[Mapserver-users] Tiling Tif Images
Stefan Schwarzer
stefan.schwarzer at grid.unep.ch
Thu Oct 9 07:40:10 EDT 2003
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Ed,
a) the images I have (100-500 MB) are not yet tiled; and I assume it would
result in a better performance if they would be.
b) the images form different layers; so each image should be tiled
separately. And yes: "Or are you trying to divide each of those files into
smaller rasters and then tile those back together?"
b) I did not succeed in finding the gdaltindex file, which seems to be
necessary to do the tiling of images.
Stefan
>Stefan
>
>
>
>You dont really say what the problem is, and you dont say what happened
>when you didnt succeed. For example, when you used gdaltindex, what
>result did you expect and what result did you get?
>
>
>
>First, do your several dozen raster images taken together form a tiled
>data set? Or are you trying to divide each of those files into smaller
>rasters and then tile those back together?
>
>
>
> - Ed
>
>
>
>Ed McNierney
>
>President and Chief Mapmaker
>
>TopoZone.com
>
>ed at topozone.com
>
>
>
>-----Original Message-----
>From: Stefan Schwarzer [mailto:stefan.schwarzer at grid.unep.ch]
>Sent: Thursday, October 09, 2003 7:11 AM
>To: mapserver-users at lists.gis.umn.edu
>Subject: [Mapserver-users] Tiling Tif Images
>
>
>
>Hi list,
>
>hmm, I think I read everything concerning the tiling of raster images by
>now. But the best hint I've found was the following URL (
>http://remotesensing.org/gdal/gdal_utilities.html ). I read as well this
>document ( http://mapserver.gis.umn.edu/doc/raster-howto.html ), but no
>solution in sight. I tried to find the gdaltindex (for windows), but did
>not succeed. I have the OpenEV installed, but this does not offer tiling.
>Fact is: I have several dozens of raster images which are mostly between
>100 and 500 MB. So, would you recommend to do some tiling with these
>sizes? If yes, what tool should I use?
>
>
>Can someone give be a tip?
>
>Thanks,
>
>Stefan
>
>
>
> _______________________________________
>
> Stefan Schwarzer
> Consultant on GEO
>
> UNEP/DEWA/GRID-Geneva
> Chemin des Anemones 11
> CH - 1219 Chatelaine
> Switzerland
>
> Tel: (+41) 22.917.83.49
> Fax: (+41) 22.917.80.29
>
> Email: stefan.schwarzer at grid.unep.ch
> Internet: http://geodata.grid.unep.ch/
> _______________________________________
_______________________________________
Stefan Schwarzer
Consultant on GEO
UNEP/DEWA/GRID-Geneva
Chemin des Anemones 11
CH - 1219 Chatelaine
Switzerland
Tel: (+41) 22.917.83.49
Fax: (+41) 22.917.80.29
Email: stefan.schwarzer at grid.unep.ch
Internet: http://geodata.grid.unep.ch/
_______________________________________
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<font size=3>Ed,<br><br>
a) the images I have (100-500 MB) are not yet tiled; and I assume it
would result in a better performance if they would be.<br>
b) the images form different layers; so each image should be tiled
separately. And yes:
"</font><font face="arial" size=2 color="#000080">Or are you trying
to divide each of those files into smaller rasters and then tile those
back together?"<br>
</font><font size=3>b) I did not succeed in finding the gdaltindex file,
which seems to be necessary to do the tiling of images.<br><br>
Stefan<br><br>
<br>
</font><blockquote type=cite class=cite cite><font face="arial" size=2 color="#000080">Stefan
<br>
</font><font size=3><br>
</font><font face="arial" size=2 color="#000080"> <br>
</font><font size=3><br>
</font><font face="arial" size=2 color="#000080">You dont really say what
the problem is, and you dont say what happened when you didnt
succeed. For example, when you used gdaltindex, what result did you
expect and what result did you get?<br>
</font><font size=3><br>
</font><font face="arial" size=2 color="#000080"> <br>
</font><font size=3><br>
</font><font face="arial" size=2 color="#000080">First, do your several
dozen raster images taken together form a tiled data set? Or are
you trying to divide each of those files into smaller rasters and then
tile those back together?<br>
</font><font size=3><br>
</font><font face="arial" size=2 color="#000080"> <br>
</font><font size=3><br>
</font><font face="arial" size=2 color="#000080">
- Ed<br>
</font><font size=3><br>
</font><font face="Courier New, Courier" size=2 color="#000080"> <br>
</font><font size=3><br>
</font><font face="Courier New, Courier" size=2 color="#000080">Ed
McNierney<br>
</font><font size=3><br>
</font><font face="Courier New, Courier" size=2 color="#000080">President
and Chief Mapmaker<br>
</font><font size=3><br>
</font><font face="Courier New, Courier" size=2 color="#000080">TopoZone.com<br>
</font><font size=3><br>
</font><font face="Courier New, Courier" size=2 color="#000080">ed at topozone.com<br>
</font><font size=3><br>
</font><font face="arial" size=2 color="#000080"> <br>
</font><font size=3><br>
</font><font face="tahoma" size=2>-----Original Message-----<br>
<b>From:</b> Stefan Schwarzer
[<a href="mailto:stefan.schwarzer at grid.unep.ch" eudora="autourl">mailto:stefan.schwarzer at grid.unep.ch</a>]
<br>
<b>Sent:</b> Thursday, October 09, 2003 7:11 AM<br>
<b>To:</b> mapserver-users at lists.gis.umn.edu<br>
<b>Subject:</b> [Mapserver-users] Tiling Tif Images<br>
</font><font size=3><br>
</font><font face="Times New Roman, Times" size=3> <br>
</font><br>
<font face="Times New Roman, Times" size=3>Hi list,<br><br>
hmm, I think I read everything concerning the tiling of raster images by
now. But the best hint I've found was the following URL (
<a href="http://remotesensing.org/gdal/gdal_utilities.html" eudora="autourl">http://remotesensing.org/gdal/gdal_utilities.html</a>
). I read as well this document ( <a href="http://mapserver.gis.umn.edu/doc/raster-howto.html" eudora="autourl">http://mapserver.gis.umn.edu/doc/raster-howto.html</a> ), but no solution in sight. I tried to find the gdaltindex (for windows), but did not succeed. I have the OpenEV installed, but this does not offer tiling.<x-tab> </x-tab><br>
Fact is: I have several dozens of raster images which are mostly between 100 and 500 MB. So, would you recommend to do some tiling with these sizes? If yes, what tool should I use?<br><br>
<br>
Can someone give be a tip?<br><br>
Thanks,<br><br>
Stefan<br><br>
<br><br>
<x-tab> </x-tab> _______________________________________<br><br>
</font><font size=2><x-tab> </x-tab> <b>Stefan Schwarzer<br>
</b><x-tab> </x-tab>Consultant on GEO<br><br>
<x-tab> </x-tab>UNEP/DEWA/GRID-Geneva<br>
<x-tab> </x-tab>Chemin des Anemones 11<br>
<x-tab> </x-tab>CH - 1219 Chatelaine<br>
<x-tab> </x-tab>Switzerland<br><br>
<x-tab> </x-tab>Tel: (+41) 22.917.83.49<br>
<x-tab> </x-tab>Fax: (+41) 22.917.80.29<br><br>
<x-tab> </x-tab>Email: stefan.schwarzer at grid.unep.ch<br>
<x-tab> </x-tab>Internet: <a href="http://geodata.grid.unep.ch/" eudora="autourl">http://geodata.grid.unep.ch/</a><br>
</font><font size=3><x-tab> </x-tab>_______________________________________</blockquote>
<x-sigsep><p></x-sigsep>
<x-tab> </x-tab>_______________________________________<br><br>
</font><font size=2><x-tab> </x-tab><b>Stefan Schwarzer<br>
</b><x-tab> </x-tab>Consultant on GEO<br><br>
<x-tab> </x-tab>UNEP/DEWA/GRID-Geneva<br>
<x-tab> </x-tab>Chemin des Anemones 11<br>
<x-tab> </x-tab>CH - 1219 Chatelaine<br>
<x-tab> </x-tab>Switzerland<br><br>
<x-tab> </x-tab>Tel: (+41) 22.917.83.49<br>
<x-tab> </x-tab>Fax: (+41) 22.917.80.29<br><br>
<x-tab> </x-tab>Email: stefan.schwarzer at grid.unep.ch<br>
<x-tab> </x-tab>Internet: <a href="http://geodata.grid.unep.ch/" eudora="autourl">http://geodata.grid.unep.ch/</a><br>
</font><font size=3><x-tab> </x-tab>_______________________________________</font></body>
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