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<p>Hi Kumiko,</p>
<p>Thank you for raising this issue.</p>
<p>We calculate two maps (occurrences of Archaea, and occurrences in Japan) and use them to produce this map (occurrences of Archaea in Japan). Unfortunately, due to the different way dense maps (Japan) and sparse maps (Archaea) are calculated, this comparison
is failing.</p>
<p>I have an issue for this here: <a class="moz-txt-link-freetext" href="https://github.com/gbif/maps/issues/29">
https://github.com/gbif/maps/issues/29</a></p>
<p>Until this is fixed, I suggest not filtering for only Japan, or else clipping the tiles to Japan client-side -- though I'm not sure if this can be done with MapBox. Using the ad-hoc API is another option, but that has different limitations (e.g. restriction
to WGS84 projection).</p>
<p>Best regards</p>
<p>Matthew Blissett</p>
<div class="moz-cite-prefix">On 06/03/2020 03:12, 戸津 久美子 wrote:<br>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US">I am using Maps API v2 with Mapbox GL JS to map occurrence data with two parameters; taxonKey and country. When I zoom in on the map, some points (hex in my case) dissappear and
appear. Could you think of any idea why this happens?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US">GBIF Maps API<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US"><a class="moz-txt-link-freetext" href="https://api.gbif.org/v2/map/occurrence/density/">https://api.gbif.org/v2/map/occurrence/density/</a>{z}/{x}/{<a class="moz-txt-link-abbreviated" href="mailto:y}@1x.png?style=classic.poly&bin=hex&hexPerTile=79&country=JP&taxonKey=2">y}@1x.png?style=classic.poly&bin=hex&hexPerTile=79&country=JP&taxonKey=2</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US">Base map<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US"><a class="moz-txt-link-freetext" href="https://tile.gbif.org/3857/omt/">https://tile.gbif.org/3857/omt/</a>{z}/{x}/{<a class="moz-txt-link-abbreviated" href="mailto:y}@1x.png?style=gbif-dark">y}@1x.png?style=gbif-dark</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US">Image of the map with different zoom levels and the source file<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US"><a class="moz-txt-link-freetext" href="https://nieseicmg-my.sharepoint.com/:f:/g/personal/totsu_kumiko_nies_go_jp/EkEo6i4qNv9Joebba7Q3RjwBSS1agzIHHcsnbkK-VQ-mFw?e=TPS1uG">https://nieseicmg-my.sharepoint.com/:f:/g/personal/totsu_kumiko_nies_go_jp/EkEo6i4qNv9Joebba7Q3RjwBSS1agzIHHcsnbkK-VQ-mFw?e=TPS1uG</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US">Kumiko<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US">--------------------------------------------------------<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US">Kumiko Totsu<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US">Center for Environmental Biology and Ecosystem Studies
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US">National Institute for Environmental Studies, Japan
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US"><a class="moz-txt-link-abbreviated" href="mailto:totsu.kumiko@nies.go.jp">totsu.kumiko@nies.go.jp</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif" lang="EN-US">--------------------------------------------------------<o:p></o:p></span></p>
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