[Qgis-user] Re: Qgis-user Digest, Vol 37, Issue 47
Mauricio de Paulo
mauricio.dev at gmail.com
Sat Mar 28 13:57:17 PDT 2009
I've written a RGB composition plugin using virtual raster and gdal.
Should I rewrite it to 1.0?
On Sat, 2009-03-28 at 16:17 -0400, qgis-user-request at lists.osgeo.org
wrote:
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> Today's Topics:
>
> 1. Re: Feature requests (Nikos Alexandris)
> 2. Python does not seem to be working on my Mac (Will Muir)
> 3. Re: [Qgis-developer] Feature requests (Barry Rowlingson)
> 4. Re: Re: [Qgis-developer] Feature requests (Maxim Dubinin)
> 5. Re: [Qgis-developer] Feature requests (Agustin Lobo)
> 6. Re: on-the-fly reprojection of raster maps (Jachym Cepicky)
> 7. Re: Python does not seem to be working on my Mac (Sebastian Cruz)
> 8. Re: Python does not seem to be working on my Mac
> (Giovanni Manghi)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 28 Mar 2009 18:39:31 +0100
> From: Nikos Alexandris <nikos.alexandris at felis.uni-freiburg.de>
> Subject: Re: [Qgis-user] Feature requests
> To: Agustin Lobo <alobolistas at gmail.com>
> Cc: qgis-user <qgis-user at lists.osgeo.org>, qgis-developer
> <qgis-developer at lists.osgeo.org>
> Message-ID: <1238261971.6195.29.camel at vertical>
> Content-Type: text/plain
>
> Agustin:
> > I've added the following items to my wishlist
> > (http://sites.google.com/site/eospansite/myqgiswishlist)
>
> > I wait for feed-back before adding them as tickets:
> > 24. When opening a layer, add it to the position below the layer
> > selected in the legend (not always to the top)
> > 25. When creating a group in the legend, add it to the position below
> > the selected layer (not always to the bottom)
> > 26. RGB color composite from individual files.
> > 27. RGB color composite from layers within a group in the legend
> > 28. Color (or grey) key for vector and single-band raster layers
> > 29. Attribute table and tips for single-band raster layers (i.e., for
> > land-cover raster layers)
>
> Agus and all, I want to add one more wish:
>
> * Ability to clone/duplicate an already opened layer by right click on a
> layer. This is, in my humble opinion, more convenient to make quick
> changes on the appearance (i.e. of a vector) and have different "looks"
> of the same map than adding a layer again and re-applying whatever
> symbology properties the user wants to.
>
> Kind regards, Nikos
> ---
>
> P.S. @Agus: since you have all these wishes in one place, you could add
> the above as well, given of course that you see it as a required
> feature.
>
>
>
> ------------------------------
>
> Message: 2
> Date: Sat, 28 Mar 2009 12:28:50 -0600
> From: Will Muir <will at mtintouch.net>
> Subject: [Qgis-user] Python does not seem to be working on my Mac
> To: Qgis-user at lists.osgeo.org
> Message-ID: <83F2D814-F24F-40D2-9AD8-5E540D5F2960 at mtintouch.net>
> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed
>
> Hello using Qgis version 1.0.0 does not seem to include python
> support. Was it built with python support? I am using the all
> included package, if that makes any difference. Starting it from the
> command line it does not print any python related errors.
>
> Thanks for any advice,
>
> Will
>
>
> ------------------------------
>
> Message: 3
> Date: Sat, 28 Mar 2009 18:40:48 +0000
> From: Barry Rowlingson <b.rowlingson at lancaster.ac.uk>
> Subject: [Qgis-user] Re: [Qgis-developer] Feature requests
> To: Agustin Lobo <alobolistas at gmail.com>
> Cc: qgis-user <qgis-user at lists.osgeo.org>, qgis-developer
> <qgis-developer at lists.osgeo.org>
> Message-ID:
> <d8ad40b50903281140l1fb82700v9bc3db0b5a0d0c95 at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> 2009/3/28 Agustin Lobo <alobolistas at gmail.com>:
> > I've added the following items to my wishlist
> > (http://sites.google.com/site/eospansite/myqgiswishlist)
> > I wait for feed-back before adding them as tickets:
> >
> > 24. When opening a layer, add it to the position below the layer
> > selected in the legend (not always to the top)
>
> -1 - when I add a layer I want to be able to see it, and if it's not
> at the top I might not!
>
> > 25. When creating a group in the legend, add it to the position below
> > the selected layer (not always to the bottom)
>
> -1 - but unlike the current behaviour I'd like new groups to start at
> the top (so that things added to them are visible!)
>
> Another idea would be to have an 'add layer here' option on the
> context menu of the layer legend. Currently adding a new layer to a
> group is a two-step thing - load the layer, then drag into the group.
> This could be done in one with a 'add layer here' option. Obviously it
> would then have to ask if you want a raster layer, vector layer,
> postgis layer, wms layer etc etc...
>
> > 26. RGB color composite from individual files.
> > 27. RGB color composite from layers within a group in the legend
>
> Not sure I understand these two - you want to take three individual
> rasters and create an RGB image raster from them?
>
> > 28. Color (or grey) key for vector and single-band raster layers
>
> On the Print Composer? Or in the layer legend?
>
> > 29. Attribute table and tips for single-band raster layers (i.e., for
> > land-cover raster layers)
>
> Are you talking about categorical rasters here? Where 1=water,
> 2=agriculture, 3=urban for example? What file formats support
> alphanumeric labels for categories? Or would the user have to enter
> them in Qgis themselves?
>
> Barry
>
>
> ------------------------------
>
> Message: 4
> Date: Sat, 28 Mar 2009 13:57:41 -0500
> From: Maxim Dubinin <sim at gis-lab.info>
> Subject: Re: [Qgis-user] Re: [Qgis-developer] Feature requests
> To: Barry Rowlingson <b.rowlingson at lancaster.ac.uk>
> Cc: qgis-user <qgis-user at lists.osgeo.org>, qgis-developer
> <qgis-developer at lists.osgeo.org>
> Message-ID: <758956927.20090328135741 at gis-lab.info>
> Content-Type: text/plain; charset=iso-8859-1
>
>
> >> 24. When opening a layer, add it to the position below the layer
> >> selected in the legend (not always to the top)
>
> BR> -1 - when I add a layer I want to be able to see it, and if it's not
> BR> at the top I might not!
>
> When this is happening in ArcGIS, polygonal layers are being added to the
> bottom of the list, then lines, then points at the top. This is smart,
> especially when you load 10+ layers at once. Last layer is then
> selected, so you won't miss where it is now.
>
> Maxim
>
>
>
> ------------------------------
>
> Message: 5
> Date: Sat, 28 Mar 2009 21:00:46 +0100
> From: Agustin Lobo <alobolistas at gmail.com>
> Subject: [Qgis-user] Re: [Qgis-developer] Feature requests
> To: Barry Rowlingson <b.rowlingson at lancaster.ac.uk>
> Cc: qgis-user <qgis-user at lists.osgeo.org>, qgis-developer
> <qgis-developer at lists.osgeo.org>
> Message-ID: <49CE81EE.5080401 at gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Barry Rowlingson wrote:
> > 2009/3/28 Agustin Lobo <alobolistas at gmail.com>:
> >
> >> I've added the following items to my wishlist
> >> (http://sites.google.com/site/eospansite/myqgiswishlist)
> >> I wait for feed-back before adding them as tickets:
> >>
> >> 24. When opening a layer, add it to the position below the layer
> >> selected in the legend (not always to the top)
> >>
> >
> > -1 - when I add a layer I want to be able to see it, and if it's not
> > at the top I might not!
> >
> >
> >> 25. When creating a group in the legend, add it to the position below
> >> the selected layer (not always to the bottom)
> >>
> >
> > -1 - but unlike the current behaviour I'd like new groups to start at
> > the top (so that things added to them are visible!)
> >
> >
> Don't understand your -1, at most should be a 0: these features would
> not prevent you or anybody else
> to get the new layer opened at the top (just have the first layer
> selected ),
> or the group created at the bottom (just have the last layer selected),
> which is the
> current behavior. Instead you would let other users organize their set
> of layers (which often is long)
> in a different way. Don't see any reason to impose any particular
> preference.
>
> > Another idea would be to have an 'add layer here' option on the
> > context menu of the layer legend. Currently adding a new layer to a
> > group is a two-step thing - load the layer, then drag into the group.
> > This could be done in one with a 'add layer here' option. Obviously it
> > would then have to ask if you want a raster layer, vector layer,
> > postgis layer, wms layer etc etc...
> >
> >
> From a user point of view, this would be very similar to what I'm
> suggesting, just
> more complicated to develop. My suggestion is simpler: the layer goes to
> wherever
> you have selected in the list of layers (that we wrongly call legend)
>
> >> 26. RGB color composite from individual files.
> >> 27. RGB color composite from layers within a group in the legend
> >>
> >
> > Not sure I understand these two - you want to take three individual
> > rasters and create an RGB image raster from them?
> >
> >
> Most satellite imagery comes with bands in independent files. Having the
> ability of
> displaying them as color composites would be handy. I know this can be
> done through
> a vrt file, but you have to go through the step of gdal_merge.py
> May be 27 could obviate 26 (27 is very similar to the grass imagery group)
>
> >> 28. Color (or grey) key for vector and single-band raster layers
> >>
> >
> > On the Print Composer? Or in the layer legend?
> >
> >
> In both. Having a pseudocolor layer displayed with no key for the
> colors is of very limited utility.
> >> 29. Attribute table and tips for single-band raster layers (i.e., for
> >> land-cover raster layers)
> >>
> >
> > Are you talking about categorical rasters here? Where 1=water,
> > 2=agriculture, 3=urban for example? What file formats support
> > alphanumeric labels for categories? Or would the user have to enter
> > them in Qgis themselves?
> >
> Don't know about formats, probably this should be a qgis feature. But
> displaying
> a landcover map and seeing the actual alfanumeric categories as tips and
> in the
> color key (ref. 28) would be most useful. Seeing "water" displayed as
> tip is much
> more useful than seeing "1".
>
> Agus
>
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> ------------------------------
>
> Message: 6
> Date: Sat, 28 Mar 2009 21:08:53 +0100
> From: Jachym Cepicky <jachym.cepicky at gmail.com>
> Subject: Re: [Qgis-user] on-the-fly reprojection of raster maps
> To: Florian Hillen <fhillen at uni-osnabrueck.de>
> Cc: qgis-user at lists.osgeo.org
> Message-ID: <20090328200853.GB10827 at kocour>
> Content-Type: text/plain; charset="us-ascii"
>
> Hi,
>
>
> On Sat, Mar 28, 2009 at 01:14:37PM +0100, Florian Hillen wrote:
> > Hi Jachym,
> >
> > I'm currently working on a plugin to reproject a raster file "on the fly".
> > This means in detail: load input raster -> define output name -> choose
> > projection -> reproject (and add).
> > Unfortunately gdalwarp can only warp to GTiff (the QGIS-Georeferencer and
> > the console-based fwtools only can warp to GTiff either). I'm currently
> > trying to find a solution for that, but right now I'm not very confident
> > of that.
> >
> > Best regards,
> > Florian
>
> Hmm, I'm not very familiar with this problematic, however, it would be
> IMHO nice - from the users point of view - to perform "real" OTF
> reporjection:
>
> 1) define the project projection
> 2) load the map in different coordinate system
> 3) display in project's projection
>
> so no new map would be created
>
> this could imho work, if the pyramids would be create, the demands on
> the system resources would not be that hight (?)
>
> jachym
>
> >
> >
> > > Hi,
> > > I'm just goint through the QGIS manual and wanted to ask, if there will
> > > be support for OTF projection of raster data in upcomming 1.1.x
> > > branch? According to QGIS Manual, in 1.0.x branch, only vectors can by
> > > OTF projected.
> > >
> > > Thanks
> > >
> > > Jachym
> > > --
> > > Jachym Cepicky
> > > e-mail: jachym.cepicky gmail com
> > > URL: http://les-ejk.cz
> > > GPG: http://www.les-ejk.cz/pgp/JachymCepicky.pgp
> > > Key fingerprint: 0C6D 0EAE 76BD 506C F299 ED8A C8AB 74B8 08D4 E08F
> > > _______________________________________________
> > > Qgis-user mailing list
> > > Qgis-user at lists.osgeo.org
> > > http://lists.osgeo.org/mailman/listinfo/qgis-user
> > >
> >
>
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