Re: Mapcache - Is it possible to have two tilesets share a single cache at particular zoom levels?

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That seems more like a client configuration issue to me. That is, you'd
have the two caches (air photos and political) but then configure the
client to swap at different zoom levels. For example, with Leaflet you
could simply set maxZoom/minZoom map attributes. Here's an example that
uses a map (1 tileset) at small scales and then transitions to aerial
photos w/overlays (2 tilesets) as the user zooms in:

   http://maps1.dnr.state.mn.us/test/tiles/switch.html

Presumably you can tell MapCache to only generate tiles over certain zoom
ranges for each tileset - thus reducing disk space. Perhaps I'm miss
interpreting your question though. --Steve

On Wed, Oct 23, 2019 at 9:29 AM Mark Volz <[email protected]> wrote:

> Hello,
>
>
>
> I have two similar tilesets configured in Mapcache.  One of the tilesets
> displays a political map at small scales, then changes to an air photo ma=
p
> as the user zooms into the map.  The second tileset displays air photos a=
t
> every zoom level.  It would be useful if these tilesets could share a
> single cache for zoom levels 5-11.  This way we could save a significant
> amount of space on the server.
>
>
>
> Example #1:
>
> Political and Air Photo Basemap:
>
> =C2=B7         Zoom level 0-4:  Use the cache from the =E2=80=9Cpolitical=
 map cache=E2=80=9D
>
> =C2=B7         Zoom level 5-11: Use the cache from the =E2=80=9Cair photo=
 cache=E2=80=9D
>
> Air Photo Basemap
>
> =C2=B7         Zoom level 0-11:  Use the cache from the =E2=80=9Cair phot=
o cache=E2=80=9D
>
> Result:
>
> =C2=B7         Any tiles at level 5-11, which will take up the majority o=
f the
> space on the sever will not need to be duplicated between the two tileset=
s.
>
>
>
> Please let me know if it is possible to share caches between different
> tilesets.
>
>
>
> Thanks!
>
>
>
> Sincerely,
>
> *Mark Volz, GISP*
>
> *Lyon County GIS Coordinator*
>
>
> _______________________________________________
> mapserver-users mailing list
> [email protected]
> https://lists.osgeo.org/mailman/listinfo/mapserver-users

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<div dir=3D"ltr">That seems more like a client configuration issue to me. T=
hat is, you&#39;d have the two caches (air photos and political) but then c=
onfigure the client to swap at different zoom levels. For example, with Lea=
flet you could simply set maxZoom/minZoom map attributes. Here&#39;s an exa=
mple that uses a map (1 tileset) at small scales and then transitions to ae=
rial photos w/overlays (2 tilesets) as the user zooms in:<div><br></div><di=
v>=C2=A0=C2=A0

<a href=3D"http://maps1.dnr.state.mn.us/test/tiles/switch.html">http://maps=
1.dnr.state.mn.us/test/tiles/switch.html</a>=C2=A0=C2=A0<div><br></div><div=
>Presumably you can tell MapCache to only generate tiles over certain zoom =
ranges for each tileset - thus reducing disk space. Perhaps I&#39;m miss in=
terpreting=C2=A0your question though. --Steve</div></div></div><br><div cla=
ss=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Oct 23, 20=
19 at 9:29 AM Mark Volz &lt;<a href=3D"mailto:[email protected]">MarkV=
[email protected]</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote"=
 style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);p=
adding-left:1ex">





<div lang=3D"EN-US">
<div class=3D"gmail-m_8097837459471667281WordSection1">
<p class=3D"MsoNormal">Hello,<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">I have two similar tilesets configured in Mapcache.=
=C2=A0 One of the tilesets displays a political map at small scales, then c=
hanges to an air photo map as the user zooms into the map.=C2=A0 The second=
 tileset displays air photos at every zoom level.=C2=A0
 It would be useful if these tilesets could share a single cache for zoom l=
evels 5-11.=C2=A0 This way we could save a significant amount of space on t=
he server.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Example #1:<u></u><u></u></p>
<p class=3D"MsoNormal">Political and Air Photo Basemap:<u></u><u></u></p>
<p class=3D"gmail-m_8097837459471667281MsoListParagraph"><u></u><span style=
=3D"font-family:Symbol"><span>=C2=B7<span style=3D"font:7pt &quot;Times New=
 Roman&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
</span></span></span><u></u>Zoom level 0-4:=C2=A0 Use the cache from the =
=E2=80=9Cpolitical map cache=E2=80=9D<u></u><u></u></p>
<p class=3D"gmail-m_8097837459471667281MsoListParagraph"><u></u><span style=
=3D"font-family:Symbol"><span>=C2=B7<span style=3D"font:7pt &quot;Times New=
 Roman&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
</span></span></span><u></u>Zoom level 5-11: Use the cache from the =E2=80=
=9Cair photo cache=E2=80=9D<u></u><u></u></p>
<p class=3D"MsoNormal">Air Photo Basemap<u></u><u></u></p>
<p class=3D"gmail-m_8097837459471667281MsoListParagraph"><u></u><span style=
=3D"font-family:Symbol"><span>=C2=B7<span style=3D"font:7pt &quot;Times New=
 Roman&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
</span></span></span><u></u>Zoom level 0-11:=C2=A0 Use the cache from the =
=E2=80=9Cair photo cache=E2=80=9D<u></u><u></u></p>
<p class=3D"MsoNormal">Result:<u></u><u></u></p>
<p class=3D"gmail-m_8097837459471667281MsoListParagraph"><u></u><span style=
=3D"font-family:Symbol"><span>=C2=B7<span style=3D"font:7pt &quot;Times New=
 Roman&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
</span></span></span><u></u>Any tiles at level 5-11, which will take up the=
 majority of the space on the sever will not need to be duplicated between =
the two tilesets.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Please let me know if it is possible to share caches=
 between different tilesets.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Thanks!<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)">Sincerely,<u></=
u><u></u></span></p>
<p class=3D"MsoNormal"><b><span style=3D"color:rgb(31,73,125)">Mark Volz, G=
ISP</span></b><b><span style=3D"font-size:12pt;color:rgb(31,73,125)"><u></u=
><u></u></span></b></p>
<p class=3D"MsoNormal"><b><span style=3D"color:rgb(31,73,125)">Lyon County =
GIS Coordinator<u></u><u></u></span></b></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>

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[email protected]</a><br>
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"noreferrer" target=3D"_blank">https://lists.osgeo.org/mailman/listinfo/map=
server-users</a></blockquote></div>

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