · 3 条评论 ·
-
难度 5/5 一周以上 新手友好度 25/100
opengeospatial/CoverageJSON#227 · 3 条评论 · 1 个 reaction ·
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enhancement
难度 5/5 一周以上 新手友好度 30/100
opengeospatial/CoverageJSON#218 · 4 条评论 ·
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V1.1
难度 5/5 一周以上 新手友好度 35/100
opengeospatial/CoverageJSON#216 · 9 条评论 · 3 个 reaction ·
查看 opengeospatial/CoverageJSON 的全部 Issue
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