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https://issues.apache.org/jira/browse/CALCITE-4294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17599713#comment-17599713
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Bertil Chapuis edited comment on CALCITE-4294 at 9/2/22 9:05 PM:
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Ok, my future plan is to use calcite in baremaps to produce vector tiles. 
Having JTS was a first step, but I'm interested in contributing additional 
functions. Should I create one issue per function? Some of them may be quite 
significant (e.g. ST_AsMVT, ST_AsMVTGeom, ST_TileEnvelope).

[https://github.com/baremaps/baremaps]

[https://demo.baremaps.com/]

 


was (Author: bchapuis):
Ok, my future plan is to use calcite in baremaps to produce vector tiles. 
Having JTS was a first step, but I'm interested in contributing additional 
functions. Should I create one issue per function? Some of them may be quite 
significant (e.g. ST_AsMVT, ST_AsMVTGeom, ST_TileEnvelope). 

[https://github.com/baremaps/baremaps|https://github.com/baremaps/baremaps)]

[https://demo.baremaps.com/|https://demo.baremaps.com/)]

> Use JTS rather than ESRI as the underlying library for geospatial (ST_) 
> functions
> ---------------------------------------------------------------------------------
>
>                 Key: CALCITE-4294
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4294
>             Project: Calcite
>          Issue Type: Bug
>          Components: spatial
>            Reporter: Julian Hyde
>            Assignee: Bertil Chapuis
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.32.0
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> The geospatial functions are currently implemented using the ESRI library. We 
> should consider using JTS instead. AT the time we started work on geospatial 
> the JTS did not have a suitable license, but this is no longer the case. I 
> gather that JTS is a superior library.



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