attributeDisplayName(attributeIndex),
while they say editorWidgetV2Config(fieldIdx). What's the difference between
attributeIndex and fieldIdx?
Thanks
Tom
Tom Chadwin, UK National Parks Portal Manager
Telephone: 01434 611511 Mob: 07881 109617
Web:
www.northumberlandnationalpark.org.ukhttp
?
Tom
-Original Message-
From: Matthias Kuhn [mailto:matthias.k...@gmx.ch]
Sent: 23 June 2014 13:55
To: Tom Chadwin; qgis-developer@lists.osgeo.org
Subject: Re: [Qgis-developer] Field visibility in Python
Hi Tom,
The following example should should print the type for all widgets
:46
To: Tom Chadwin; qgis-developer@lists.osgeo.org
Subject: Re: [Qgis-developer] Field visibility in Python
Hi Tom,
That works starting from 2.3 (master) / 2.4 (release/stable)
For 2.2 you will have to work with
i.editType( fields.indexFromName(field) )
This will continue to work
I need to reproject rasters and change their file type in a QGIS plugin. Can I
do this using the QGIS API? If not, I can do this externally with
gdal_translate, but how can I determine the path to gdal_translate in Python?
Thanks
Tom
Tom Chadwin, UK National Parks Portal Manager
Telephone
plugin suitable for working with it in
plugin development? An API?
Tom Chadwin, UK National Parks Portal Manager
Telephone: 01434 611511 Mob: 07881 109617
Web:
www.northumberlandnationalpark.org.ukhttp://www.northumberlandnationalpark.org.uk/
IMPORTANT NOTICE - Disclaimer - This communication
Hello
Is there either a QT/native PyQgis method for saving the settings of a plugin
dialog so that they persist between application restarts? Or is there a
recommended/established best practice way of doing so?
Thanks
Tom
Tom Chadwin, UK National Parks Portal Manager
Telephone: 01434 611511
().destinationCrs()
Is that correct? If so (as a QGIS plugin and Python beginner) what is the best
way to handle the deprecation and maintain backwards compatibility, given that
QgsMapCanvas.mapRenderer() is only in 2.4+?
Thanks
Tom
Tom Chadwin, UK National Parks Portal Manager
Telephone: 01434 611511
which Leaflet can understand.
Thanks
Tom
Tom Chadwin, UK National Parks Portal Manager
Telephone: 01434 611511 Mob: 07881 109617
Web:
www.northumberlandnationalpark.org.ukhttp://www.northumberlandnationalpark.org.uk/
IMPORTANT NOTICE - Disclaimer - This communication is from Northumberland
Found it:
layer.rendererV2().classAttribute()
Thanks
Tom
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Hello
In 2.4, when writing geoJSON, QgsVectorFileWriter.writeAsVectorFormat() created
Point features. In 2.6, this seems to have changed to Multipoint. Is this
intentional? If so, why?
Thanks
Tom
Tom Chadwin, UK National Parks Portal Manager
Telephone: 01434 611511 Mob: 07881 109617
Web
Hello all
I'm trying to build labelling into qgis2leaf. How do I retrieve the name of
the field used as a layer's label? I've tried QgsLabel::labelField ( int
attr ), but I don't understand what the argument attr is.
Thanks
Tom
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Can anyone help with this?
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QgsLabel(layer.pendingFields()).fields()[0].name()
That doesn't work - it gives the field at position 0, not the labelling
field.
layer.customProperty(labeling/fieldName)
But this does work perfectly. Thank you so much.
Tom
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Noted. Thanks, Nathan.
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The official source for Ordnance Survey SLDs is here:
http://www.ordnancesurvey.co.uk/business-and-government/help-and-support/products/styled-layer-descriptors.html
Their licence
(http://www.ordnancesurvey.co.uk/docs/licences/stylesheet-licence-v2.pdf)
contains the following:
You may only
Thanks, Riccardo, for bringing this discussion to my attention. I think we
need to proceed with caution, considering the following issues:
1. Bigger is not always better - specialized tools often yield better
results than big ones with every option under the sun bloating the code and
confusing
it, and uploaded a new version.
I deleted the version with the major bug. Is that correct? Or should I leave
all versions up there even if faulty? All versions are on GitHub.
Thanks
Tom
Tom Chadwin, ICT Manager
Telephone: 01434 611530 Mob:
Web:
www.northumberlandnationalpark.org.ukhttp
do next?
Thanks
Tom
Tom Chadwin, ICT Manager
Telephone: 01434 611530 Mob:
Web:
www.northumberlandnationalpark.org.ukhttp://www.northumberlandnationalpark.org.uk/
IMPORTANT NOTICE - Disclaimer - This communication is from Northumberland
National Park Authority (NNPA).The Authority’s head
Many thanks - I'll get rid of everything but the latest experimental.
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I'm implementing rule-based rendering in qgis2leaf. I know I can get the
filterExpressions with:
qgis.utils.iface.mapCanvas().layers().rendererV2().rootRule().children().filterExpression()
However, filterExpressions are in SQL-like syntax. I need to transform
these into JavaScript:
QGIS: name
Hi Nathan
Don't use regex. You are in for a world of pain if you go that way, and
not the kind of pain you feel good about after.
Akin to:
http://stackoverflow.com/questions/1732348/regex-match-open-tags-except-xhtml-self-contained-tags
Many thanks for looking into it – very much
How do I save a layer as a rendered image? qgis2leaf exports rasters, but
they are unrendered, and hence sometimes do not display correctly, if at
all. How do I Save raster layer as... Rendered image via Python?
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OK, so I have found the documentation which says I should use QSettings(),
which is clear enough, and I can read settings in fine. However, if I want
my plugin settings to persist transparently (ie the user should not have to
save the settings explicitly), where in the plugin should I put all my
In Python, is it possible to retrieve the value for an HTML map tip:
Layer Properties Display Map tip display text HTML
I've been rooting around in the API, but haven't managed to find it.
Thanks
Tom
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I've ended up connecting the QSettings() function to the parent QTreeWidget's
itemChanged signal. This works for text and checkboxes, but does not seem to
emit for changing the selected item in a combobox. Does anyone know what
signal is emitted under these circumstances?
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other point. Any
ideas?
Original message
From: Richard Duivenvoorde [via OSGeo.org]
ml-node+s1560n5209443...@n6.nabble.com
Date: 05/06/2015 16:08 (GMT+00:00)
To: Tom Chadwin tom.chad...@nnpa.org.uk
Subject: Re: Persist plugin GUI dialog settings
On 05-06-15 16:34, Tom Chadwin
Perfect - I've implemented it as described. Thanks for the help, Richard.
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I've got the build environment up now, I think - many thanks, all. However,
does anyone know how I can get rid of the following test fail:
QPixmap: Must construct a QApplication before a QPaintDevice
I don't see QApplication instantiated anywhere. I'm not sure how to get past
this, since the
So Google has told me repeatedly. My issues are:
- I have not previously done this because the plugin works fine in QGIS, and
this issue has only shown up in tests
- I don't know how (or where) to instantiate QApplication (or
QgsApplication?)
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OSGeo.org]
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Date: 22/06/2015 19:37 (GMT+00:00)
To: Tom Chadwin tom.chad...@nnpa.org.uk
Subject: Re: Using TravisCI integration in Github for QGIS Python plugin
Have a look to the Travis config file in inasafe :
https://github.com/AIFDR/inasafe/blob/develop/.travis.yml
I've got a bit further with this, but have an embarrassingly basic question.
I'm using Tim's Plugin Builder's run-env-linux.sh, but the default QGIS path
doesn't seem to match where Travis installs QGIS to - is Travis running
Ubuntu? Can anyone tell me what QGIS path I should pass to
Surely if a layer is unchecked in the legend, none of its features should
show, regardless of symbology or renderer.
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I suspect I'm not going to get this to work. I hit the problem that my plugin
's code used iface, which was not recognised. I managed to inject the dummy
iface replacement created in the qgis_get_app () function mentioned above.
However, next the code calls:
```python
qgis2web saves its settings via QSettings(). However, it currently simply
saves a load of ungrouped individual settings, which doesn't seem sensible
(and potentially could overwrite non-qgis2web settings). Is there a
preferred QSettings() group convention for plugins, or should I just use
Ah: brushStyle(). Got it. Thanks.
Tom
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I need to get the Fill style of a simple fill symbol layer, but cannot find
that in the API docs. Does it exist? I need it to fix a reported bug in
qgis2web:
https://github.com/tomchadwin/qgis2web/issues/10
Specifically, I need to determine if a simple fill symbol layer has fill
style No Brush.
Thanks very much, Martin. Looks like I have a lot to learn (unittest/nose, as
well as Travis itself).
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If it were my budget, then yes, I would consider it, so long as enough others
did so as well, to get the hours required for it to have an effect. That
figure is roughly the support for 1 year's support for a proprietary GIS for
a single user (very roughly, from memory), so I would hope that many
That is exactly why we have introduced long-term releases (LTR) for
QGIS - for organizations that just need a stable QGIS for their work
But the only .0 LTR so far (2.8) was not stable.
without having to worry about instabilities, testing and reporting bugs
I understand that. I was simply
If the answer is that there is no way that the 2.8.0 and 2.10.0 bugs would
ever have come to light before release, then sure, I accept the argument.
However, Nyall says that one of the bugs was apparent as a test failure.
Perhaps the best thing to do would have been to acknowledge that the flood
I do accept all your points. I am also probably confusing LTR with stable.
Just because a .0 is LTR should not define it as more stable than a non-LTR
.0.
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After lots of help and contributions from Akbar, I think this is now working.
If anyone else would find the information useful, see:
https://github.com/tomchadwin/qgis2web/issues/72
and
https://github.com/tomchadwin/qgis2web/tree/LayerTree-API
Many thanks, Akbar and everyone who has helped out
Any instance of qgis_get_app() outside of /test is only my attempts to get
his testing working, so I'll dig out the commit which put it there and
revert it. I'll have a look at your guidance on implementing iface, but if
you are able and interested to have a look as well, then of course I'd be
I'm sure someone has this in mind, but the countdowns on the QGIS home page
to next feature freeze and release are both on 0 since we passed the release
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Has anyone set up TravisCI to test commits in a QGIS Python plugin Github
repo? Can anyone give me some help?
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This post is in no way a criticism of any of the QGIS team and their
monumental efforts or their fabulous product. However, I thought someone
should question how successful the four-monthly release schedule is. 2.8
immediately needed 2.8.1, and there seems to be the chance that 2.10 is
immediately
My point, if my understanding and memory of the last few months is correct,
is that these two .1 releases have been required (2.8.1) or identified as
required (2.10.1), before each .0 version has been fully released. My
argument is that that is not the same as the normal caution about .0
versions,
When iterating through layers, how can I include vectors layers, exclude
layers without geometry, and include rasters? At the moment, I have:
try:
if layer.type() == 0:
testDump = layer.rendererV2().dump()
code goes here
except:
pass
This seems very ugly to me...
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Sorry: inches PER map unit, or map unit / inch.
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Paolo always does question new plugins if they duplicate. Is that not enough?
It's the reason my plugin was created. Our is there perhaps a historical
issue?
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The plugin mailing list should be equivalent to this list and the users one.
Additional integration into the plugins site would be an extra, but not
required.
I don't think that occasional emails to plugin devs via the emails
associated in the repo would be unreasonable. Perhaps three or four
No, I meant last time, 2.10.
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+1. I've told the developer of a plugin we commissioned that 2.10 was out,
but his interpretation of the website was that it was not yet launched.
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> What would then be the difference between 2.14 and a 2.12 LTR?
2.14LTR is what the roadmap says. 2.12LTR isn't.
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> QT decided to abandon QWebView and QWebWidget
Does that mean I've got a real problem with the preview window in qgis2web
when QGIS goes to Qt5?
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Which plugin?
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I think we should all respect a view held by someone who has voluntarily
created a plugin. My opinion, as a UK data protection officer, is that this
view is in line with data protection legislation. When I submitted a plugin,
I was not told that my email address would be used for bulk mailing.
As discussed before, can we not just have a plugins list like this one?
Voluntary to join, so potentially compliant with data protection
legislation.
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I can only speak about UK legislation. That only allows the use of collected
personal data for purposes explicitly stated at the time of collection. I
don't believe such permission is sought when plugins are submitted. Are
there any terms and conditions which bind plugin authors?
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Respect to whoever answered as follows:
*In your opinion the QGIS project would be better if...*
Clone Anita Graser, she is amazing
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That's a lot of plugins - over 150, minus a handful of deprecated ones.
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The potential downside is fragmentation of the users across too many lists -
specifically, would we lose some subscribers to the dev list? Anyway, I'm in
no position to judge that. I know I would find a plugin list useful, if
others used it, and it would be useful for the 3.0 migration.
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How about a qgis-plugins mailing list? I don't get great responses to PyQGIS
questions on Stack Exchange, and this dev list should really be for core
development. I certainly don't feel completely comfortable asking plugin
questions here. A dedicated list would be the place for info and support on
Can I retrieve the project's Selection colour (Project > Project
Properties... > General > General settings > Selection color) via Python?
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Apologies - found it:
iface.mapCanvas().mapSettings().selectionColor().name()
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To implement scale-dependent visibility in qgis2web's OL3 output, I need to
convert QGIS's layer.minimumScale() to ol.layer.Vector's minResolution. How?
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What is the default canvas size when QGIS is invoked in Travis - in other
words, when QGIS is run for the first time after installation on Ubuntu? I
have tests for qgis2web, but if I do:
mapCanvas().setExtent(layer.extent())
I get different values for the bounds of the canvas extent in the
I can't get this to work. I tried adding a canvas resize in the test script,
and also doing the same from my workstation Python console, but it didn't
change the test result bounds - they are still different to the bounds of my
local instance.
I then noticed that the dummy iface script (taken
I've implemented very basic Travis testing for the plugin qgis2web, and it's
been working very well, catching code errors which result in Python errors.
However, I'm now trying to expand the suite of tests to test the plugin
against different data. The problem I have is that I now cannot get
Hi Matthias
This is the very early stages of implementing unittest. In time, I will test
for expected results using assert methods. At the moment, though, all I want
this to achieve is to catch Python errors, to prevent my making releases
which crash. This is what I was doing before, and it
Hi Matthias
Firstly, I'm not aware of a current segfault in the tests, so I'll keep an
eye out for that.
Yes, I am talking about exceptions thrown by Python. The deliberate error I
have introduced is in the main function called when a map is exported in
Leaflet format (ie not in Openlayers3).
I'm having difficulty getting Travis to unittest qgis2web. I've asked for
help on GIS.SE, but have had no takers:
http://gis.stackexchange.com/questions/162579/pyqgis-reference-to-qgis-plugin-ui-in-travis-unittest
Can anyone here help?
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Congratulations indeed, Anita!
Tom
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I agree with Matthias. If we want to get the news to people who are not
already getting it, it needs to be there on the splash screen, not a
secondary tab. Surely there is plenty of space for recent projects and news
alongside one another, with a little redesigning? The recent projects
currently
Confirmed on 2.10.1 Win7 x64
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No crash here: 2.10.1 Win7x64.
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I certainly use "Display as" for human-friendly names.
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Hi Salvatore
Following the steps in Pedro's ticket does *not* crash for me. However, I'll
ask some questions to clarify:
1. I did not select "Virtual field", as that was not mentioned in the ticket
2. I only gave a static value for the contents o the field, rather than an
expression - does this
Many apologies - you are right. I change "Layer name", and couldn't
understand what Display as was meant to be: a non-editable text field which
mirrors Layer name? Why?
Tom
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If the featured flag is thought useful, how about pulling it through to the
plugin manager?
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Yes, I stripped those out as part of the simplification I mentioned above.
I'll try again and see if I have any more joy.
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Plugins have a single field for author and author email. What is the correct
way to specify multiple authors? Comma separated in both fields (name and
email)? Since a mailto: link is generated on the plugin page in the repo, I
don't think that would work. Something else?
By the way, on
Thanks - all sorted. However, I do think the text that emails will not be
displayed on the website is not correct if they will be when a user is
logged in.
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Apologies if this is too off-topic, but with Travis releasing their new
Google Compute Engine infrastructure, I've done some work on my Travis
setup, including moving from Ubuntu Precise to Trusty. Briefly, the issues I
encountered under Trusty as opposed to Precise were:
- xvfb now has to be
I should also have mentioned that Travis are also migrating "Precise with
sudo" jobs over to Google Compute Engine (GCE) this week. This should lower
test times, but watch out for any resulting differences in behaviour. If you
want to stick with Precise, but force your tests onto GCE immediately,
Apologies - my instructions for forcing GCE were correct only for
Precise-only Travis configs. The QGIS config is both Linux and OSX. See this
page for instructions to force GCE for multiple os: configs:
https://gist.github.com/meatballhat/d0c8aab9e3bd8a8bcacd#file-00-intro-md
I'm not familiar
I've only experience one such delay. Does this need to be reverted?
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Forgive off-topic, but is the Travis website down at the mo? It's doing
builds and sending result email fine, but I can't browse to travis-ci.org.
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Ah. Site has started failing in Internet Explorer. Fine in Chrome/Win.
Apologies for noise.
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OK. And the OSX build was unaffected by the top-level selection of Precise?
Seems not, but I have no experience of reading OSX test output.
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> we could use a different platform for Qt5 tests
...and Python 3?
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Update: the QGIS SVGs work in Leaflet. Will have to investigate further. Any
insights welcome.
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I've released a first beta of qgis2web version 1.0.0. I've made the jump to
v1 because all features are available for both OL3 and Leaflet exports.
Recent major additions include support for multiple projections in OL3,
along with geocode, geolocate, and measure. Leaflet now uses qgis2web
That absolutely worked. Thanks you so much!
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Apologies for idiocy, but I somehow seem to have moved my Python console
slightly off the top of my screen meaning that its title bar is no longer
visible. I therefore cannot grab it to move it. Is there a QSetting or
something which I can change via the console to move it back down?
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I posted this to Stackexchange, but have had no bites yet.
I have tried to use the code from
http://gis.stackexchange.com/questions/68803/qgis-save-raster-as-rendered-image?noredirect=1#comment207705_68803.
`i` is a raster layer:
pipelayer = i
pipeextent = pipelayer.extent()
The Processing calls are inherited code. Does warpreproject have completely
the wrong arguments? If so, I don't know how it works at all.
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I think deprecation and removal would be good, but for a tangential reason:
the name conflicts with OpenLayers the web mapping library. A trivial reason
at best, but probably irritating to many, and potentially confusing to
users.
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Is it not possible to have a copy of Saga local to the QGIS installation,
like the local Python install? Faking the main Saga version sounds like a
bad idea, breaking users' ability to upgrade it.
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qgis2web supports SVG markers in OL3 output (though not in Leaflet output).
However, when using SVGs from QGIS (eg
C:/OSGEO4~1/apps/qgis/./svg/wind_roses/WindRose_01.svg), the SVG does not
render, and I've not been able to find any console error. Using eg
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