[Qgis-user] google earth aerial is offset

2018-07-21 Thread Boaz Bar Ilan 
hi
I use google earth satellite layer

it constantly comes with little offset

what can be done ?

thanks

boaz
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[Qgis-user] eVis Plugin Query

2018-07-21 Thread Grant Boxer 
I am having problems using eVis on multiple layers in my map window (using
QGIS 3.2). I can get the eVis plugin working fine on one layer (for example
site photos), but when I add another layer (with reports) in another layer,
the latest layer settings overwrites the original layer settings in the eVis
options. So my question is - can I have more than one layer with specific
eVis settings in a map window?

 

Grant Boxer

Perth, Western Australia

 

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Re: [QGIS-it-user] Versatilità di QGIS

2018-07-21 Thread Paolo Cavallini 
Grazie Marco.

Il 21 luglio 2018 22:03:03 CEST, Marco  ha scritto:
>Allego un esempio in PDF (con i video vado ancora carponi).
>Ovviamente l'esempio (individuazione dei Gates d'emergenza in un Piano
>di
>Protezione Civile) è fantasioso. Esempio.pdf
>  
>
>
>
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Re: [QGIS-it-user] Versatilità di QGIS

2018-07-21 Thread Marco 
Allego un esempio in PDF (con i video vado ancora carponi).
Ovviamente l'esempio (individuazione dei Gates d'emergenza in un Piano di
Protezione Civile) è fantasioso. Esempio.pdf
  



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Re: [Qgis-user] Georeferencing images

2018-07-21 Thread Nicolas Cadieux 
Hi,
Play with the placement algorithms.  Start with  the basic Helmert with 2 or 
more points. Anything more than 2 points and you will see where the distortions 
come from and give you an idea of what your are dealing with.   Finish with 
Thin Plate Spline (TPS).
Nicolas

> Le 21 juill. 2018 à 14:33, Wolstan H M Dixie  a 
> écrit :
> 
> Thanks everyone - I discovered the Plugin! However it takes a bit of 
> practice, and sometimes it fails to position the image correctly - I 
> think it needs more that 4 points, probably about 8, to work properly.
> 
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[Qgis-user] Georeferencing images

2018-07-21 Thread Wolstan H M Dixie 
Thanks everyone - I discovered the Plugin! However it takes a bit of 
practice, and sometimes it fails to position the image correctly - I 
think it needs more that 4 points, probably about 8, to work properly.

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Re: [Qgis-user] Georeferenced raster images

2018-07-21 Thread Lene Fischer 
If I understand you correct you want to see two raster layers at the same time ?
If yes it´s blending you are looking for - a fast video 
https://www.screencast.com/t/mn4KRKyrRbeg

Regards


Lene Fischer
Associate Professor

University of Copenhagen
Department of Geoscience and Natural Resource Management
Forest and Landscape College
Nødebovej 77a
3480 Fredensborg
Denmark



-Oprindelig meddelelse-
Fra: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] På vegne af Wolstan H 
M Dixie
Sendt: 21. juli 2018 00:50
Til: qgis-user@lists.osgeo.org
Emne: [Qgis-user] Georeferenced raster images

Hi - I am a new user struggling to pick up the fundamentals - I have 
successfully imported a LIDAR raster layer and hillshaded / pseudo 
coloured / contoured it.

My problem is that I want an image of a topographical map  behind it as 
a base map to provide context.

The GIS I am familiar with had the facility to take an image eg TIFF, 
JPG, PNG, georeference the four corners, and import it into a layer so 
that it was matched to the vector map. This seems a simple and I should 
have thought common requirement eg you want to put a TIFF of a historic 
map behind the modern map you are creating.

I cannot see any way of doing it - am I being obtuse?

Any help appreciated

Wolstan

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Re: [Qgis-user] Georeferenced raster images

2018-07-21 Thread Nicolas Cadieux 
http://www.qgistutorials.com/fr/docs/georeferencing_basics.html

> Le 21 juill. 2018 à 01:13, Patrick Dunford  a écrit :
> 
> I do this using Gimp to create new composite tiles based on existing 
> georeferenced contemporary aerial photo map tiles.
> 
> I believe there is a georeferencing plugin available but I was unable to 
> achieve what I needed with it because it didn't appear to be capable of 
> matching up the coordinates.
> 
> 
>> On 21/07/18 10:49, Wolstan H M Dixie wrote:
>> Hi - I am a new user struggling to pick up the fundamentals - I have
>> successfully imported a LIDAR raster layer and hillshaded / pseudo
>> coloured / contoured it.
>> 
>> My problem is that I want an image of a topographical map  behind it as
>> a base map to provide context.
>> 
>> The GIS I am familiar with had the facility to take an image eg TIFF,
>> JPG, PNG, georeference the four corners, and import it into a layer so
>> that it was matched to the vector map. This seems a simple and I should
>> have thought common requirement eg you want to put a TIFF of a historic
>> map behind the modern map you are creating.
>> 
>> I cannot see any way of doing it - am I being obtuse?
>> 
>> Any help appreciated
>> 
>> Wolstan
>> 
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Re: [Qgis-user] extract Z value along line

2018-07-21 Thread Nicolas Cadieux 
Hi,
Or you could make a line, extract the nodes and then use the point sampling 
tool.  If you create a straight line with two nodes, you can densify the line. 
This way, the nodes will be evenly spaced.
Nicolas 

> Le 21 juill. 2018 à 08:56, Micha Silver  a écrit :
> 
> "Profile Tool" plugin 
> 
> 
>> On 07/21/2018 03:51 PM, David Fox wrote:
>> Is anyone aware of a workflow to extract Z values from a raster along a line 
>> -- essentially point sampling but at nodes?
>> 
>> Cheers, 
>> David 
>> 
>> 
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> 
> -- 
> Micha Silver
> Ben Gurion Univ.
> Sde Boker, Remote Sensing Lab
> cell: +972-523-665918
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Re: [QGIS-it-user] Traduzione 2.18 LTR

2018-07-21 Thread Totò 
skampus wrote
> Ho pronta la pull request

Grazie Stefano, sei insostituibile!

saluti



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Re: [Qgis-user] extract Z value along line

2018-07-21 Thread Micha Silver 

  
  
"Profile Tool" plugin 


On 07/21/2018 03:51 PM, David Fox
  wrote:


  
  Is anyone aware of a workflow to extract Z values
from a raster along a line -- essentially point sampling but at
nodes?


Cheers, 
David 
  
  
  
  
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-- 
Micha Silver
Ben Gurion Univ.
Sde Boker, Remote Sensing Lab
cell: +972-523-665918
  

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Re: [QGIS-it-user] Traduzione 2.18 LTR

2018-07-21 Thread Stefano Campus 
Ho pronta la pull request

Il Sab 21 Lug 2018 12:32 Totò  ha scritto:

> Ciao,
> ho appena scaricato QGIS 2.18.22 LTR la traduzione è sempre ferma al 97 %
>
> saluti
>
>
>
> -
> https://pigrecoinfinito.wordpress.com/
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[Qgis-user] extract Z value along line

2018-07-21 Thread David Fox 
Is anyone aware of a workflow to extract Z values from a raster along a
line -- essentially point sampling but at nodes?

Cheers,
David
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Re: [QGIS-it-user] Versatilità di QGIS

2018-07-21 Thread Paolo Cavallini 
Bravo. Puoi pubblicare un'immagine o un blog post dove spieghi?
Grazie.

Il 21 luglio 2018 13:05:08 CEST, Marco Spaziani  ha 
scritto:
>Bisogna riconoscere (con piacere) che alcune funzionalità di QGIS sono
>veramente potenti e versatili. Con Stile layer --> Simbologia -->
>Aggiungi
>layer simbolo ho assemblato, per un layer di punti, vari sub simboli in
>un
>unico simbolo e, come risultato finale, sono riuscito a trasformare un
>semplice simbolo tipo "punto" in una sorta di etichetta personalizzata
>(fin
>qui niente di nuovo ...tempo fa, per dei simboli lineari che dovevano
>distinguermi le varie tipologie di strade, (autostrade, regionali,
>statali,
>ecc.), con  Stile layer --> Simbologia --> Aggiungi layer simbolo, sono
>riuscito a ricostruire la simbologia classica e standard degli
>stradari).
>Ora sono andato un pochino oltre. Tra i vari "sub simboli" che ho
>assemblato per il suddetto layer di punti, ho inserito anche un
>"Simbolo
>carattere" e quindi, con "Sovrascrittura definita dai dati" gli ho
>detto di
>andarsi a leggere, in una predisposta colonna (Campo) della Tabella
>attributi del layer di punti, il carattere (nello specifico, o la
>lettera A
>o la lettera B o la lettera C) che deve inserire nel simbolo di ogni
>specifico oggetto contraddistinto da quel simbolo tipo "punto". Devo
>dire
>che è venuto proprio un bel lavoro e, soprattutto, la lettura della
>carta
>ora è molto più semplice e immediata.

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[QGIS-it-user] Versatilità di QGIS

2018-07-21 Thread Marco Spaziani 
Bisogna riconoscere (con piacere) che alcune funzionalità di QGIS sono
veramente potenti e versatili. Con Stile layer --> Simbologia --> Aggiungi
layer simbolo ho assemblato, per un layer di punti, vari sub simboli in un
unico simbolo e, come risultato finale, sono riuscito a trasformare un
semplice simbolo tipo "punto" in una sorta di etichetta personalizzata (fin
qui niente di nuovo ...tempo fa, per dei simboli lineari che dovevano
distinguermi le varie tipologie di strade, (autostrade, regionali, statali,
ecc.), con  Stile layer --> Simbologia --> Aggiungi layer simbolo, sono
riuscito a ricostruire la simbologia classica e standard degli stradari).
Ora sono andato un pochino oltre. Tra i vari "sub simboli" che ho
assemblato per il suddetto layer di punti, ho inserito anche un "Simbolo
carattere" e quindi, con "Sovrascrittura definita dai dati" gli ho detto di
andarsi a leggere, in una predisposta colonna (Campo) della Tabella
attributi del layer di punti, il carattere (nello specifico, o la lettera A
o la lettera B o la lettera C) che deve inserire nel simbolo di ogni
specifico oggetto contraddistinto da quel simbolo tipo "punto". Devo dire
che è venuto proprio un bel lavoro e, soprattutto, la lettura della carta
ora è molto più semplice e immediata.
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