[Qgis-user] Problems with QGIS 2.18.5 install

[Emilio Bruno]

Hello,

I've figured out the problem adding the repositories: 
http://qgis.org/ubuntugis-nightly-release   and 
http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu. Although I 
believe that it's not a good practice to install nightly-release and/or 
unstable systems in a production environment, I'm sure it is  a 
temporary situation.

Thanks Jürgen  and Andre for the help.

Cheers,

Emilio Bruno


On 07/04/2017 16:00, qgis-user-request at lists.osgeo.org wrote:
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> Today's Topics:
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>     1. Re: Custom CRS - adding a rotation (Paul Paris)
>     2. Problems with QGIS 2.18.5 install (Emilio Bruno)
>     3. Re: Problems with QGIS 2.18.5 install (Jürgen E. Fischer)
>     4. Re: Problems with QGIS 2.18.5 install (Andre Joost)
>     5. Re: Problems with QGIS 2.18.5 install (Jürgen E. Fischer)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 6 Apr 2017 15:46:25 -0400
> From: Paul Paris <pjparis2 at gmail.com>
> To: Qgis Users List <qgis-user at lists.osgeo.org>
> Subject: Re: [Qgis-user] Custom CRS - adding a rotation
> Message-ID:
> 	<CAAuOeMczg7B=-60iK1RHaqxNaV2KenJr_45x6j+uUm-Oe+Y=+Q at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> GRASS's v.transform:
> https://grass.osgeo.org/grass70/manuals/v.transform.html might also be
> useful here.
>
> Paul
>
> On Thu, Apr 6, 2017 at 11:10 AM, Andre Joost <andre+joost at nurfuerspam.de>
> wrote:
>
>> Am 05.04.2017 um 20:46 schrieb Brock Riedell:
>>
>>> I have some downloaded geologic map shapefiles that were digitized
>>> incorrectly in UTM space, and they render a few hundred meters away from
>>> their proper locations on georeferenced U.S. topo maps as well as on
>>> Google, Bing, and ESRI online base map data. This is too much for datum
>>> shift; the NAD27 to NAD83 transformation should offset coordinates about
>>> 90 m.  I have determined that the correction involves a counterclockwise
>>> rotation of ~1.4 degrees and not a simple translation. I have reviewed
>>> the PROJ.4 documentation about using the 7-parameter 'towgs84' options
>>> to add the rotation.  I have not been able to get this working by trial
>>> and error; the data plot out 150-200 km away from where they should be.
>>> Questions:
>>>
>>> (1) Do I need to input the rotation value as both Rx and Ry?
>>> (2)The documentation says rotations are input as seconds of arc rather
>>> than degrees, correct?
>>> (3) How does the scaling parameter in towgs84 interact with the scale
>>> factor k_0?
>>>
>> The towgs84 parameters are really ment for small rotations only. If you
>> have big rotations, think of using a custom oblique mercator transformation.
>>
>> You can find an example at http://gis.stackexchange.com/q
>> uestions/83861/using-customized-coordinate-system-in-arcgis-desktop
>>
>> HTH,
>> André Joost
>>
>>
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> ------------------------------
>
> Message: 2
> Date: Thu, 6 Apr 2017 22:55:40 -0300
> From: Emilio Bruno <emiliobrunoneto at gmail.com>
> To: qgis-user at lists.osgeo.org
> Subject: [Qgis-user] Problems with QGIS 2.18.5 install
> Message-ID: <7dff5571-4428-11ba-febe-f74290a5f339 at gmail.com>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Hello ,
>
>    At the present moment I can not install QGIS 2.18.5 on Ubuntu 16.04
> due to gdal-abi-2-1-3  missing library from official repositories.
> When will this problem  be solved  ?
> The previous versions are not available to install.
> Please help !
>
> Thanks,
>
> Emilio Bruno


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