Re: How to identify a raster on the map?

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> FYI,
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> http://blog.qgis.org/?q=node/104
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> A
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> +----------------------------------------+
>   Aaron Racicot - GIS Programmer
>   aaronr@...
>  +----------------------------------------+
>   z - p u l l e y
>   pobox 1614
>   langley wa 98260
>   www.reprojected.com
>  +----------------------------------------+
>
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>  ________________________________
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> From: qgis-user-bounces@...
> [mailto:qgis-user-bounces@...] On Behalf Of
> andrea pacifici
>  Sent: Friday, January 11, 2008 4:36 AM
>  To: Richard Duivenvoorde
>  Cc: qgis-user@...
>  Subject: Re: [Qgis-user] How to identify a raster on the map?
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> Hi Richard,
>
>  I'm using Qgis in order to realise a geological map: images will be not
> distribuited via mapserver. So I actually have more than 200 layers.
>
>  To create a python  plugin for that could be very interesting. But I don't
> know python language....
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>  Anyway, I think that the possibility to have a Qgis plugin doing this could
> be fundamental for those people working with a very large number of raster
> data (this is the case of people like me working on planetary geology)
>
>  Thank you very much
>
>  Andrea
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> 2008/1/11, Richard Duivenvoorde < rdmailings@...>:
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> Hi Andrea,
>
>  how did you load these rasters?
>  Every raster in a layer (so you have actually 200 layers)?
>  Or did you generate a tileindex file using gdaltindex and are you
>  serving the rasterimages using mapserver?
>
>  If the first: it's fun to write a simple python plugin for that, if
>  needed I can give you some help (thinking about: get mouseXY, walk
>  through all layers and check if you are within the bbox of current
>  layer, spit the layername or some other attribute name to std-out (or
>  more fancy: show a dialog).)
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>  If the second: as Tim told you: add the indexfile as layer. You can also
>  use that indexfile to serve the rasters via Mapserver then.
>
>  Building the indexfile and just loading that in Qgis is probably the
>  fastest way.
>
>  Grtz Richard Duivenvoorde
>
>  andrea pacifici wrote:
>  > Hi,
>  > I have a Qgis-GRASS GIS project containing more than 200 rasters: it is
>  > a GIS project about a portion of Mars (yes... the planet!).
>  > Often, I need to identify the name of one of such rasters just by
>  > clicking on it on the map.
>  > Which is the best way to do this with Qgis? The "Identify" button give
>  > information on a raster only if the raster it is already selected.
>  > There is a plugin to do this?
>  >
>  > Otherwise, I think the only way is to build a vector layer representing
>  > raster footprints, and interrogate it.
>  >
>  > Thanks
>  >
>  > Andrea
>  >
>  > --
>  > _____________________________
>  >
>  > Dott. Geol. Andrea Pacifici, Ph.D.
>  > Via della Billona 1093,
>  > 55100 Lucca, Italy
>  > Cell. +39328-09918108
>  > E-Mail pacifici@... <mailto:pacifici@...>
>  >
>  >
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>  --
>  _____________________________
>
>  Dott. Geol. Andrea Pacifici, Ph.D.
>  Via della Billona 1093,
>  55100 Lucca
>  Cell. 328-09918108
>  E-Mail pacifici@...
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