[Qgis-user] Qgis-user Digest, Vol 91, Issue 85

Sat Sep 28 04:21:45 PDT 2013

Thank you Andrè and Alex.
It's a (not) funny thing. The procedure that alex showed me works in my
laptop but not in my desktop.
I have Lubuntu 13.04 and qgis 2.0 in both the machines.
I don't know.
Thank you

On Fri, Sep 27, 2013 at 9:00 PM, <qgis-user-request at lists.osgeo.org> wrote:

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> Today's Topics:
>
>    1. Re: MERIS projection (Andre Joost)
>    2. Re: Modis projection (and not MERIS projection) (Andre Joost)
>    3. Re: Resample a raster (G. Allegri)
>    4. Re: Modis projection (and not MERIS projection) (Alex Mandel)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 27 Sep 2013 17:17:21 +0200
> From: Andre Joost <andre+joost at nurfuerspam.de>
> To: qgis-user at lists.osgeo.org
> Subject: Re: [Qgis-user] MERIS projection
> Message-ID: <l247jb$esg$1 at ger.gmane.org>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Am 27.09.2013 07:28, schrieb Paolo Cavallini:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> >
> > Il 27/09/2013 00:05, Giacomo Fontanelli ha scritto:
> >
> >> I've found the correct proj4 projection in the site
> >> http://spatialreference.org/ref/sr-org/modis-sinusoidal/
> >> I uploaded the new projection in QGis by using "custom SR".
> >>
> >> Everything work fine, but I would like to set also the correct name to
> this
> >> projection that is EPSG:4862.
> >> By now QGIS recognizes the uploaded MERIS projection as USER:10002.
> >
> > Why it is not in standard EPSG database, as incorporated into QGIS?
>
> The code is SR-ORG:6842; EPSG:4862 is something completly different.
>
> Proj offers a lot of projections which are not used by any surveying
> Authorithy, and therefore not in the official EPSG database.
>
> Take igh (interrupted goode homolosine), ortho, aeqd and miller as
> examples.
>
> Greetings,
> Andr? Joost
>
>
>
>
> ------------------------------
>
> Message: 2
> Date: Fri, 27 Sep 2013 17:22:24 +0200
> From: Andre Joost <andre+joost at nurfuerspam.de>
> To: qgis-user at lists.osgeo.org
> Subject: Re: [Qgis-user] Modis projection (and not MERIS projection)
> Message-ID: <l247sp$j9q$1 at ger.gmane.org>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Am 27.09.2013 12:28, schrieb Giacomo Fontanelli:
> > Hello everybody
> >
> > I apologize because I have to point out two mistakes I made yesterday in
> my
> > first mail called "MERIS projection" (it was late night and I was almost
> > sleeping).
> >
> > The first mistake is that I work with MODIS and not MERIS.
> >
> > The second mistake is that the correct EPSG code for the MODIS projection
> > is 6842, as shown in
> > http://spatialreference.org/ref/sr-org/modis-sinusoidal/.
> >
> > EPSG:6842 is not available in QGIS 2.0, but there is EPSG:53008
> (Sinusoidal
> > spheric) that is almost the same
> >
> > EPSG:6842 = +proj=sinu +lon_0=0 +x_0=0 +y_0=0 +a=6371007.181
> +b=6371007.181
> > +units=m +no_defs
> > EPSG:53008= +proj=sinu +lon_0=0 +x_0=0 +y_0=0 +a=6371007 +b=6371007
> > +units=m +no_defs
> >
>
> Have a closer look: The first is SR-ORG:6842, and the second ESRI:53008.
>
> So both not official EPSG code numbers.
>
> Greetings,
> Andr? Joost
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Fri, 27 Sep 2013 17:57:03 +0200
> From: "G. Allegri" <giohappy at gmail.com>
> To: Michael Spencer <spencer.mike.r at gmail.com>
> Cc: qgis-user <qgis-user at lists.osgeo.org>
> Subject: Re: [Qgis-user] Resample a raster
> Message-ID:
>         <CAB4g1=wRTczW13=
> EeM+3eiaMGDOc5hVhax5J0DmiefvOC7K19A at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> you can do it with gdal_translate [1] that you can also run through the
> GDALTools Plugin, i.e. under the Raster menu.
>
> giovanni
>
> [1] http://www.gdal.org/gdal_translate.html
>
> Sent from Nexus
> Il 27/set/2013 16:45 "Michael Spencer" <spencer.mike.r at gmail.com> ha
> scritto:
>
> > Hi,
> >
> > Does anyone know if it's possible to resample a raster in QGIS? e.g. I
> > have a raster with a cell size of 50 m that I would like to convert to
> 100
> > m.
> >
> > I currently do this in grass, but it's a faff defining a new location and
> > then using r.resamp.stats or redefining the location, resampling, and
> then
> > redefining the original location...
> >
> > Michael
> >
> > _______________________________________________
> > Qgis-user mailing list
> > Qgis-user at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/qgis-user
> >
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> ------------------------------
>
> Message: 4
> Date: Fri, 27 Sep 2013 11:55:32 -0700
> From: Alex Mandel <tech_dev at wildintellect.com>
> To: Giacomo Fontanelli <giacomofontanelli76 at gmail.com>,
>         Qgis-user at lists.osgeo.org
> Subject: Re: [Qgis-user] Modis projection (and not MERIS projection)
> Message-ID: <5245D4A4.8040000 at wildintellect.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> On 09/27/2013 03:28 AM, Giacomo Fontanelli wrote:
> > Hello everybody
> >
> > I apologize because I have to point out two mistakes I made yesterday in
> my
> > first mail called "MERIS projection" (it was late night and I was almost
> > sleeping).
> >
> > The first mistake is that I work with MODIS and not MERIS.
> >
> > The second mistake is that the correct EPSG code for the MODIS projection
> > is 6842, as shown in
> > http://spatialreference.org/ref/sr-org/modis-sinusoidal/.
> >
> > EPSG:6842 is not available in QGIS 2.0, but there is EPSG:53008
> (Sinusoidal
> > spheric) that is almost the same
> >
> > EPSG:6842 = +proj=sinu +lon_0=0 +x_0=0 +y_0=0 +a=6371007.181
> +b=6371007.181
> > +units=m +no_defs
> > EPSG:53008= +proj=sinu +lon_0=0 +x_0=0 +y_0=0 +a=6371007 +b=6371007
> > +units=m +no_defs
> >
> > At home I still have QGIS 1.8 and I uploaded the new CRS
> >
> > By now I am in my office and I'm not able to save my custom CRS
> (EPSG:6842)
> > because the 2.0 version doesn't have the button "save" in the "custom
> CRS"
> > but only "OK".
> >
> > Any suggestion?
> >
> > Thank you
> >
> >
>
> The new Add CRS is a little buggy. Here's how to make it work:
> Hit Add CRS,
> it will add a blank CRS to the list, select it,
> now enter a name and custom proj line
> Hit Add CRS again
> This time it will be placed in the list above
> You will probably end up with an extra blank line which can now be deleted.
>
>
> If you hit just enter data and hit Add CRS your custom one vanishes.
> Once it's in the list, you can exit the dialog and it will be available
> for use. You are correct the Save button no longer exists.
>
> Thanks,
> Alex
>
>
>
>
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>
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> End of Qgis-user Digest, Vol 91, Issue 85
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