Re: [Qgis-user] failed to add WMS layer

[Andrea Peri]

Have you the cache to zero size?
I discovered this kind of strangenissue some weeks ago

If the qgis cache size is turn to zero the capabilities fail when go to add
the map to the Canvas.
This issue is on only with some wms (mapserver, geoserver) do not with
qgisserver.

I dont know with arcgis rest services.

A.


Il gio 1 ago 2019, 20:08 Stewart Holt  ha scritto:

> I use USGS WMS and WMTS layers. At some point in the recent past the WMS
> layers stopped working. I am almost sure they have worked in QGIS V3. I
> usually use WMTS because of the speed, but for final publishing, I have
> seen some cases where a corresponding WMS layer is higher definition, so I
> would like to be able to use it. Also the long timeout while starting the
> project is unfortunate and I don't want to delete the WMS layer. Here is a
> WMS layer which fails:
>
>
> https://basemap.nationalmap.gov/arcgis/services/USGSTopo/MapServer/WMSServer?request=GetCapabilities&service=WMS
>
> And a corresponding WMTS layer which works:
>
>
> https://basemap.nationalmap.gov/arcgis/rest/services/USGSTopo/MapServer/WMTS/1.0.0/WMTSCapabilities.xml
>
> On the failing WMS layer, I have removed it and added it back. When I test
> it I get a message saying that a get capabilities request has failed. I
> hope someone who might be able to figure out what is going on can give this
> URL a try.
>
> Thanks,
>
> Stewart
>
> On Thu, Jul 25, 2019 at 12:20 PM Alessandro Pasotti 
> wrote:
>
>>
>>
>> On Thu, Jul 25, 2019 at 12:34 PM Manuel Fernandez 
>> wrote:
>>
>>> Hi, everyone. I have a problem
>>> When adding a WMS layer, I get this error:
>>> Capabilities could not be downloaded: Capabilities download failed:
>>> Connection closed.
>>> It used to work.
>>>
>>
>> Can you provide the WMS address?
>>
>> BTW, I've recently hit a similar issues and it ended up being an upstream
>> QT issue: https://bugreports.qt.io/browse/QTBUG-76821
>>
>>
>>
>>
>>> Thanks in advance
>>> ___
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>>
>>
>>
>> --
>> Alessandro Pasotti
>> w3:   www.itopen.it
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Re: [Qgis-user] Smoothing polygons

[Christoph Jung]

What a shame, I totally ignored the grass tools ^^’

Thanks at all for your fast responses. I will try it out during the next days. 

Christoph 

> Am 01.08.2019 um 17:35 schrieb Carolina Boccato :
> 
> Hi Christoph,
> 
> Yes, there is this implementation!
> 
> In the processing toolbox at the Grass provider you will find v.generalize. 
> This one has several algorithms, one of them is chaikins.
> 
> Sincerely, 
> Carolina 
> 
> 
>> On Thu, 1 Aug 2019 at 10:18, Stefan Giese  
>> wrote:
>> Hi Christoph,
>> 
>> under processing tools you will find 2 vector smooth tools, one is native 
>> QGIS, the other comes from SAGA 
>> (http://www.saga-gis.org/saga_tool_doc/2.2.2/shapes_lines_7.html). Just type 
>> "smooth" into the filter of the processing tools.
>> 
>> Mit freundlichen Grüßen
>> Stefan Giese
>> Projektleiter/Consultant
>> **
>> Kompaktkurs Aufbau einer GDI mit Open-Source-Software
>> FOSS Academy Sommerschule: 23. bis 27.09.2019
>> https://www.foss-academy.com/kompaktkurse.html
>> **
>> WhereGroup GmbH
>> Eifelstraße 7
>> 53119 Bonn
>> Germany
>> 
>> Fon: +49 (0)228 / 90 90 38 - 61
>> Fax: +49 (0)228 / 90 90 38 - 11
>> 
>> stefan.gi...@wheregroup.com
>> www.wheregroup.com
>> Geschäftsführer:
>> Olaf Knopp, Peter Stamm 
>> Amtsgericht Bonn, HRB 9885
>>> Am 01.08.2019 um 15:09 schrieb Christoph Jung:
>>> Hello everybody,
>>> 
>>> Does QGIS has a similar smoothing function like ArcGIS described in the 
>>> following webpage?
>>> https://desktop.arcgis.com/de/arcmap/10.3/tools/cartography-toolbox/smooth-polygon.htm
>>> 
>>> I think I saw something like the result of the PAEK algorithm in QGIS, but 
>>> I cannot remember when and where ^^
>>> 
>>> Does an implementation of the chaikins algorithm exists in any tool, that 
>>> can be integrated into the toolbox?
>>> 
>>> I tried out the Smooth processing directly in QGIS and the plugin 
>>> cartographic line generalisation. But both are too close orientated on the 
>>> original geometry for me. I am searching for the possibility to create a 
>>> more abstract copy of a polygon. Maybe somebody has some ideas about it. 
>>> 
>>> Sincerely,
>>> Christoph 
>>> 
>>> 
>>> ___
>>> Qgis-user mailing list
>>> Qgis-user@lists.osgeo.org
>>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
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Re: [Qgis-user] Informação.

[Jorge Gustavo Rocha]

Oi Paulo,

Tenta em https://gadm.org/

Boa sorte,

Jorge Gustavo

Às 19:49 de 01/08/19, Paulo Brandao escreveu:
> Boa tarde...
>
> Onde posso baixar shapefiles dos EUA (divisão dos estados) e da África
> (divisão dos estados) ?
>
> Pois não estou localizando onde baixar estes arquivos.
>
> Obrigado.
>
> Paulo Brandão.
>
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[Qgis-user] Informação.

[Paulo Brandao]

Boa tarde...

Onde posso baixar shapefiles dos EUA (divisão dos estados) e da África
(divisão dos estados) ?

Pois não estou localizando onde baixar estes arquivos.

Obrigado.

Paulo Brandão.
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Re: [Qgis-user] failed to add WMS layer

[Stewart Holt]

I use USGS WMS and WMTS layers. At some point in the recent past the WMS
layers stopped working. I am almost sure they have worked in QGIS V3. I
usually use WMTS because of the speed, but for final publishing, I have
seen some cases where a corresponding WMS layer is higher definition, so I
would like to be able to use it. Also the long timeout while starting the
project is unfortunate and I don't want to delete the WMS layer. Here is a
WMS layer which fails:

https://basemap.nationalmap.gov/arcgis/services/USGSTopo/MapServer/WMSServer?request=GetCapabilities&service=WMS

And a corresponding WMTS layer which works:

https://basemap.nationalmap.gov/arcgis/rest/services/USGSTopo/MapServer/WMTS/1.0.0/WMTSCapabilities.xml

On the failing WMS layer, I have removed it and added it back. When I test
it I get a message saying that a get capabilities request has failed. I
hope someone who might be able to figure out what is going on can give this
URL a try.

Thanks,

Stewart

On Thu, Jul 25, 2019 at 12:20 PM Alessandro Pasotti 
wrote:

>
>
> On Thu, Jul 25, 2019 at 12:34 PM Manuel Fernandez 
> wrote:
>
>> Hi, everyone. I have a problem
>> When adding a WMS layer, I get this error:
>> Capabilities could not be downloaded: Capabilities download failed:
>> Connection closed.
>> It used to work.
>>
>
> Can you provide the WMS address?
>
> BTW, I've recently hit a similar issues and it ended up being an upstream
> QT issue: https://bugreports.qt.io/browse/QTBUG-76821
>
>
>
>
>> Thanks in advance
>> ___
>> Qgis-user mailing list
>> Qgis-user@lists.osgeo.org
>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>
>
>
> --
> Alessandro Pasotti
> w3:   www.itopen.it
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Re: [Qgis-user] Smoothing polygons

[Carolina Boccato]

Hi Christoph,

Yes, there is this implementation!

In the processing toolbox at the Grass provider you will find v.generalize.
This one has several algorithms, one of them is chaikins.

Sincerely,
Carolina


On Thu, 1 Aug 2019 at 10:18, Stefan Giese 
wrote:

> Hi Christoph,
>
> under processing tools you will find 2 vector smooth tools, one is native
> QGIS, the other comes from SAGA (
> http://www.saga-gis.org/saga_tool_doc/2.2.2/shapes_lines_7.html). Just
> type "smooth" into the filter of the processing tools.
>
> Mit freundlichen Grüßen
> Stefan Giese
> Projektleiter/Consultant
> **
> Kompaktkurs Aufbau einer GDI mit Open-Source-Software
> FOSS Academy Sommerschule: 23. bis 
> 27.09.2019https://www.foss-academy.com/kompaktkurse.html
> **
> WhereGroup GmbH
> Eifelstraße 7
> 53119 Bonn
> Germany
>
> Fon: +49 (0)228 / 90 90 38 - 61
> Fax: +49 (0)228 / 90 90 38 - 11
> stefan.gi...@wheregroup.comwww.wheregroup.com
> Geschäftsführer:
> Olaf Knopp, Peter Stamm
> Amtsgericht Bonn, HRB 9885
>
> Am 01.08.2019 um 15:09 schrieb Christoph Jung:
>
> Hello everybody,
>
> Does QGIS has a similar smoothing function like ArcGIS described in the
> following webpage?
>
> https://desktop.arcgis.com/de/arcmap/10.3/tools/cartography-toolbox/smooth-polygon.htm
>
> I think I saw something like the result of the PAEK algorithm in QGIS, but
> I cannot remember when and where ^^
>
> Does an implementation of the chaikins algorithm exists in any tool, that
> can be integrated into the toolbox?
>
> I tried out the Smooth processing directly in QGIS and the plugin
> cartographic line generalisation. But both are too close orientated on the
> original geometry for me. I am searching for the possibility to create a
> more abstract copy of a polygon. Maybe somebody has some ideas about it.
>
> Sincerely,
> Christoph
>
> ___
> Qgis-user mailing listqgis-u...@lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>
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[Qgis-user] Investigation into available services

[Richard McDonnell]

Hi all,
I am unsure if this is the right space for this, but was hoping someone might 
be able to help me, or point me in the correct direction. I have posted on the 
European OSGeo mailing list, but have had very few hits!

I am carrying out research into Service Providers, to see what options are 
available to is in order to establish a full robust Enterprise FOSS4G solution 
within the Organisation.

We are currently running

· Postgresql/PostGIS

· GeoServer

· OpenLayers

· GeoDjango…etc..

With most people within the Organisation using OSGeo4w for the instillation of 
QGIS Desktop Software and ancillaries.
In our current state, keeping the systems up to date and Stable is quite time 
consuming, so we are hoping to free up resources by having the systems/services 
installed, managed and updated on an annual basis with a Maintenance agreement 
for a defined period.
What we are looking for is to have the above, plus with a few additional 
services we are currently missing:


1.   Instillation/Updating and Maintenance of Postgresql and PostGIS

2.   Instillation/Updating and Maintenance of GeoNode/GeoNetwork for Data 
Cataloguing

3.   Instillation/Updating and Maintenance of Vector/Raster Tiling Service 
(Caching).

4.   Instillation/Updating and Maintenance of GeoServer for Web Map Services

5.   Instillation/Updating and Maintenance of OpenLayers

6.   Instillation/Updating and Maintenance of GeoDjango

There may be more , but the above is the core we need to operate effectively.

It is important that the provided services are Open Source and not specific to 
one provider, all services should be available through OSGeo/FOSS4G and free 
from Licencing costs or other restrictions of use. Initially we are not looking 
for cloud services, physical infrastructure will be provided, but advice on 
this may initially be required to help establish a complete solution.

Regards & Thanks in advance for your help,

Richard.




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Re: [Qgis-user] Smoothing polygons

[Stefan Giese]

Hi Christoph,

under processing tools you will find 2 vector smooth tools, one is 
native QGIS, the other comes from SAGA 
(http://www.saga-gis.org/saga_tool_doc/2.2.2/shapes_lines_7.html). Just 
type "smooth" into the filter of the processing tools.


Mit freundlichen Grüßen
Stefan Giese
Projektleiter/Consultant
**
Kompaktkurs Aufbau einer GDI mit Open-Source-Software
FOSS Academy Sommerschule: 23. bis 27.09.2019
https://www.foss-academy.com/kompaktkurse.html
**
WhereGroup GmbH
Eifelstraße 7
53119 Bonn
Germany

Fon: +49 (0)228 / 90 90 38 - 61
Fax: +49 (0)228 / 90 90 38 - 11

stefan.gi...@wheregroup.com
www.wheregroup.com
Geschäftsführer:
Olaf Knopp, Peter Stamm
Amtsgericht Bonn, HRB 9885

Am 01.08.2019 um 15:09 schrieb Christoph Jung:

Hello everybody,

Does QGIS has a similar smoothing function like ArcGIS described in 
the following webpage?

https://desktop.arcgis.com/de/arcmap/10.3/tools/cartography-toolbox/smooth-polygon.htm

I think I saw something like the result of the PAEK algorithm in QGIS, 
but I cannot remember when and where ^^


Does an implementation of the chaikins algorithm exists in any tool, 
that can be integrated into the toolbox?


I tried out the Smooth processing directly in QGIS and the plugin 
cartographic line generalisation. But both are too close orientated on 
the original geometry for me. I am searching for the possibility to 
create a more abstract copy of a polygon. Maybe somebody has some 
ideas about it.


Sincerely,
Christoph

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Re: [Qgis-user] Raster analysis , Proximity (raster distance)

[Richard McDonnell]

Hi Dimitris,

Best tool available is GDAL. You can use this from within QGIS, by going to, 
Processing Toolbox and typing in repro select Warp (reproject), select your 
Input layer, set your Source CRS and then select the Target CRS.
This should be able to do what you want.
Hope it helps,

Regards,

Richard.


From: Dimitris sal 
Sent: 01 August 2019 13:32
To: Richard McDonnell 
Cc: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Raster analysis , Proximity (raster distance)

I tried to change the CRS to a meter one , i create a new distance analysis 
with it and when i try to convert it back to EPSG 4326 the data in the raster 
was destroyed.

Richard my image is at 700x700 at specific coordinates in degrees. Is there any 
tool i can use to convert the data from my raster from degrees to meters?

Στις Πέμ, 1 Αυγ 2019 στις 2:41 μ.μ., ο/η Richard McDonnell 
mailto:richard.mcdonn...@opw.ie>> έγραψε:
Hi Dimitris,
Welcome!!

To answer your question, use the Georeferenced coordinates and run, the 
distances will be based on the resolution of your image, so 5m resolution will 
result in a proximity raster of 5m intervals.
You might want to set the Maximum distance, as this will help to minimise 
processing and Image size.
Reagrds,

Richard.


From: Qgis-user 
mailto:qgis-user-boun...@lists.osgeo.org>> 
On Behalf Of Dimitris sal
Sent: 01 August 2019 12:13
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] Raster analysis , Proximity (raster distance)

Hello to all ,

This is my first message here. I am trying to create a proximity map with the 
Raster analysis tool. My problem is that I only get two options for distance 
units , pixels coordinates and georeferenced coordinates while I want to get 
them in meters.

I also used the grass tool , r.grow.distance that provides in advanced 
parameters the option "Output distances in meters instead of map units" If i 
check this option i get the following error ERROR: Raster map or group not 
found.

Does any of you know any workaround for this?

I am using QGiS 3.8.1 with GRASS 7.6.1

Kind regards
Dimitris


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[Qgis-user] Smoothing polygons

[Christoph Jung]

Hello everybody,

Does QGIS has a similar smoothing function like ArcGIS described in the 
following webpage?
https://desktop.arcgis.com/de/arcmap/10.3/tools/cartography-toolbox/smooth-polygon.htm

I think I saw something like the result of the PAEK algorithm in QGIS, but I 
cannot remember when and where ^^

Does an implementation of the chaikins algorithm exists in any tool, that can 
be integrated into the toolbox?

I tried out the Smooth processing directly in QGIS and the plugin cartographic 
line generalisation. But both are too close orientated on the original geometry 
for me. I am searching for the possibility to create a more abstract copy of a 
polygon. Maybe somebody has some ideas about it. 

Sincerely,
Christoph ___
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Re: [Qgis-user] Raster analysis , Proximity (raster distance)

[Dimitris sal]

I tried to change the CRS to a meter one , i create a new distance analysis
with it and when i try to convert it back to EPSG 4326 the data in the
raster was destroyed.

Richard my image is at 700x700 at specific coordinates in degrees. Is there
any tool i can use to convert the data from my raster from degrees to
meters?

Στις Πέμ, 1 Αυγ 2019 στις 2:41 μ.μ., ο/η Richard McDonnell <
richard.mcdonn...@opw.ie> έγραψε:

> Hi Dimitris,
>
> Welcome!!
>
>
>
> To answer your question, use the Georeferenced coordinates and run, the
> distances will be based on the resolution of your image, so 5m resolution
> will result in a proximity raster of 5m intervals.
>
> You might want to set the Maximum distance, as this will help to minimise
> processing and Image size.
>
> Reagrds,
>
>
>
> Richard.
>
>
>
>
>
> *From:* Qgis-user  *On Behalf Of *Dimitris
> sal
> *Sent:* 01 August 2019 12:13
> *To:* qgis-user@lists.osgeo.org
> *Subject:* [Qgis-user] Raster analysis , Proximity (raster distance)
>
>
>
> Hello to all ,
>
>
>
> This is my first message here. I am trying to create a proximity map with
> the Raster analysis tool. My problem is that I only get two options for
> distance units , pixels coordinates and georeferenced coordinates while I
> want to get them in meters.
>
>
>
> I also used the grass tool , r.grow.distance that provides in advanced
> parameters the option "Output distances in meters instead of map units" If
> i check this option i get the following error ERROR: Raster map or group
> not found.
>
>
>
> Does any of you know any workaround for this?
>
>
>
> I am using QGiS 3.8.1 with GRASS 7.6.1
>
>
>
> Kind regards
>
> Dimitris
>
>
> Email Disclaimer: http://www.opw.ie/en/disclaimer/
>
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Re: [Qgis-user] Raster analysis , Proximity (raster distance)

[Richard McDonnell]

Hi Dimitris,
Welcome!!

To answer your question, use the Georeferenced coordinates and run, the 
distances will be based on the resolution of your image, so 5m resolution will 
result in a proximity raster of 5m intervals.
You might want to set the Maximum distance, as this will help to minimise 
processing and Image size.
Reagrds,

Richard.


From: Qgis-user  On Behalf Of Dimitris sal
Sent: 01 August 2019 12:13
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] Raster analysis , Proximity (raster distance)

Hello to all ,

This is my first message here. I am trying to create a proximity map with the 
Raster analysis tool. My problem is that I only get two options for distance 
units , pixels coordinates and georeferenced coordinates while I want to get 
them in meters.

I also used the grass tool , r.grow.distance that provides in advanced 
parameters the option "Output distances in meters instead of map units" If i 
check this option i get the following error ERROR: Raster map or group not 
found.

Does any of you know any workaround for this?

I am using QGiS 3.8.1 with GRASS 7.6.1

Kind regards
Dimitris



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Re: [Qgis-user] Raster analysis , Proximity (raster distance)

[Raymond Nijssen]

Hi Dimitris,

You could convert your raster data into a projection that uses meters.

> Layer > Save as...

Raymond


On 01-08-19 13:12, Dimitris sal wrote:

Hello to all ,

This is my first message here. I am trying to create a proximity map 
with the Raster analysis tool. My problem is that I only get two options 
for distance units , pixels coordinates and georeferenced coordinates 
while I want to get them in meters.


I also used the grass tool , r.grow.distance that provides in advanced 
parameters the option "Output distances in meters instead of map units" 
If i check this option i get the following error ERROR: Raster map or 
group not found.


Does any of you know any workaround for this?

I am using QGiS 3.8.1 with GRASS 7.6.1

Kind regards
Dimitris

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[Qgis-user] Raster analysis , Proximity (raster distance)

[Dimitris sal]

Hello to all ,

This is my first message here. I am trying to create a proximity map with
the Raster analysis tool. My problem is that I only get two options for
distance units , pixels coordinates and georeferenced coordinates while I
want to get them in meters.

I also used the grass tool , r.grow.distance that provides in advanced
parameters the option "Output distances in meters instead of map units" If
i check this option i get the following error ERROR: Raster map or group
not found.

Does any of you know any workaround for this?

I am using QGiS 3.8.1 with GRASS 7.6.1

Kind regards
Dimitris
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