Re: [Qgis-user] problem when opening projects in open, instance

[Garth Fletcher via QGIS-User]

To further clarify:
I transferred both .qgz files from a USB disk to the user's Documents 
directory.

One opened, the other gav the "Unable to unzip file..." error.
So not a network or shared volume issue.

I did not know enough about Windows to try unzipping the .qgz file :-(

Back on the Mac system, both .gqz files on the USB disk opened normally.

So, it seems to me that the possibilities are:
 1) copying error in transferring from USB disk to User's home volume - 
unlikely

 2) .ZIP format issue between Mac OSX and Windows

I'll report further after I can test .qgs format on the Windows system.

Garth Fletcher

On 6/20/24 10:08 AM, Garth Fletcher  wrote:

Just ran into same problem.
I created 2 separate .qgz projects using QGIS 3.34.7 under Mac OSX 10.13.6

I transferred the qgz files to a Windows installation of QGIS 3.34.7 and
only one would open.
The other resulted in the "Unable to unzip file..." error message.

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Re: [Qgis-user] problem when opening projects in open instance

[Garth Fletcher via QGIS-User]

Just ran into same problem.
I created 2 separate .qgz projects using QGIS 3.34.7 under Mac OSX 10.13.6

I transferred the qgz files to a Windows installation of QGIS 3.34.7 and 
only one would open.

The other resulted in the "Unable to unzip file..." error message.

Today I will go back to the site to see the same project saved as .qgs 
will open.

My guess is some incompatibility in ZIP handling...

Garth Fletcher

On 6/20/24 Simon Dietmann  wrote:

Dear list,

since several weeks I can?t open existing .qgz files from inside an open
  QGIS instance when they are located on a network drive. The error
message that appears is "Unable to unzip file: ..."
There?s no problem when the .qgz is on a local drive or when I open it
from the windows explorer.

I?m using latest QGIS Desktop 3.34.7 on  Windows 11.

Does anyone know about this problem? Any idea for a solution of this
issue will be appreciated. In case you think it is a bug, I will post a
report.


--
Garth Fletcher

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Re: [Qgis-user] QGIS-User Digest, Vol 218, Issue 9

[Garth Fletcher via QGIS-User]

I've had good luck with
  hiding the original folder/directory containing the files I'm moving 
(or just moving it wholesale)

  starting up the QGIS project
  when it shows the list of files it cannot find
    I select one and use Browse to find that file in its new location
   followed by Apply Changes

This generally results in it finding all the other missing files that 
share the same directory...


I'm assuming that Browse updates a "Path" that is then automatically 
used to check for other missing files.


Also, it **may** depend on QGIS being set to use
  Options - General > Project Files > Default paths: Relative rather 
than Absolute.

I always use Relative and have not checked the effect of Absolute.

Of course, the file names have to be UNchanged, but it seems to work 
very well when I relocate whole directories.



On 4/4/24 Tony Shepherd \(FarmMaps NZ\)"  wrote:

I am sure I am not the first to ponder how to deal with this.  I have loads,
thousands likely, of project files in a series of folders and subfolders.  I
need to move those files and folders to a new location to enable other staff
to use the project files and their associated shp files, geo packages,
rasters etc.
...


--
Garth Fletcher

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Re: [Qgis-user] Apple v QGIS 3.28 LTR

[Garth Fletcher via QGIS-User]

Hi Alice,

Hold Control key down,  click on the downloaded QGIS app, and choose "Open"
then give permission to run it

This only has to be done the first time, thereafter MacOS remembers that 
you authorized that specific program and will start it without 
quibbling. However, if you download a new QGIS you will be required to 
do the Control-click followed by Open to authorize that version.


You are running into Apple's security which balks, unless specifically 
OKed by you, programs that aren't signed by Apple or an officially 
authorized developer...


Garth Fletcher

On 2/20/24 1:44 PM, qgis-user-requ...@lists.osgeo.org wrote:

Looking for some urgent help!
I am desperately trying to get a QGIS project done this week so need
help to get it back asap!!

Was having issues with QGIS with unexpected crashes on my iMac so
decided to try and do an update and install the latest long term release
  version from the website (3.28).
However, it gives this error (attached) whenever I try and open the
installed software.
?Apple cannot open QGIS-LTR because it cannot check it for malicious
software
This software needs to be updated
Contact the developer for more information?.

My IT tech support team have tried in vain to uninstall and re-install
it for me, with the same results.

Please let me know how I can overcome this error and get QGIS back on my
  iMac.


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Re: [Qgis-user] How to download QGIS for MacOs Ventura 13.5.2

[Garth Fletcher via QGIS-User]

Hi Andrea,

re "/macOS High Sierra (10.13) or newer is required./"

In my experience, QGIS 3.32.x does NOT fully work on macOS High Sierra 
(10.13)
The problem is with some of the processes and the library routines they 
call.


For example, QGIS 3.32.0 cannot be used with WBT 2.2, because of "Symbol 
not found: __cg_jpeg_resync_to_restart", but QGIS 3.30.3 works correctly.


macOS High Sierra (10.13) is still used by many who depend on somewhat 
older machines.



Re the rest of the wording:

it suggests (to me) that the security issue begins with Catalina 
(10.15); however it is already present in 10.13 (and earlier).


System Preferences > Privacy & Security has long offered choices of allowing
 Apple software only, or
  " Apple + signed software.
So even signed software can be blocked.

So the instructions should apply to all macOS whenever QGIS refuses to 
launch.


Also, it should make clear that the QGIS app itself is what is 
control-clicked.

New users might think it is the .dmg icon...

The suggested changes seem an improvement, except for the "For Users of 
MacOS Catalina and above:" title.


What about:
*For Users of MacOS:*
After installing QGIS, the first launch attempt may fail due to security 
protections.
To enable QGIS control-click on its Icon in your Applications folder and 
select Open in the context menu.
A confirmation dialog will display where you can give permission for 
QGIS to run.

This only has to be done once.

Garth Fletcher

Message: 4

Date: Thu, 2 Nov 2023 18:34:29 +0100
From: Andrea Giudiceandrea 
To: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] How to download QGIS for MacOs Ventura 13.5.2
Message-ID: 
Content-Type: text/plain; charset=UTF-8; format=flowed

Hi Garth,
do you think the instructions available on qgis.org are OK or should
them be improved?


macOS High Sierra (10.13) or newer is required. QGIS is not yet
notarized as required by macOS Catalina (10.15) security rules. On first
launch, please control-click on the icon and choose Open from the
context menu, after which a confirmation dialog is shown and you need to
click the Open button.


Please have a look at https://github.com/qgis/QGIS-Website/issues/1195
in which there is a proposal to modify the instructions on qgis.org.

Best regards.

Andrea



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Re: [Qgis-user] How to download QGIS for MacOs Ventura 13.5.2

[Garth Fletcher via QGIS-User]

Hello Isabel,

As a security measure Mac OS refuses to run downloaded programs unless 
they are recognized ("signed") as an Apple product or an Apple 
registered product.


However, if you trust the download source, you can tell Mac OS to accept 
a downloaded program.


Hold the Control key down and click on the program - a menu will pop-up 
in which you select "Open".

You will then be asked to confirm permission.

Alternatively, right after you tried to run the program and got the 
"unable to open..." message you can use "System Preferences" and choose 
"Security & Privacy" which may offer you an option to permit the program 
it just refused to run.


You only have to do either once, thereafter Mac OS knows to trust that 
specific program - but if you download an update you will again have to 
authorize that new version.


The normal download sequence is
  1) download the .dmg,
  2) double click on the .dmg which should open a window showing the 
QGIS app and an "Applications" folder
  3) drag QGIS to "Applications" - this will copy QGIS into your main 
Applications folder

  4) control-click on QGIS in your Applications folder and chose "Open"
  5) give permission for it to be run
Thereafter you can treat it as any other trusted program...

Cordially,
Garth Fletcher

On 11/1/23 11:41 AM, Isabel Ittig-Boo wrote:

Hi,

Thanks for your attention and help.

The « error » text is the following:

« Unable to open “QGIS” as Apple cannot verify that it does not 
contain malware.

This software needs to be updated. Contact the developer to learn more.
Safari downloaded this file today at 16:14. »

« Is the error when you double-click on the download .dmg file? »* I 
can open it.*

*
*
After downloading the .dmg file, I get the logo on the screen:image1.jpeg
*
*


« Or is the error when you try to run QGIS? » *Yes, I think so* (see 
photo, I cannot open it).


image0.jpeg

Do you have any idea what the problem is?

Thank you.

Best regards

Isabel
Switzerland


Le 25 oct. 2023 à 23:43, Garth Fletcher  a écrit :

Please provide exact text pf tje error message and when it happens.
Does the file download without errors?
Is the error when you double-click on the downloaded .dmg file?
Is the error after the .dmg file opens?
Or is the error when you try to run QGIS?

Cordially,

--
Garth Fletcher



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Re: [Qgis-user] opening .sid files in QGIS

[Garth Fletcher via QGIS-User]

I have routinely opened .SID color orthophoto files for several years 
with QGIS running on a Mac.
Currently using QGIS 3.30 under Mac OS X 10.13; I started using QGIS 
back in the 2.14 days, ~2016.


I have a vague recollection of having to load a MrSID SDK, perhaps 4 or 
5 years ago.
Perhaps that installation has been persistent since I haven't had to do 
anything MrSID related since as I updated QGIS.

If indeed a MrSID is needed, it can be found at


--
Garth Fletcher

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Re: [Qgis-user] QGIS-User Digest, Vol 211, Issue 21

[Garth Fletcher via QGIS-User]

I've run into a similar problem (possibly the same) - that nothing shows 
because the layed is panned far away from screen center. Something to do 
with the Project not correctly storing the canvas center coords...


select one of your layers and then  View >> Zoom to Layer(s)

That will adjust Zoom and Pan to center and display the layer in the 
display...
Best to select one of your layers that only contains stuff from your 
Area of Interest
if you select some huge background layer then you will be zoomed far 
enough out to display the entire layer...


Michael Edward McNeil  wrote:

...
A secondary issue, by the way, is that I apparently can't see the data after I 
save my QGIS project, close and re-enter the app. After re-entering QGIS the 
Layers pane shows all the layers, all properly check-marked for visibility, 
just like before, but nothing shows up in the display window ? it's totally 
blank white. So? I'm surviving by never (or seldom ? then reloading the data) 
leaving the app. But, what's going on?

I'm running QGIS v. 3.32.2-Lima under MacOS 12.6.8.


--
Garth Fletcher,

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Re: [Qgis-user] Installing on MacOS

[Garth Fletcher via QGIS-User]

If you could upgrade to OS X 10.13 (High Sierra) then you could run QGIS 
3.30.
That is what I have been using extensively under OS X 10.13.6 running on 
my Mac mini.


However, it appears that QGIS 3.32 requires at least OS X 10.14

Lester Anderson via QGIS-User wrote:
Quick query. Which version of QGIS is compatible with MacOS Sierra 
10.12.6 


--
Garth Fletcher

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Re: [Qgis-user] .csv table

[Garth Fletcher via QGIS-User]

Burt Grabowski wrote:

?Dear all, first of all I want to quickly introduce myself. My name is 
Burt and I am a student of economics in Austria. I have a special 
request, because I am an absolute beginner in QGIS, but have no time 
left. I am writing on my diploma thesis and my supervisor wants to 
have some cards in it. I spent a whole week, but I am not able to 
connect a simple .csv file with the shape file. I would probably need 
10 to 15 minutes, so who would please have some time left for me for a 
zoom call, so that I can create some tables for my diploma thesis? I 
would like to create them over the weekend, because my deadline is 
getting closer and I cannot find one description of my simple problem. 


Nicolas Cadieux has replied many times via QGIS-User Digest but perhaps you did 
not see his replies and offers of help.

Assuming you have a shape file containing some objects, and
you have a .csv file containing lines which should connect to those objects

You need to have (or create) a field in the .CSV file whose contents matches a 
field in the shape file.
It could be simply a number, or a string.  The important thing is that the 
content of the field in the shape file will match the content of the field in 
the .csv file.

For example if the Shape file contains a field ShpTag
and the .csv file contain a field named CsvTag of the same type

Load the .csv file as a layer using the Data Manager's  Delimited text option
  {note: if the 1st line in the .csv contains column names, they will be used 
as field names}

You then open the shape layer dialog and use the "join" pane to
 a) identify the .csv file layer
 b) identify the field in the .csv file (CsvTag)
 c) identify the field in the shape file (ShpTag)

Each object in the shape file will then have appended to its attributes the 
.csv contents from the line in the .csv file in which the contents of ShpTag 
matched the contents of CsvTag.


Very easy and very powerful.

Hope the above helps more than it confuses...

--
Garth Fletcher

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[Qgis-user] Subject: CSV Table not recognised

[Garth Fletcher via QGIS-User]

I'm using QGIS 3.30.2 under Mac OS X 10.13.6 (High Sierra) and .CSV 
files are working perfectly...


Maybe check the settings in the Data Source Manager - Delimited Text to 
make sure it is expecting an normal CSV file.  One can set it to accept 
a variety of other text formats... Also that you've set the appropriate 
degree format (DMS vs decimal) if it contains geometry.


Humpphrey wrote:

I uploaded a database of lat and longs to a map project the first few times
it worked now the programme does not recognise the data.  It accepts the
table but it gives a feature count of 0.  Also no labels or symbologies
appear.


--
Garth Fletcher

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Re: [Qgis-user] QGIS not installing properly

[Garth Fletcher via QGIS-User]

That would be an excellent improvement as there have been frequent 
questions about Mac OS X "refusing" to run QGIS (an other wonderful 
applications).


There is an Apple Support doc on this topic:


On 2/9/23 4:18 PM, Alessandro Pasotti wrote:

I am wondering if we (the QGS community) should put this information
somewhere to make it easily findable. We are currently in the process
of redesigning the QGIS website (which includes links to the downloads
for various operating systems).


--
Garth Fletcher

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Re: [Qgis-user] QGIS not installing properly

[Garth Fletcher via QGIS-User]

jessica swan wrote:

I am wanting to use QGIS for a project,
but it will not open on my laptop because "this device cannot scan QGIS for
malware". I have a MacBook Air from 2016 - its software should be updated
enough to run the QGIS system, but it seems that something is wrong. Could
I please get some assistance on the issue?


A good problem report should include the OS X version you are using.
I'm guessing that on a 2016 Mac you may be using OS X 10.13 (High Sierra) or 
possibly 10.14 or 10.15.

By default these, and later versions such as OS X 11, refuse to run programs that are not 
"officially signed", UNLESS you give them permission to do so.

You only have to give permission once (for a given app); there are 2 ways:
1) control-click on the application and select Open, or
2) right after having plain clicked and gotten the refusal, go to
 Apple > System Preferences > Security & Privacy
   where you may see a message about the rejection and an offer to authorize 
the rejected app

I always use #1.  As I say, you only have to do it once.  Thereafter single 
clicking on the app, or one of its files, will start up QGIS.

By the way, while in Security & Privacy / General you will see:
  Allow apps downloaded from:
( ) App Store
(o) App Store and indentified developers
That is usually set for the 2nd choice, but might have been changed to the first
Neither setting allows UNsigned apps, unless you give permission as outlined 
above for each UNsigned app you want to run.

QGIS runs beautifully on Macs.  I'm using a 2011 Mac mini with OS X 10.13 for 
making maps with many hundreds of layers and many many GB of rasters, including 
LIDAR based DEMs with 1.5 foot resolution and orthophotography with 0.5 foot 
resolution.

Cordially,

--
Garth Fletcher

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Re: [Qgis-user] Line in QGIS I can't get rid of

[Garth Fletcher via Qgis-user]

Look in Edit >> Annotations

I struggled for days on an unremovable polygon until someone suggested 
"annotations" :-)


--
Garth Fletcher

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Re: [Qgis-user] RAM and processing speed requirements for QGIS (Helena Farrell)

[Garth Fletcher via Qgis-user]

Helena Farrell wrote:

Hello, I am seeking input on whether my 7 year old Mac with 8GB RAM and a
2.7gigahertz processor is likely to perform poorly at running QGIS. Since
these are like the bare minimum in terms of power, and I assume QGIS is a
data-heavy program, I may need to invest in a new computer. Anyone have
advice on RAM and processing speed specifications  that I should look for
and whether a PC be better than a Mac for running this program?
I am running QGIS on a 2012 Mac Mini (2.3 GHz Intel Core i7) with 8 GB 
RAM running OS X 10.13.6 (High Sierra).


I use multiple vector layers plus a buildings layer, DEM, areal 
photography (color 1 foot res) covering a 30 square mile area.


Performance seems excellent.

I have replaced my hard drive with SSD which may be making a significant 
difference.


I recommend trying QGIS on your old Mac - you may be surprised...

Cordially,
Garth Fletcher


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