Re: [QGIS-it-user] approssimazione dati di un vettore

[andreaerdna]

Anita Sblano wrote
> 0.1 a 0.2 me lo trasforma in 1.000 a 2.000

Hai provato ad usare la virgola invece del punto come separatore delle cifre
decimali?

Andrea



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Re: [Qgis-user] Qgis-user Digest, Vol 164, Issue 49

[Leung, Scott (MRC)]

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Message: 4
Date: Thu, 31 Oct 2019 09:34:20 +0100
From: Anita Sblano mailto:sbla24...@gmail.com>>
To: qgis-user@lists.osgeo.org<mailto:qgis-user@lists.osgeo.org>
Subject: [Qgis-user] problem with the approximation of data
Message-ID:

mailto:ca%2b38oeopks1lwpa0nu6xduuf9ymigfkjl7mqsdsyq7ud7td...@mail.gmail.com>>
Content-Type: text/plain; charset="utf-8"

Googmornig,
I have a problem in the section graduate( symbology--->graduate).
I want to scaling data from 0 to 0.9 in ten step, but when i put in the
cases a range from 0.0 to 0.1 (or 0.1 to 0.2 etc)  the system  transforms
the range from 0 to 1.00 (or 1.00 to 2.00).
I have rinstalled the program and now  i have the 3.10 , but I have the
same problem . I have also tested my shape file in an another computer and
the approximation  works.
How it is possible?? What could be the problem?
T

Re: [Qgis-user] Qgis-user Digest, Vol 164, Issue 49

[Ken McCall]

 map
> >>> canvas, in 5.2.1.5, when I go to the Item /Properties Panel/,
> >>> there is no /Position and Size/ section showing.
> >>>
> >>> Another example: On p. 114 in ‘Creating a New Vector Dataset’,
> >>> when I try to save the dataset, I get an error message:
> >>>
> >>> ‘Layer creation failed: Failed to create file
> >>> created_shapefile.shp: Permission denied.
> >>>
> >>> In both examples, I’ve tried several times, following the
> >>> instructions, only to get the same result.
> >>>
> >>> So, questions:
> >>>
> >>> Is 3.8 that different from 3.4?
> >>>
> >>> Am I running into bugs in the software or the documentation? (It
> >>> could be user error, but I’m painstakingly following the
> >>> instructions.)
> >>>
> >>> Should I scrap 3.8 and go with 3.4 instead?
> >>>
> >>> TIA,
> >>>
> >>> Ken McCall
> >>>
> >>>
> >>> ___
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> >> Logo <https://www.geomaster.pt>
> >> *Geomaster*
> >> *Jorge Gustavo Rocha* | Software Engineer
> >> *e:*j...@geomaster.pt <mailto:j...@geomaster.pt> | *m:*+351 910 333
> 888
> >> *g:*41.54094,-8.40490 | *v: *510 906 109
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> >>
> >>
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> Message: 4
> Date: Thu, 31 Oct 2019 09:34:20 +0100
> From: Anita Sblano 
> To: qgis-user@lists.osgeo.org
> Subject: [Qgis-user] problem with the approximation of data
> Message-ID:
> <
> ca+38oeopks1lwpa0nu6xduuf9ymigfkjl7mqsdsyq7ud7td...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Googmornig,
> I have a problem in the section graduate( symbology--->graduate).
> I want to scaling data from 0 to 0.9 in ten step, but when i put in the
> cases a range from 0.0 to 0.1 (or 0.1 to 0.2 etc)  the system  transforms
> the range from 0 to 1.00 (or 1.00 to 2.00).
> I have rinstalled the program and now  i have the 3.10 , but I have the
> same problem . I have also tested my shape file in an another computer and
> the approximation  works.
> How it is possible?? What could be the problem?
> Thanks a lot for your help.
>
> --
> A.S.
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> --
>
> Message: 5
> Date: Thu, 31 Oct 2019 08:52:21 + (UTC)
> From: Patrick Marx 
> To: QGIS Users 
> Subject: [Qgis-user] Inflection point of a terrain
> Message-ID:
> <
> 13d80ab8399bfaae.4c1e6599-0f8a-4b1d-94a3-666c41c1a...@mail.outlook.com>
>
> Content-Type: text/plain; charset="utf-8"
>
> Hi all, I would like to find the contour line in a dem at the inflection
> point of the slope. I mean, I would like to know at which height the
> terrain i

Re: [Qgis-user] Qgis-user Digest, Vol 164, Issue 47

[Ken McCall]

Yep! It was where I was storing the file. The Training Manual instructions
are outdated here at the bottom of p. 114.

Thanks to Jorge and Christophe!


On Wed, Oct 30, 2019 at 3:03 PM  wrote:

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> Today's Topics:
>
>1. Re: Crash when opening project with QGIS 3.10 (Alessandro Pasotti)
>2. Re: Crash when opening project with QGIS 3.10 (Even Rouault)
>3. Re: Crash when opening project with QGIS 3.10 (Alessandro Pasotti)
>4. Problems using QGIS 3.8 with the 3.4 Training Manual (Ken McCall)
>5. Re: Problems using QGIS 3.8 with the 3.4 Training Manual
>   (Jorge Gustavo Rocha)
>
>
> --
>
> Message: 1
> Date: Wed, 30 Oct 2019 15:24:47 +0100
> From: Alessandro Pasotti 
> To: ben hutcher 
> Cc: qgis-user 
> Subject: Re: [Qgis-user] Crash when opening project with QGIS 3.10
> Message-ID:
> <
> cal5q670haext6j_cketgowhqdcenwiqxixm7mu9mmzei+3r...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> On Wed, Oct 30, 2019 at 2:54 PM ben hutcher 
> wrote:
>
> > Hi,
> > I've just tried the new release, and I have a crash when trying to reopen
> > a project that I've just saved. Can other people replicate that with the
> > attached project and advise how to fix that  ?
> >
>
>
> I actually unzipped and inspected the project before loading it (because I
> know enough about QGIS internals to know what to trust).
>
> What's this about? A social experiment?
>
> om qgis.PyQt.QtWidgets import QMessageBox
> QMessageBox.critical(None, "Nearly busted !",
> "Do you realize you blindly accepted to run untrusted code " + \
> "that could have destroyed your computer, stolen your passwords,
> etc. ?\n" + \
> "Be reassured, nothing at all apart emitting this message has been
> done.\n" + \
> "This was just an experiment to check how users react to the
> default security warning. " + \
> "If you've read that message, please add a new line to
> http://collabedit.com/662b2;)
>
>
>
> Thanks,
> > Ben
> > ___
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>
>
> --
> Alessandro Pasotti
> w3:   www.itopen.it
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> Message: 2
> Date: Wed, 30 Oct 2019 15:47:07 +0100
> From: Even Rouault 
> To: qgis-user@lists.osgeo.org
> Subject: Re: [Qgis-user] Crash when opening project with QGIS 3.10
> Message-ID: <2931006.8PTlG7Zoom@even-i700>
> Content-Type: text/plain; charset="us-ascii"
>
> > What's this about? A social experiment?
>
> Yes, I'm "Ben Hutcher". Too bad you destroyed it so quickly :-)
>
> I just discovered this functionnality of QGIS and this scared me. I
> believe I
> would have accepted the warning because I ignored that QGIS projects could
> contain Python code, and I presume a lot of users would. IMHO clicking on
> the
> Enable macros link should raise a dialog box with a more explicit message
> about the potential risks to double confirm.
>
> "Python macros cannot currently be run." sounds to me as "you should
> enable
> macros so things work as expected". It is not even clear that the macros
> come
> from the project itself. They could be some trusted code in QGIS itself.
> Once
> you know that functionnality is, then yes the current behaviour is
> probably
> fine. But if you don't know it, there's a high chance you could run
> untrusted
> code without realizing it.
>
> Even
>
> --
> Spatialys - Geospatial professional services
> http://www.spatialys.com
>
>
> --
>
> Message: 3
> Date: Wed, 30 Oct 2019 15:56:35 +0100
> From: Alessandro Pasotti 
> To: Even Rouault 
> Cc: qgis-user 
> Subject: Re: [Qgis-user] Crash when opening project with QGIS 3.10
> Message-ID:
>  0zn6wkurrrkkb7ddos2vo8...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> On Wed, Oct 30, 2019 at 3:47 PM Even Rouault 
> wrote:
>
> > > What's this about? A social experiment?
> >
> > Yes, I'm "Ben Hutcher". Too bad you destroyed it so quickly :-)
> >
>
> Oh, I'm sorry :)
>
> You should have told me ... you know, I'm in bug-fixing-mode and I couldn't
> 

Re: [Qgis-user] Inflection point of a terrain

[Jonathan Aguero Valverde]

Dear Patrick,

If you have Qgis with GRASS you can use r.geomorphon.

https://grass.osgeo.org/grass76/manuals/addons/r.geomorphon.html

I just ran a test in a DEM in QGIS 3.10 and GRASS 7.6 and it worked 
perfectly.


The image presents the geomorphons estimated:

source: grass 7.6 manual.

The resulting maps looks like this:


Hope this helps.

Jonathan.


El 31/10/2019 a las 02:52, Patrick Marx escribió:

Hi all,
I would like to find the contour line in a dem at the inflection point 
of the slope. I mean, I would like to know at which height the terrain 
is changing from convex to concave. I found plugins which calculate if 
a specific cell is convex or concave in relation to its neighbours in 
a 3 x 3 raster. But I would like to know it for a specific terrain.

Does anyone has an idea?
Regards Patrick

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--
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Profesor e Investigador
Programa de Investigación en Desarrollo Urbano Sostenible  (ProDUS)
Escuela de Ingeniería Civil
Universidad de Costa Rica
Tel: (506) 2511-2787, 2511-2777
jonathan.agu...@ucr.ac.cr

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[Qgis-user] Geocoding

[Dietrich Heintz]

Hi Scott,
I would propose to load the relevant plugin additionaly.
ciao Dieter

On 31.10.2019 14:23, Leung, Scott (MRC) wrote:


Hi everyone,

I just installed QGIS 3.10 on my work machine yesterday, and am
wondering where the geocoding tool is?  Can someone tell me where it is?

Thanks,

Scott

*From:*Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] *On Behalf
Of *Dietrich Heintz
*Sent:* Thursday, October 31, 2019 7:33 AM
*To:* QGIS Users 
*Subject:* [Qgis-user] Raster resampling

Dear all,

I would like to use OSGeo Shell for the resampling of a list of
rasterfiles.

The files are in tiff-format and I want to use a resampling method
with a gauss filter.

I would like to have a batch file with multiple lines where the first
one looks somehow like this:

gdalwarp r-cubic of GTiff input.file output.file

This would work, but I would like to enhance the cubic filtering with
an information to steer the

radius of filtering like GRA_Gauss = 7.

Kind regards

Dieter

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my web-site 
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Re: [Qgis-user] Raster resampling

[Leung, Scott (MRC)]

Hi everyone,

I just installed QGIS 3.10 on my work machine yesterday, and am wondering where 
the geocoding tool is?  Can someone tell me where it is?

Thanks,

Scott

From: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] On Behalf Of 
Dietrich Heintz
Sent: Thursday, October 31, 2019 7:33 AM
To: QGIS Users 
Subject: [Qgis-user] Raster resampling


Dear all,

I would like to use OSGeo Shell for the resampling of a list of rasterfiles.

The files are in tiff-format and I want to use a resampling method with a gauss 
filter.

I would like to have a batch file with multiple lines where the first one looks 
somehow like this:

gdalwarp r-cubic of GTiff input.file output.file

This would work, but I would like to enhance the cubic filtering with an 
information to steer the

radius of filtering like GRA_Gauss = 7.

Kind regards

Dieter
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_
Kronenbergstr. 7
CH-8800 Thalwil

+41 76 749 22 77
+41 43 540 90 71
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[QGIS-it-user] DataPllotly 3.0

[matteo]

Salve a tutti,

sfrutto questa mail (visto che tante persone iscritte hanno aiutato la
campagna di raccolta fondi) per informarvi che ieri è stato rilasciato
DataPlotly 3.0 in cui sono state implementate tutte le funzionalità.

Qui un post sul blog:

https://www.faunalia.eu/it/blog/2019-10-30-dataplotly-release

scaricate il plugin e divertitevi a fare qualche infografica geografica ;)

Grazie ancora a tutte le persone che hanno partecipato al crowdfunding

Saluti

Matteo
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[Qgis-user] Raster resampling

[Dietrich Heintz]

Dear all,

I would like to use OSGeo Shell for the resampling of a list of rasterfiles.

The files are in tiff-format and I want to use a resampling method with
a gauss filter.

I would like to have a batch file with multiple lines where the first
one looks somehow like this:

gdalwarp r-cubic of GTiff input.file output.file

This would work, but I would like to enhance the cubic filtering with an
information to steer the

radius of filtering like GRA_Gauss = 7.

Kind regards

Dieter

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CH-8800 Thalwil

+41 76 749 22 77
+41 43 540 90 71
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[QGIS-it-user] approssimazione dati di un vettore

[Anita Sblano]

Salve, ho un problema con l'approssimazione di dati nella sezione "
graduato " di un vettore.( Proprietà vettore---simbologia---graduato)
Vorrei scalare i dati da 0 a 1 in 10 step, ma quando inserisco i valori con
la virgola non me li riconosce . esempio : se scrivo il primo intervallo da
0.1 a 0.2 me lo trasforma in 1.000 a 2.000
Ho provato a passare lo shape file su un altro pc e l'approssimazione
funziona e non ho variazione di dati.
Ho anche provato a disinstallare il programma e rinstallarlo  ma niente.
Come potrei risolvere il problema?

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[Qgis-user] Inflection point of a terrain

[Patrick Marx]

Hi all, I would like to find the contour line in a dem at the inflection point 
of the slope. I mean, I would like to know at which height the terrain is 
changing from convex to concave. I found plugins which calculate if a specific 
cell is convex or concave in relation to its neighbours in a 3 x 3 raster. But 
I would like to know it for a specific terrain.Does anyone has an idea?Regards 
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[Qgis-user] problem with the approximation of data

[Anita Sblano]

Googmornig,
I have a problem in the section graduate( symbology--->graduate).
I want to scaling data from 0 to 0.9 in ten step, but when i put in the
cases a range from 0.0 to 0.1 (or 0.1 to 0.2 etc)  the system  transforms
the range from 0 to 1.00 (or 1.00 to 2.00).
I have rinstalled the program and now  i have the 3.10 , but I have the
same problem . I have also tested my shape file in an another computer and
the approximation  works.
How it is possible?? What could be the problem?
Thanks a lot for your help.

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Re: [Qgis-user] Problems using QGIS 3.8 with the 3.4 Training Manual

[Matthias Kuhn]

Hi Alexandre, Ken,

I would like to second this opinion and first thank you very much for 
bringing this subject up.


If you are fine with it, please follow Alexandre Neto's approach and add 
new issues (one per issue you encounter) here: 
https://github.com/qgis/QGIS-Documentation/issues


There we can help you (figure out what's wrong) and update the 
documentation for everyone else too.


Thanks again

Matthias

On 10/30/19 10:41 PM, Alexandre Neto wrote:

Hi Ken,

It can be any of the three problems, but, since you are following 
orders, let's assume that it's not your error.


I would start guessing that the documentation may be outdated. And it 
may not be a question of 3.4 vs 3.8, but really outdated information 
even for 3.4.


This being said, can I ask you to open qgis-documentation bug tickets, 
whenever you find problems in the documentation?


Thanks,

Alexandre Neto

A quarta, 30/10/2019, 19:18, SIGéal > escreveu:


Hi,

I remember having this problem if I typed the shapefile name
directly in the textbox, without clicking on the Browse button to
select a location for the file.

Hope this helps,

-- 
Christophe


Le 30/10/2019 à 19:29, Jorge Gustavo Rocha a écrit :


Hi Ken,

Where are you storing the new layer? Maybe you are not selecting
a folder where you can write the new shapefile (that's why you
get the permission denied error). Can you confirm the location of
the new shapefile?

Regards,

Jorge Gustavo

Às 16:15 de 30/10/19, Ken McCall escreveu:


After years of using ARCGIS, I’m using the training manual to
become acquainted with QGIS. I’ve downloaded 3.8, and worked
through the first 100 pages with no problem. While some of the
3.8 dialog boxes don’t look like the training manual I’ve been
able to see the required buttons, drop downs, etc. But on
others, I’ve hit some deadends.

For example, on page 105 when it try to create a dynamic map
canvas, in 5.2.1.5, when I go to the Item /Properties Panel/,
there is no /Position and Size/ section showing.

Another example: On p. 114 in ‘Creating a New Vector Dataset’,
when I try to save the dataset, I get an error message:

‘Layer creation failed: Failed to create file
created_shapefile.shp: Permission denied.

In both examples, I’ve tried several times, following the
instructions, only to get the same result.

So, questions:

Is 3.8 that different from 3.4?

Am I running into bugs in the software or the documentation? (It
could be user error, but I’m painstakingly following the
instructions.)

Should I scrap 3.8 and go with 3.4 instead?

TIA,

Ken McCall


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Re: [QGIS-it-user] QGIS, DB MANAGER & GEOPACKAGE - CREAZIONE DI TABELLE "INVISIBILI"(?)

[matteo]

Ciao Francesco,

ci sono ancora diversi miglioramenti da fare lato geopackage dentro QGIS
(creazione di viste, registrazione di tabelle nuove, ecc ecc)

c'è un ticket aperto, se ti va di aggiungere un tuo commento:

https://github.com/qgis/QGIS/issues/26804

A presto

Matteo
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Re: [QGIS-it-user] Query postgis ST_Union

[Amedeo Fadini]

Ciao
puoi assegnare il SR alla geometria risultante da St_union con la
funzioneST_setsrid(geom, integer)

https://postgis.net/docs/ST_SetSRID.html

Amedeo

Il mer 30 ott 2019, 22:28 Roberto Brazzelli  ha
scritto:

> Ciao a tutti,
> se creo vista con seguente query 1)  mi ritrovo con 4 geometrie
> [image: image.png]
> alle quali manca SR.
> Se invece carico la query come nuovo layer tutto funziona
> N.B.: la tab. percorsi_trekking è di tipo linestring con SR 3857
>
> Volendo creare vista come posso modificare la query?
>
> grazie
>
> Roberto
>
> 1) select row_number() over (ORDER BY ST_Union(geom))as rownum,
> ST_Union(geom) AS geom, nome, foto, lunghezza, dislivello,
> difficolta,descrizione  from percorsi_trekking where nome_cod ='P6'
> group by nome, foto, lunghezza, dislivello, difficolta,descrizione
>
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