Re: [FreeGeoCZ] velké bodové datasety na webu (TWK B, PBF)

--===============2025373920==
Content-Type: multipart/alternative; boundary="f403045ffd1ebfd4430553630e9e"

--f403045ffd1ebfd4430553630e9e
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

Hm a co spatiallite, nebo geopackage?
Mmchdm, u bodovejch dat bys ud=C4=9Blal celkem dost "par=C3=A1dy" i s oby=
=C4=8Dejnskym
c=C3=A9esv=C3=A9=C4=8Dkem.

Je;

Dne 30. =C4=8Dervna 2017 17:00 Ha Noj <[email protected]> napsal(a):

> Ahoj,
>
> cht=C4=9Bl bych publikovat na webu v n=C4=9B=C4=8Dem jako Openlayers bez =
u=C5=BEit=C3=AD serveru
> dataset o 100.000 bodech, optim=C3=A1ln=C4=9B i s n=C4=9Bjak=C3=BDmi atri=
buty, ale lze to
> ud=C4=9Blat i bez atribut=C5=AF.
> M=C3=A1te n=C4=9Bjakou praktickou zku=C5=A1enost?
>
> 1) GeoJSON 32 MB/zip 3 MB/RAM 390 MB (zip za p=C5=99edpokladu, =C5=BEe we=
b server se
> s klientem dohodnou na sta=C5=BEen=C3=AD v Gzip - zd=C3=A1 se mi, =C5=BEe=
 tomu tak nen=C3=AD v=C5=BEdy),
> pokud odstran=C3=ADm v=C5=A1echny atributy tak 11 MB/zip 0,7 MB/ RAM 350 =
MB.
> *** klasika, ale velk=C3=BD a pomal=C3=BD...
>
> 2) TopoJSON 26 MB/zip 3 MB
> *** pro body to nem=C3=A1 moc v=C3=BDznam
>
> 3) TWKB [1]
> *** zaj=C3=ADmav=C3=BD! RAM 9 MB na 100.000 bod=C5=AF, ale nepochopil jak=
 se vytv=C3=A1=C5=99=C3=AD
> soubory twkb? Z=C3=ADskat samotnou geometrii je v psql jednoduch=C3=A9, j=
ak ale
> vytvo=C5=99it korektn=C3=AD bin=C3=A1rn=C3=AD soubor?
> psql -c "SELECT ST_AsTWKB('POINT(16 49)'::geometry);"
>
> 4) Geobuf PBF [2]
> *** op=C4=9Bt zaj=C3=ADmav=C3=BD, ale =C5=BE=C3=A1dn=C3=BDm z n=C3=A1stro=
j=C5=AF se mi nepoda=C5=99ilo vytvo=C5=99it
> pot=C5=99ebn=C3=BD PBF soubor, v=C5=BEdy to kon=C4=8D=C3=AD p=C3=A1dem p=
=C5=99ev=C3=A1d=C4=9Bc=C3=ADho n=C3=A1stroje [3].
>
> 5) N=C4=9Bco jin=C3=A9ho jinak? =C3=9Apln=C4=9B jinak?
>
> zdrav=C3=AD
>  Dan B=C3=A1rta
>
> [1] https://dev.camptocamp.com/files/ol3/webgl/examples/webgl-points.html
> [2] https://github.com/mapbox/geobuf#install
> [3] https://stackoverflow.com/questions/35393903/geojson-encodin
> g-for-using-in-leaflet-js
>
>
> _______________________________________________
> FreeGeoCZ mailing list
> [email protected]
> http://mailman.fsv.cvut.cz/mailman/listinfo/freegeocz
>
>


--=20
Jelen
Star=C5=A1=C3=AD =C4=8Deled=C3=ADn datov=C3=BDho chl=C3=ADva

--f403045ffd1ebfd4430553630e9e
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div><div>Hm a co spatiallite, nebo geopackage?<br></div>M=
mchdm, u bodovejch dat bys ud=C4=9Blal celkem dost &quot;par=C3=A1dy&quot; =
i s oby=C4=8Dejnskym c=C3=A9esv=C3=A9=C4=8Dkem.<br><br></div>Je;<br></div><=
div class=3D"gmail_extra"><br><div class=3D"gmail_quote">Dne 30. =C4=8Dervn=
a 2017 17:00 Ha Noj <span dir=3D"ltr">&lt;<a href=3D"mailto:[email protected]=
m" target=3D"_blank">[email protected]</a>&gt;</span> napsal(a):<br><blockqu=
ote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc s=
olid;padding-left:1ex"><div dir=3D"ltr"><div><div><div><div><div>Ahoj,<br><=
/div><br>cht=C4=9Bl bych publikovat na webu v n=C4=9B=C4=8Dem jako Openlaye=
rs bez u=C5=BEit=C3=AD serveru dataset o 100.000 bodech, optim=C3=A1ln=C4=
=9B i s n=C4=9Bjak=C3=BDmi atributy, ale lze to ud=C4=9Blat i bez atribut=
=C5=AF.<br></div><div>M=C3=A1te n=C4=9Bjakou praktickou zku=C5=A1enost?<br>=
</div><div><br></div>1) GeoJSON 32 MB/zip 3 MB/RAM 390 MB (zip za p=C5=99ed=
pokladu, =C5=BEe web server se s klientem dohodnou na sta=C5=BEen=C3=AD v G=
zip - zd=C3=A1 se mi, =C5=BEe tomu tak nen=C3=AD v=C5=BEdy), pokud odstran=
=C3=ADm v=C5=A1echny atributy tak 11 MB/zip 0,7 MB/ RAM 350 MB.<br></div><d=
iv>*** klasika, ale velk=C3=BD a pomal=C3=BD...<br></div><div><br></div>2) =
TopoJSON 26 MB/zip 3 MB<br></div><div>*** pro body to nem=C3=A1 moc v=C3=BD=
znam<br></div><div><br></div>3) TWKB [1]<br></div><div>*** zaj=C3=ADmav=C3=
=BD! RAM 9 MB na 100.000 bod=C5=AF, ale nepochopil jak se vytv=C3=A1=C5=99=
=C3=AD soubory twkb? Z=C3=ADskat samotnou geometrii je v psql jednoduch=C3=
=A9, jak ale vytvo=C5=99it korektn=C3=AD bin=C3=A1rn=C3=AD soubor?<br></div=
><div>psql -c &quot;SELECT ST_AsTWKB(&#39;POINT(16 49)&#39;::geometry);&quo=
t; <span class=3D"m_6284490234821136448m_2432755989386533772gmail-"><br><br=
></span></div>4) Geobuf PBF [2]<br><div>*** op=C4=9Bt zaj=C3=ADmav=C3=BD, a=
le =C5=BE=C3=A1dn=C3=BDm z n=C3=A1stroj=C5=AF se mi nepoda=C5=99ilo vytvo=
=C5=99it pot=C5=99ebn=C3=BD PBF soubor, v=C5=BEdy to kon=C4=8D=C3=AD p=C3=
=A1dem p=C5=99ev=C3=A1d=C4=9Bc=C3=ADho n=C3=A1stroje [3].<br><br></div><div=
>5) N=C4=9Bco jin=C3=A9ho jinak? =C3=9Apln=C4=9B jinak?<br></div><div><br>z=
drav=C3=AD<br>=C2=A0Dan B=C3=A1rta<br><br>[1] <a href=3D"https://dev.campto=
camp.com/files/ol3/webgl/examples/webgl-points.html" target=3D"_blank">http=
s://dev.camptocamp.com/fil<wbr>es/ol3/webgl/examples/webgl-<wbr>points.html=
</a><br>[2] <a href=3D"https://github.com/mapbox/geobuf#install" target=3D"=
_blank">https://github.com/mapbox/geob<wbr>uf#install</a><br>[3] <a href=3D=
"https://stackoverflow.com/questions/35393903/geojson-encoding-for-using-in=
-leaflet-js" target=3D"_blank">https://stackoverflow.com/ques<wbr>tions/353=
93903/geojson-encodin<wbr>g-for-using-in-leaflet-js</a><br><br></div></div>
<br>______________________________<wbr>_________________<br>
FreeGeoCZ mailing list<br>
<a href=3D"mailto:[email protected]">[email protected]</a><br>
<a href=3D"http://mailman.fsv.cvut.cz/mailman/listinfo/freegeocz" rel=3D"no=
referrer" target=3D"_blank">http://mailman.fsv.cvut.cz/<wbr>mailman/listinf=
o/freegeocz</a><br>
<br></blockquote></div><br><br clear=3D"all"><br>-- <br><div class=3D"gmail=
_signature" data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div>Jelen<=
br></div>Star=C5=A1=C3=AD =C4=8Deled=C3=ADn datov=C3=BDho chl=C3=ADva<br></=
div></div>
</div>

--f403045ffd1ebfd4430553630e9e--

--===============2025373920==
Content-Type: text/plain; charset="iso-8859-2"
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable
Content-Disposition: inline

_______________________________________________
FreeGeoCZ mailing list
[email protected]
http://mailman.fsv.cvut.cz/mailman/listinfo/freegeocz

--===============2025373920==--