Re: [Qgis-user] Unable to load project

[Patrick Dunford]

The Windows version of Qgis allows you to run multiple versions on your 
computer side by side. I personally haven't used the Windows version for 
several years so I can't be sure if you will have any issues running 3.0 
alongside your current version. I run many of the editions I have in 
virtual machines. If your PC has 8 GB or more of memory, or if you have 
access to another computer that can run Linux, then you can try it out 
in a Linux virtual machine or physical computer environment without 
disturbing your current installation.



On 08/06/18 07:38, Springfield Harrison wrote:


hello Patrick, thanks for your ideas. I will try the no plugins option.

The program will run with no project loaded and it will run older 
project files but has problems with newer ones for the same project.


I can load an older project file and then add newer layers to it and 
reconfigure them, Etc. This is very tedious but will amount to a 
recovery. It is better than starting from scratch for sure. But will 
the same problem reoccur?


I have contemplated migrating to version 3 but I'm always leery of 
upgrades of anything as they often bring problems with them. In this 
list I notice many references to installation issues and things not 
running. 2.10 is a devil I know.


can I expect any difficulties installing 3.0 +?

Cheers . . . . .   Spring
Samsung Tab 4

On Jun 7, 2018 1:30 AM, "Patrick Dunford" > wrote:


Thre are a number of troubleshooting steps to try out

1. Start up qgis using the -noplugins switch or remove all
installed plugins or test removing one at a time.

2. Backup the config file and start with a new empty config.

Qgis 2.10 is well out of support, is there any reason you can't
migrate to 3.0?


On 07/06/18 18:28, Springfield Harrison wrote:


hello Phil,

I did open the project file in Word, 2033 pages, and found 13
instances referring to the dxf file. Hard to say if anything was
wrong there, nothing obvious. At least to me. Some other research
I did indicates that maybe there is an authentication problem,
not sure just what that boils down to.

I don't think the dxf file is the problem. I renamed it and
bypassed it on the startup routine which the program accepted but
it still seized up with a spinning cursor. Some things still
function, such as modifying the properties of a layer , Etc. But
the screen is blank and nothing can be saved.

For some time I have noticed that loading a project file bogs
down for a while and then would resume to completion. Now it bogs
down and blows up. The key message seems to be unknown exception.

Some older project files do load successfully however...

Cheers . . . . .   Spring
Samsung Tab 4

On Jun 6, 2018 11:15 PM, "Phil Wyatt" mailto:p...@wyatt-family.com>> wrote:

Can you open a copy of the previous project file in something
like notepad and see if anything obvious can be fixed and or
removed in relation to the DXF layer?

*From:*Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org
] *On Behalf Of
*Springfield Harrison
*Sent:* Thursday, 7 June 2018 1:36 PM
*To:* qgis-user@lists.osgeo.org
 List
*Subject:* [Qgis-user] Unable to load project

Hello All,

Bad News.  I am unable to load a project that normally works
with no problems:

 1. QGIS 2.10.1, Windows 7.
 2. Project starts to load, loads many layers . . .
 3. halts loading "point Entity", a DXF file
 4. the DXF file was renamed to trigger the Handle Bad Layers
service
 5. this was bypassed but project loading still fails to
complete, cursor spinner on constantly
 6. exiting with Save triggers "Unknown Exception"
 7. the project file is trashed to 0kb
 8. Exiting without Save is OK but no project can be loaded
 9. Restoring previous project file versions yields the same
results
10. Loading some other projects works but may have cursor spinner

Any ideas what is going on here?  I have rebooted the computer.

Thanks very much . . . .

Cheers . . . . . Springfield Harrison



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Re: [Qgis-user] Converting X Y Coordinates to Latitude/Longitude

[Nicolas Cadieux]

Hi David,

I’am an archaeologist working in Québec. If you vectorized the map in a local 
CRS, all you need to do is do a « save as » and change the CRS (coordinate 
reference system) that is in Longitude Latitude.  If your map is not 
georefenrenced (that is, you just scanned the map and did not use a CRS, that 
is more complicated but not impossible.  I usually fixe that do in a CAD but I 
am sure you can do it in QGIS.  We could talk if you want and I could help you 
out figured the next steps and steps to avoid this problem (like georefereing 
the raster map before you start) .Send me an email directly.

You could look at this also.
https://gis.stackexchange.com/questions/136817/qgis-moving-the-layer-all-features-using-vector-affine-transformation

Nicolas

> Le 7 juin 2018 à 20:49, David Hochfelder  a écrit :
> 
> Hi All,
> 
> I am new to QGIS, so this may be a newbie question easily answered by the 
> more experienced.
> 
> I'm working on a historical GIS project to remap an area of Albany, NY 
> demolished for urban renewal in 1962. I've succeeded in vectorizing a 
> historic map of the area (~1960), but the coordinates are not in lat/long 
> form. I see that there are plugins for converting tables of specific 
> coordinates, but I want to convert the entire map continuously. 
> 
> This area no longer exists--all the buildings and streets were cleared for 
> the Empire State Plaza state capitol complex.
> 
> My end goal is to use the rectified map as a way to geotag historic 
> photographs of particular buildings.
> 
> Is there a way to convert the coordinates in a continuous fashion for the 
> entire region?
> 
> Thanks for your help.
> 
> Dave Hochfelder
> 
> 
> David Hochfelder
> Associate Professor
> History Department
> Social Science 060B
> University at Albany, SUNY
> Albany, NY 1
> 518-442-5348
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[Qgis-user] Many GRASS tools in Processing are unusable (QGIS 3.0.3 on Mac OS X 10.12.6)

[Garth Fletcher]

Many of the processing tools in GRASS, which worked with QGIS 2.18.15,
are unusable in QGIS 3.0.3 under Mac OS X 10.12.6.

They fail with an "ERROR: Path '//' doesn't exist" 
message.


I reported this a week ago in report #19073, but thought a reminder
here might help.

QGIS is a wonderful program and I'm looking forward to being able to
use 3.0.x.

Cordially,
--
Garth Fletcher
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[Qgis-user] Converting X Y Coordinates to Latitude/Longitude

[David Hochfelder]

Hi All,

I am new to QGIS, so this may be a newbie question easily answered by the
more experienced.

I'm working on a historical GIS project to remap an area of Albany, NY
demolished for urban renewal in 1962. I've succeeded in vectorizing a
historic map of the area (~1960), but the coordinates are not in lat/long
form. I see that there are plugins for converting tables of specific
coordinates, but I want to convert the entire map continuously.

This area no longer exists--all the buildings and streets were cleared for
the Empire State Plaza state capitol complex.

My end goal is to use the rectified map as a way to geotag historic
photographs of particular buildings.

Is there a way to convert the coordinates in a continuous fashion for the
entire region?

Thanks for your help.

Dave Hochfelder


David Hochfelder
Associate Professor
History Department
Social Science 060B
University at Albany, SUNY
Albany, NY 1
518-442-5348
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Re: [Qgis-user] QGIS3 Zonal Stat in raster Analysis fail count

[Nyall Dawson]

On Wed, 6 Jun 2018 at 02:25, Mensio Federico  wrote:
>
> But the raster and vector have the same CRS.
> The raster is 20X20m, the grid 100mX100m and the two files have the same 
> origin.

Please check with the next round of nightly releases - I've just
pushed many fixes and optimisations for zonal stats to the 3.2 builds.

Nyall
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Re: [Qgis-user] Coordinate Conversion

[Nicolas Cadieux]

Hi,

I am not sure about v.transforme but GDA94 is handled in QGIS. I imagine that 
this is not the case with the local projection and that you are trying to find 
the transformation?  Usually, my way to deal with this is to contact the local 
governments.  They normally have software to convert local grids when these are 
not widely used.  If you have the epgs code, you could download the grid 
parameters and create a custom projection using the proj4 parameters.

http://spatialreference.org/ref/epsg/

Nicolas


> Le 7 juin 2018 à 00:36, Grant Boxer  a écrit :
> 
> I have local grid coordinates (no projection) and I want to convert it into 
> real world (GDA94 z 50) UTM coordinates. I have 4 points with both local and 
> real world coordinates. I have looked at using v.transform but I need a way 
> to calculate the parameters for the transform. Any suggestions where/how I 
> can do this?
>  
> Grant Boxer
> Perth, Western Australia
>  
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Re: [Qgis-user] Coordinate Conversion

[Kirk Schmidt]

Hi Grant:

I would have a look at v.rectify which is a Grass routine that you can 
access through the processing toolbox>Vector>v.rectify.



Kirk Schmidt

New Glasgow, Nova Scotia, Canada


On 6/7/2018 1:36 AM, Grant Boxer wrote:


I have local grid coordinates (no projection) and I want to convert it 
into real world (GDA94 z 50) UTM coordinates. I have 4 points with 
both local and real world coordinates. I have looked at using 
v.transform but I need a way to calculate the parameters for the 
transform. Any suggestions where/how I can do this?


Grant Boxer

Perth, Western Australia



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--
Kirk Schmidt, MScF, BScF, RPF
General Manager
Nortek Resource Solutions Inc.
RR # 1
Thorburn, NS
B0K 1W0
Tel (902) 922.3607
Email: k...@nortekresources.com
Web: www.nortekresources.com

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Re: [QGIS-it-user] Somma con valori NULL

[Totò]

Carlo Nardi wrote
> Buongiorno a tutti
> 
> Dovrei sommare dei campi valori, ma all'interno di alcuni record ho il
> valore NULL.
> 
> Non riesco a ricordarmi come deve essere compilata la stringa per 
> "saltare" il valore NULL ed ottenere la somma di tutti gli altri.
> 
> Chi può aiutarmi?

la funzione da usare è coalesce trovi descrizione qui [0]

coalesce ("field1", 0) + coalesce ("field2", 0) 

in sostanza se il "field1" 0 "field2" hanno valori NULL puoi fare
sostituire, solo per l'espressione, un valore io ho scelto 0



[0]
https://github.com/pigreco/HfcQGIS/blob/master/gr_funzioni/condizioni/funzioni/coalesce.md



-
https://pigrecoinfinito.wordpress.com/
--
Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-Italian-User-f5250612.html
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[QGIS-it-user] Somma con valori NULL

[Carlo Nardi]

 Buongiorno a tutti



Dovrei sommare dei campi valori, ma all'interno di alcuni record ho il valore 
NULL.

Non riesco a ricordarmi come deve essere compilata la stringa per 
"saltare" il valore NULL ed ottenere la somma di tutti gli altri.

Chi può aiutarmi?

Grazie

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Re: [Qgis-user] Unable to load project

[Patrick Dunford]

Thre are a number of troubleshooting steps to try out

1. Start up qgis using the -noplugins switch or remove all installed 
plugins or test removing one at a time.


2. Backup the config file and start with a new empty config.

Qgis 2.10 is well out of support, is there any reason you can't migrate 
to 3.0?



On 07/06/18 18:28, Springfield Harrison wrote:


hello Phil,

I did open the project file in Word, 2033 pages, and found 13 
instances referring to the dxf file. Hard to say if anything was wrong 
there, nothing obvious. At least to me. Some other research I did 
indicates that maybe there is an authentication problem, not sure just 
what that boils down to.


I don't think the dxf file is the problem. I renamed it and bypassed 
it on the startup routine which the program accepted but it still 
seized up with a spinning cursor. Some things still function, such as 
modifying the properties of a layer , Etc. But the screen is blank and 
nothing can be saved.


For some time I have noticed that loading a project file bogs down for 
a while and then would resume to completion. Now it bogs down and 
blows up. The key message seems to be unknown exception.


Some older project files do load successfully however...

Cheers . . . . .   Spring
Samsung Tab 4

On Jun 6, 2018 11:15 PM, "Phil Wyatt" > wrote:


Can you open a copy of the previous project file in something like
notepad and see if anything obvious can be fixed and or removed in
relation to the DXF layer?

*From:*Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org
] *On Behalf Of
*Springfield Harrison
*Sent:* Thursday, 7 June 2018 1:36 PM
*To:* qgis-user@lists.osgeo.org 
List
*Subject:* [Qgis-user] Unable to load project

Hello All,

Bad News.  I am unable to load a project that normally works with
no problems:

 1. QGIS 2.10.1, Windows 7.
 2. Project starts to load, loads many layers . . .
 3. halts loading "point Entity", a DXF file
 4. the DXF file was renamed to trigger the Handle Bad Layers service
 5. this was bypassed but project loading still fails to complete,
cursor spinner on constantly
 6. exiting with Save triggers "Unknown Exception"
 7. the project file is trashed to 0kb
 8. Exiting without Save is OK but no project can be loaded
 9. Restoring previous project file versions yields the same results
10. Loading some other projects works but may have cursor spinner

Any ideas what is going on here?  I have rebooted the computer.

Thanks very much . . . .

Cheers . . . . . Springfield Harrison



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Re: [Qgis-user] Unable to load project

[Springfield Harrison]

Hello Phil,

I would say less than 50 layers mostly shapefiles. I was hoping to be able
to tweak the project file but that appears to be out of the question except
possibly by a programmer.

Not sure what can be done next, waiting for expert ideas...

Cheers . . . . .   Spring
Samsung Tab 4
On Jun 7, 2018 12:29 AM, "Phil Wyatt"  wrote:

> When you say “loads many layers”…how many are we talking about – 20, 50,
> 250? Shape files, WMS, Raster, Vector? Unknown Exception I suspect is hard
> to diagnose, especially now on QGIS 2.10 and Windows 7 which are both
> pretty old.
>
>
>
>
>
> *From:* Springfield Harrison [mailto:stellar...@gmail.com]
> *Sent:* Thursday, 7 June 2018 4:28 PM
> *To:* Phil (The Geek) Wyatt
> *Cc:* qgis-user
> *Subject:* RE: [Qgis-user] Unable to load project
>
>
>
> hello Phil,
>
> I did open the project file in Word, 2033 pages, and found 13 instances
> referring to the dxf file. Hard to say if anything was wrong there, nothing
> obvious. At least to me. Some other research I did indicates that maybe
> there is an authentication problem, not sure just what that boils down to.
>
> I don't think the dxf file is the problem. I renamed it and bypassed it on
> the startup routine which the program accepted but it still seized up with
> a spinning cursor. Some things still function, such as modifying the
> properties of a layer , Etc. But the screen is blank and nothing can be
> saved.
>
> For some time I have noticed that loading a project file bogs down for a
> while and then would resume to completion. Now it bogs down and blows up.
> The key message seems to be unknown exception.
>
> Some older project files do load successfully however...
>
> Cheers . . . . .   Spring
> Samsung Tab 4
>
> On Jun 6, 2018 11:15 PM, "Phil Wyatt"  wrote:
>
> Can you open a copy of the previous project file in something like notepad
> and see if anything obvious can be fixed and or removed in relation to the
> DXF layer?
>
>
>
> *From:* Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] *On Behalf
> Of *Springfield Harrison
> *Sent:* Thursday, 7 June 2018 1:36 PM
> *To:* qgis-user@lists.osgeo.org List
> *Subject:* [Qgis-user] Unable to load project
>
>
>
> Hello All,
>
> Bad News.  I am unable to load a project that normally works with no
> problems:
>
>1. QGIS 2.10.1, Windows 7.
>2. Project starts to load, loads many layers . . .
>3. halts loading "point Entity", a DXF file
>4. the DXF file was renamed to trigger the Handle Bad Layers service
>5. this was bypassed but project loading still fails to complete,
>cursor spinner on constantly
>6. exiting with Save triggers "Unknown Exception"
>7. the project file is trashed to 0kb
>8. Exiting without Save is OK but no project can be loaded
>9. Restoring previous project file versions yields the same results
>10. Loading some other projects works but may have cursor spinner
>
> Any ideas what is going on here?  I have rebooted the computer.
>
> Thanks very much . . . .
>
>
>
> Cheers . . . . . Springfield Harrison
>
>
>
>
>
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Re: [Qgis-user] Unable to load project

[Phil Wyatt]

When you say “loads many layers”…how many are we talking about – 20, 50, 250? 
Shape files, WMS, Raster, Vector? Unknown Exception I suspect is hard to 
diagnose, especially now on QGIS 2.10 and Windows 7 which are both pretty old.

 

 

From: Springfield Harrison [mailto:stellar...@gmail.com] 
Sent: Thursday, 7 June 2018 4:28 PM
To: Phil (The Geek) Wyatt
Cc: qgis-user
Subject: RE: [Qgis-user] Unable to load project

 

hello Phil,

I did open the project file in Word, 2033 pages, and found 13 instances 
referring to the dxf file. Hard to say if anything was wrong there, nothing 
obvious. At least to me. Some other research I did indicates that maybe there 
is an authentication problem, not sure just what that boils down to.

I don't think the dxf file is the problem. I renamed it and bypassed it on the 
startup routine which the program accepted but it still seized up with a 
spinning cursor. Some things still function, such as modifying the properties 
of a layer , Etc. But the screen is blank and nothing can be saved.

For some time I have noticed that loading a project file bogs down for a while 
and then would resume to completion. Now it bogs down and blows up. The key 
message seems to be unknown exception.

Some older project files do load successfully however...

Cheers . . . . .   Spring
Samsung Tab 4

On Jun 6, 2018 11:15 PM, "Phil Wyatt"  wrote:

Can you open a copy of the previous project file in something like notepad and 
see if anything obvious can be fixed and or removed in relation to the DXF 
layer?

 

From: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] On Behalf Of 
Springfield Harrison
Sent: Thursday, 7 June 2018 1:36 PM
To: qgis-user@lists.osgeo.org List
Subject: [Qgis-user] Unable to load project

 

Hello All,

Bad News.  I am unable to load a project that normally works with no problems:

1.  QGIS 2.10.1, Windows 7.
2.  Project starts to load, loads many layers . . .
3.  halts loading "point Entity", a DXF file
4.  the DXF file was renamed to trigger the Handle Bad Layers service
5.  this was bypassed but project loading still fails to complete, cursor 
spinner on constantly
6.  exiting with Save triggers "Unknown Exception"
7.  the project file is trashed to 0kb
8.  Exiting without Save is OK but no project can be loaded
9.  Restoring previous project file versions yields the same results
10. Loading some other projects works but may have cursor spinner

Any ideas what is going on here?  I have rebooted the computer.

Thanks very much . . . .

 

Cheers . . . . . Springfield Harrison

 

 

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Re: [Qgis-user] Creating boundary map

[Nyall Dawson]

On 7 June 2018 at 16:37, PARESH CHAUKHANDE  wrote:
> Hello,
>  I want to create a boundary layer on a map in QGIS 3.0.3 with Mac OS.

Fantastic! You've chosen the right software to do this in.

Nyall

(If you've got a specific question, better ask it so we know how to help!)
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Re: [Qgis-user] Unable to load project

[Phil Wyatt]

Can you open a copy of the previous project file in something like notepad
and see if anything obvious can be fixed and or removed in relation to the
DXF layer?

 

From: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] On Behalf Of
Springfield Harrison
Sent: Thursday, 7 June 2018 1:36 PM
To: qgis-user@lists.osgeo.org List
Subject: [Qgis-user] Unable to load project

 

Hello All,

Bad News.  I am unable to load a project that normally works with no
problems:

1.  QGIS 2.10.1, Windows 7.
2.  Project starts to load, loads many layers . . .
3.  halts loading "point Entity", a DXF file
4.  the DXF file was renamed to trigger the Handle Bad Layers service
5.  this was bypassed but project loading still fails to complete,
cursor spinner on constantly
6.  exiting with Save triggers "Unknown Exception"
7.  the project file is trashed to 0kb
8.  Exiting without Save is OK but no project can be loaded
9.  Restoring previous project file versions yields the same results
10. Loading some other projects works but may have cursor spinner

Any ideas what is going on here?  I have rebooted the computer.

Thanks very much . . . .

 

Cheers . . . . . Springfield Harrison

 

 

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[Qgis-user] Creating boundary map

[PARESH CHAUKHANDE]

Hello,
 I want to create a boundary layer on a map in QGIS 3.0.3 with Mac OS.  
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Re: [Qgis-user] Unable to load project

[Springfield Harrison]

hello Phil,

I did open the project file in Word, 2033 pages, and found 13 instances
referring to the dxf file. Hard to say if anything was wrong there, nothing
obvious. At least to me. Some other research I did indicates that maybe
there is an authentication problem, not sure just what that boils down to.

I don't think the dxf file is the problem. I renamed it and bypassed it on
the startup routine which the program accepted but it still seized up with
a spinning cursor. Some things still function, such as modifying the
properties of a layer , Etc. But the screen is blank and nothing can be
saved.

For some time I have noticed that loading a project file bogs down for a
while and then would resume to completion. Now it bogs down and blows up.
The key message seems to be unknown exception.

Some older project files do load successfully however...

Cheers . . . . .   Spring
Samsung Tab 4
On Jun 6, 2018 11:15 PM, "Phil Wyatt"  wrote:

> Can you open a copy of the previous project file in something like notepad
> and see if anything obvious can be fixed and or removed in relation to the
> DXF layer?
>
>
>
> *From:* Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] *On Behalf
> Of *Springfield Harrison
> *Sent:* Thursday, 7 June 2018 1:36 PM
> *To:* qgis-user@lists.osgeo.org List
> *Subject:* [Qgis-user] Unable to load project
>
>
>
> Hello All,
>
> Bad News.  I am unable to load a project that normally works with no
> problems:
>
>1. QGIS 2.10.1, Windows 7.
>2. Project starts to load, loads many layers . . .
>3. halts loading "point Entity", a DXF file
>4. the DXF file was renamed to trigger the Handle Bad Layers service
>5. this was bypassed but project loading still fails to complete,
>cursor spinner on constantly
>6. exiting with Save triggers "Unknown Exception"
>7. the project file is trashed to 0kb
>8. Exiting without Save is OK but no project can be loaded
>9. Restoring previous project file versions yields the same results
>10. Loading some other projects works but may have cursor spinner
>
> Any ideas what is going on here?  I have rebooted the computer.
>
> Thanks very much . . . .
>
>
>
> Cheers . . . . . Springfield Harrison
>
>
>
>
>
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