Re: [Qgis-user] Expression to read field value from composer layout?
It is just an ordinary text field on a composer layout I think. I don't
use the atlas functionality.
On 4/08/21 10:19 am, Nyall Dawson wrote:
On Wed, 4 Aug 2021 at 06:17, Patrick Dunford wrote:
Good day
I am wishing to create a value in a field on a composer layout that
reads the value of another field on the layout and calculates a value to
be displayed.
For example, I have an existing field called Filename on the layout and
in a python script running in the main window console, I have this code
that reads the value of the Filename field as follows:
layoutTitle = "Landscape 16:9 Header Nav Copyright Filename 2021"
project = QgsProject.instance()
projectLayoutManager = project.layoutManager()
layout = projectLayoutManager.layoutByName(layoutTitle)
fileNameLabel = layout.itemById('Filename')
fileNameText = fileNameLabel.text()
Obviously I am hoping that doing this from a field within the layout
that reads another field on the same layout will be much simpler than
the above. How exactly would I achieve that?
Just to clarify -- by "field" do you mean "a field value from the
atlas layer", or "a text label item"?
Nyall
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Re: [Qgis-user] Expression to read field value from composer layout?
What's an atlas layer? I don't use the atlas functionality.
On 4/08/21 10:19 am, Nyall Dawson wrote:
On Wed, 4 Aug 2021 at 06:17, Patrick Dunford wrote:
Good day
I am wishing to create a value in a field on a composer layout that
reads the value of another field on the layout and calculates a value to
be displayed.
For example, I have an existing field called Filename on the layout and
in a python script running in the main window console, I have this code
that reads the value of the Filename field as follows:
layoutTitle = "Landscape 16:9 Header Nav Copyright Filename 2021"
project = QgsProject.instance()
projectLayoutManager = project.layoutManager()
layout = projectLayoutManager.layoutByName(layoutTitle)
fileNameLabel = layout.itemById('Filename')
fileNameText = fileNameLabel.text()
Obviously I am hoping that doing this from a field within the layout
that reads another field on the same layout will be much simpler than
the above. How exactly would I achieve that?
Just to clarify -- by "field" do you mean "a field value from the
atlas layer", or "a text label item"?
Nyall
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Re: [Qgis-user] Single lines for road network
On Sat, 31 Jul 2021 at 10:58, krishna Ayyala wrote: > > Hello, > I have a huge road network that has double lines such as below. We see such > roads mostly for express highways. > > In the same road network, there are also some streets with single lines such > as below. > > > > Is it possible to convert the entire road network such that we have only > single lines and not double lines such as above. Since the road network is > huge, it may not be possible to select manually each segment and run the > tools. Is there an automated tool that can do this for the entire network? The "Cartography Tools" plugin has some (beta quality!) processing tools which may help in this situation. Nyall > > Regards. > ___ > 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 ___ 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
[Qgis-user] Expression to read field value from composer layout?
Good day
I am wishing to create a value in a field on a composer layout that
reads the value of another field on the layout and calculates a value to
be displayed.
For example, I have an existing field called Filename on the layout and
in a python script running in the main window console, I have this code
that reads the value of the Filename field as follows:
layoutTitle = "Landscape 16:9 Header Nav Copyright Filename 2021"
project = QgsProject.instance()
projectLayoutManager = project.layoutManager()
layout = projectLayoutManager.layoutByName(layoutTitle)
fileNameLabel = layout.itemById('Filename')
fileNameText = fileNameLabel.text()
Obviously I am hoping that doing this from a field within the layout
that reads another field on the same layout will be much simpler than
the above. How exactly would I achieve that?
Thanks in advance.
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[Qgis-user] Adding Spatial Table
Hello all, I am trying to add an Oracle spatial table to QGIS but I am getting this error. ORA-00932: inconsistent datatypes: expected CHAR got SDE.ST_GEOMETRY I wonder why QGIS is expecting CHAR? it is correct that this column contains SDE.ST_GEOMETRY values. Any suggestions please? Regards, Yamen ___ 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
Re: [Qgis-user] Scalebar segments always go to 2 displayed on units change
On Mon, 02 Aug 2021 16:57:01 -0700 Jeff Sonnentag wrote Anyway, in a Layout once you have Units set and Segments set to 4 (or anything other than 2) and then you change the Units to something else the number of Segments still says 4 in that option but the displayed Scalebar only shows 2 Segments. Hi Jeff, when the scalebar unit is changed, then a default size (scale bar 1/5 of map item width) and a default number of segments for the left and the right part are applied to the scale bar. Anyway, as you have reported, the two spinboxes displaying the number of segments of the scalebar are not properly updated when the scalebar unit is changed. So please file a bug report, so somebody (myself too) can fix it. Regards. Andrea Giudiceandrea ___ 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
[Qgis-user] Online Course Now Open for Registration - An Introduction To Using GIS/QGIS In Biological Research, 6th - 9th September 2021
_GIS In Ecology_ will be holding a new online training course on using GIS in biological research between the 6th and 9th of September 2021. It will be held using the Zoom video-conferencing platform, and will consist of four three-hour sessions. One session will need to be completed each day. However, you will have a choice of completing it between 10:00 and 13:00 British Summer Time (primarily for those living in Europe, Asia and Africa) or 18:00 to 21:00 British Summer Time (primarily for those living in North and South America). This choice of time slots for each session allows participants from as wide a range of time zones to participate in the course. Attendance will be limited to a maximum of 24 people per session. The fees for this course are GBP 250 per person (with a discounted rate of GBP 195 for students, the unwaged and those working for registered charities). To book a place on it, or for more information, visit the course's dedicated webpage at http://gisinecology.com/online-course-an-introduction-to-using-gis-qgis-in-biological-research/, Alternatively, you can email i...@gisinecology.com with the subject line _Introductory Online GIS Course September 202_1. This course will be taught by Dr Colin D. MacLeod, the author of _ GIS For Biologists: A Practical Introduction For Undergraduates_ [1] (Pictish Beast Publications), and will provide an introduction to using GIS in a wide variety of biological research situations ranging from the basics of making maps through to studying the spread of diseases and creating maps of species biodiversity. It will consist of a series of background sessions on using GIS mixed in with practical sessions where you will work directly with GIS software to complete various tasks which biological researchers commonly need to be able to do. Each three-hour session will consist of a background talk covering a specific topic, followed by practical exercises based on instructions from one of our workbooks. While you are encouraged to remain online during the practical sessions, you can choose to go off-line as you work though the exercises (or if you need to take a break). However, if you have any questions, the course instructor will be available for you to ask any questions you wish at any point. This course will primarily be based around QGIS (also known as Quantum GIS), which provides a user-friendly, open-source, free alternative to commercial GIS software packages, and it is becoming increasingly widely used in both academic and commercial organisations As a result, it is aimed at both those with no GIS experience, but wish to learn how to to do GIS with QGIS, and also those who are familiar with using commercial GIS software, such as ArcGIS, but who wish to learn how to use QGIS as an alternative. However, this course is taught using software-independent approach, and it is also open to those who wish to learn how to use ArcGIS to do biological GIS. When you attend this course you will receive a free copy of _GIS For Biologists: A Practical Introduction for Undergraduates [1] _as the practical exercises in that course are based on the ones contained in that book. At the end of the course, all attendees will receive a certificate of attendance and completion. Each certificate is embossed with the GIS In Ecology official stamp to prevent its fraudulent reproduction. In addition, each certificate has its own unique identification number that we will record, along with your name, meaning that we can verify the authenticity of the certificates we issue (and the course you have completed) on request. To attend this course, you must have your own laptop computer with an appropriate GIS software package installed on it. Our recommended GIS software for this course is the freely available QGIS software. For those wishing to use QGIS, you will need to download and install QGIS 2.8.3 (for those using Windows computers) or 2.8.4 (for those using Macs) rather than the latest version. The best way to download the correct version of QGIS for this course is to use the links on our GIS For Biologists webpage, which can be found here [2]. If you would prefer to use ESRI's ArcGIS software instead of GIS, this can be accommodated, but please let us know at the time of booking that this is the option you would like to use. This course will be followed by a second, more advanced online course that will be held between the 13th and the 16th of September 2021 titled 'An Introduction To Species Distribution Modelling (SDM) In The Marine Environment'. More information on this course can be found at http://gisinecology.com/online-course-an-introduction-to-species-distribution-modelling-in-the-marine-environment/. --- == GIS IN ECOLOGY - Providing Training, Advice And Consultancy On The Use Of GIS In Ecology Web:
Re: [Qgis-user] Scalebar segments always go to 2 displayed on units change
On 8/3/21 11:32 AM, Andrea Giudiceandrea wrote: > On Mon, 02 Aug 2021 16:57:01 -0700 Jeff Sonnentag wrote > >> Anyway, in a Layout once you have Units set and Segments set to 4 (or >> anything other than 2) and then you change the Units to something else the >> number of Segments still says 4 in that option but the displayed Scalebar >> only shows 2 Segments. > > Hi Jeff, > when the scalebar unit is changed, then a default size (scale bar 1/5 of map > item width) and a default number of segments for the left and the right part > are applied to the scale bar. > > Anyway, as you have reported, the two spinboxes displaying the number of > segments of the scalebar are not properly updated when the scalebar unit is > changed. > > So please file a bug report, so somebody (myself too) can fix it. I'm trying to fix it :-) (indeed it seems we always go back to default values (probably to not end up in a cascade of changes...)), but only that defaults are not reflected in the item. Seems an easy fix. Regards, Richard Duivenvoorde ___ 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
Re: [Qgis-user] Scalebar segments always go to 2 displayed on units change
in QGIS 3.20.1 the behaviour is still the same. Didn't found anything on https://github.com/qgis/QGIS/issues?q=is%3Aissue+is%3Aopen+label%3ABug+label%3A%22Print+Layouts%22+scalebar so the best is to make a new issue on https://github.com/qgis/QGIS/issues Am 03.08.2021 um 01:56 schrieb Jeff Sonnentag: I don’t know what a person would search for in the “issues” or “commits” to see if this is already known or fixed, but it is an annoyance (nothing particularly critical). Anyway, in a Layout once you have Units set and Segments set to 4 (or anything other than 2) and then you change the Units to something else the number of Segments still says 4 in that option but the displayed Scalebar only shows 2 Segments. To get things right you just have to increment up or down and then back to what you want for number of segments and the displayed Scalebar switches to what is actually in the Segments option. Does anybody know if it is already taken care of in something newer (using 3.16.9 here) or if it is already known/reported? ___ 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 -- Mit freundlichen Grüßen Stefan Giese Projektleiter/Consultant Aufbau von Geodateninfrastrukturen mit Open-Source-Software FOSS Academy 5 Tage-Kompaktkurs „Sommerschule 2021“ Jetzt anmelden: https://foss-academy.com/kompaktkurse/ * WhereGroup GmbH Schwimmbadstr. 2 79100 Freiburg Germany Fon: +49 (0)761 / 519 102 - 61 Fax: +49 (0)761 / 519 102 - 11 stefan.gi...@wheregroup.com www.wheregroup.com Geschäftsführer: Olaf Knopp, Peter Stamm Amtsgericht Bonn, HRB 9885 ___ 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
