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https://issues.apache.org/jira/browse/SDAP-50?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16607547#comment-16607547
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Joseph Jacob commented on SDAP-50:
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In addition to the incorrect values due to no combining the results across
tiles as mentioned in the original issue description, the fix to this will also
correct two other additional problems: (1) The JSON response can get multiple
blocks of results for the same time stamp, but each time stamp should only
appear once; (2) Averaging over latitude requires weighting by cos(latitude) as
in the Giovanni implementation (this only affects longitude-time Hovmoller
maps).
> Fix incorrect Hovmoller Implementation
> --------------------------------------
>
> Key: SDAP-50
> URL: https://issues.apache.org/jira/browse/SDAP-50
> Project: Apache Science Data Analytics Platform
> Issue Type: Bug
> Components: nexus
> Reporter: Frank Greguska
> Assignee: Joseph Jacob
> Priority: Major
> Fix For: 0.1
>
>
> Currently the Hovmoller calculation is averaging latitudes or longitudes
> within individual tiles. However, depending on the search domain, unique
> lats/lons can be in multiple tiles.
> The algorithm needs to be updated to average all unique (time, lat) or (time,
> lon) values regardless of tiles.
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