I am trying to split a line feature using the "split features" tool on the
Editing toolbar in QGIS 10.4.
The manual advice on how to do this is as follows
To split line or polygon features:
Select the Split Features tool.
Draw a line across the feature(s) you want to split. If a se
Christine wrote
> ... I cannot achieve a splitting of features with my specific
> lineZ feature dataset at all and I have no idea why. Couldn't find an
> entry
> of a known bug or problem for this, ...
Have found a roundabout with the creation of an overlay layer (close buffer
polygons around the
Dear colleagues,
since a while I am struggling with the 'split features' tool that doesn't
like to split my line features (lineZ). Have already checked for geometry
problems in my dataset (geopackage), the data are projected (dataset and
project CRS are the same). The split featurs tool works fin
Hi Andreas,
good it works, thanks for testing.
For the tracing function (I have no idea how much work that would be,
either): You are welcome to file an enhancement ticket for this as I am
planning to overhaul the plugin once QGIS 3.0 is released.
Bernhard
Am 20.06.2017 um 09:24 schrieb Andrea
Hi Bernhard,
perfect! Both works for me.
A nice-to-have for the future would also be the utilization of the
tracing function in case tracing is enabled.
I can not assess how much work that would mean.
cheers
On 19 June 2017 at 18:05, Bernhard Ströbl wrote:
> Hi Andreas,
> has been fixed; split
Hi Andreas,
has been fixed; split feature now uses the highlight color, too
Please update your plugin
Bernhard
Am 19.06.2017 um 10:05 schrieb Andreas Wicht:
Hi Bernhard,
I can consistently produce a python error when splitting a Multipart
Feature and then clicking "No to all":
UnboundLocalErr
Hi Bernhard,
I can consistently produce a python error when splitting a Multipart
Feature and then clicking "No to all":
UnboundLocalError: local variable 'newGeoms' referenced before assignment
Traceback (most recent call last):
File
"C:\Users\Andreas.Wicht\.qgis2\python\plugins\DigitizingTo
Hi Andreas,
the color is currently defined in the code. I did not find any setting
to apply. AFAIK only selection color can be defined by the user, but it
might be misleading if you have a selected feature and then have split
parts colored exactly the same. - Wait a minute I just found the
"H
Hi Bernhard,
just got to test the new version. It works now as expected.
Thank you a lot for the good work there!
Is the highlight color of the currently "selected" part (when you
choose which part should form the new feature) defined in the code or
does it use a color, which is set in the QGIS s
FYI
I implemented a new "Split features" tool in DigitizingTools [1].
It should replace "Split features" and "Split parts" in core, see [2]
Bernhard
[1] http://plugins.qgis.org/plugins/DigitizingTools/
[2] https://github.com/bstroebl/DigitizingTools/wiki/Usage
Am 02.06.2017 um 10:48 schrieb Ber
Hi Andreas,
--snip---
Chaining those 2 tools manually produces exactly the output I would
expect.
- I use "Split Parts" and receive the halves which form the invalid
geometry
- then I use "Split off one part and add it as a new feature" on the
part which I want to separate
- make sure the pri
Hi Bernhard,
> In my tests only the halves of the part that was split became new features,
> the rest of the mulit-part feature stays multipart, so all the islands would
> stay in the feature and you would only have to merge one half with the
> island multi polygon.
Yes, you are right.
>> For Ar
Hi Andreas,
Am 31.05.2017 um 18:02 schrieb Andreas Wicht:
Hi Bernhard,
I dug deeper and it seems that I can always split the part once. Any
further
splitting of any part results in the invalid geometry error.
https://issues.qgis.org/issues/12799 describes why.
Exactly. So when you split the
Hi Bernhard,
>>> I dug deeper and it seems that I can always split the part once. Any
>>> further
>>> splitting of any part results in the invalid geometry error.
>>> https://issues.qgis.org/issues/12799 describes why.
>>
>>
>> Exactly. So when you split the polygon and save the edits you will
>>
Hi Andreas,
my comments below
Am 31.05.2017 um 13:04 schrieb Andreas Wicht:
On 31 May 2017 at 12:23, Bernhard Ströbl wrote:
Hi Andreas,
I dug deeper and it seems that I can always split the part once. Any further
splitting of any part results in the invalid geometry error.
https://issues.qgis.
On 31 May 2017 at 12:23, Bernhard Ströbl wrote:
> Hi Andreas,
> I dug deeper and it seems that I can always split the part once. Any further
> splitting of any part results in the invalid geometry error.
> https://issues.qgis.org/issues/12799 describes why.
Exactly. So when you split the polygon
Hi Andreas,
I dug deeper and it seems that I can always split the part once. Any
further splitting of any part results in the invalid geometry error.
https://issues.qgis.org/issues/12799 describes why.
IMHO splitting a part once is ok because you might want to delete this
newly created part or
Yes, Bernhard is right. Actually, this might be caused by rounding issues
(or by the limit of floating point calculations).
I often have problems with topology when working with another projection.
The direct and its invers calculation hardly is the same.
Am Mi, 31.05.2017, 10:53 schrieb Bernhar
Hi Bernhard
On 31 May 2017 at 10:53, Bernhard Ströbl wrote:
> Andreas,
> when loading your shape file into a new project the project is set to
> EPSG:4326 because your data are in EPSG:4326
> Your screenshots indicate that you are working in another projection.In
That was just for a better visua
Andreas,
when loading your shape file into a new project the project is set to
EPSG:4326 because your data are in EPSG:4326
Your screenshots indicate that you are working in another projection. In
EPSG:4326 split parts works flawlessly, when I use a projection I get
the invalid geometries error
Hey Andreas,
I haven't experienced the invalid geometry as you describe, but I did find that
my QGIS install had some issues. I have upgraded to 2.18.9 on Win10. If you
have a sample of your data available, I would be happy to try to corroborate.
James
Sent from my iPhone
> On May 29, 2017, at
Hi Andreas,
I have no problem with invalid geometries in my PostGIS test layers with
split parts using QGIS 2.14.15 on Linux.
Without having your data I cannot tell why yours are invalid.
Anyway you might try DigitizingTools plugin which has a tool that
deletes a part of a multi feature and i
On 29 May 2017 at 13:16, Andreas Wicht wrote:
> On 28 May 2017 at 14:43, James Wood wrote:
>> On the digitizing toolbar, try "Split Parts" instead of "Split Features" on
>> multipart polygons.
>
> Thank you for the hint, James. Somehow I always thought that this
> function is only suitable for s
On 28 May 2017 at 14:43, James Wood wrote:
> On the digitizing toolbar, try "Split Parts" instead of "Split Features" on
> multipart polygons.
Thank you for the hint, James. Somehow I always thought that this
function is only suitable for separating an existing part from a
feature (never used it
Hey Andreas,
On the digitizing toolbar, try "Split Parts" instead of "Split Features" on
multipart polygons.
HTH,
James
Sent from my iPhone
> On May 22, 2017, at 06:49, Andreas Wicht wrote:
>
> Hi all,
>
> I have a question regarding the behavior of the "split features" tool
> when it comes
Hi all,
I have a question regarding the behavior of the "split features" tool
when it comes to multipart polygons.
For that I created a small example (see split_features_1.png).
The polygon "1" is a multipart polygon as shown in the screenshot.
Let's say a user wants to split the lower polygon in
Ah that’s fine thank you Andreas and Even.
Chris
From: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] On Behalf Of
Neumann, Andreas
Sent: 19 October 2016 13:55
To: Even Rouault
Cc: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Split features using Geopackage layer?
As far as I know
On 19 October 2016 at 22:55, Neumann, Andreas wrote:
> As far as I know, Nyall Dawson is currently working on fixing this, as part
> of his work on unique value constraints (provider provided or qgis provided
> where the provider doesn't support it). But not sure about the details.
> Certainly, Po
As far as I know, Nyall Dawson is currently working on fixing this, as
part of his work on unique value constraints (provider provided or qgis
provided where the provider doesn't support it). But not sure about the
details. Certainly, PostgreSQL and Geopackage are top priorities for
that. And his w
Le mercredi 19 octobre 2016 14:14:40, Chris Buckmaster a écrit :
> Hi
>
> I have a geopackage polygon layer and I am trying to split a simple feature
> within it.
>
> When I try to do it, I get an error message 'failed to insert, UNIQUE
> constraint failed'.
>
> Is this a known issue with splitt
Hi
I have a geopackage polygon layer and I am trying to split a simple feature
within it.
When I try to do it, I get an error message 'failed to insert, UNIQUE
constraint failed'.
Is this a known issue with splitting features using the geopackage format, it
could it be how the layer is set up
Hi,
I cannot confirm this behaviour neither with 2.8 on Win7 nor with 2.10
on Linux. When asking the new features with the "i" tool after
splitting, one keeps its pk value the other displays
nextval("my_sequence"). Maybe the problem is that features have received
pk values by other means then
Dear all,
When using the split features tool in 2.10 and 2.12 on a postgres layer
(both on windows 7 and windows xp) I receive the following error after
trying to save the edits:
"
Could not commit changes to layer a_streets
Errors: ERROR: 1 feature(s) not added.
Provider errors:
PostGIS
Also having problem with Split Features.
I can split if split line is horizontal, otherwise it won't.
Am I missing something?
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yes, andreas, it is as you say.
but if you don't cross it happens as first post reports: nothin' happens!
definitevely you must cross the boundaries.
--
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http://osgeo-org.1560.n6.nabble.com/split-features-tp4995360p4995477.html
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Hi,
I believe that the QGIS split function requires the crossing, even if
snapping is perfect. You can snap and CROSS at the same time. No
problem.
Did you try it?
Andreas
On Wed, 15 Aug 2012 06:56:44 -0700 (PDT), skampus wrote:
this thread comes properly.
as you said, in order to split a
this thread comes properly.
as you said, in order to split a features you have to CROSS the element.
if you have a polygon to be splitted at vertices, i don't understand why you
have to cross it. if you set properly snapping, it's simple to draw
splitting segment that snap perfectly to vertices of
Am 15.08.12 13:19, schrieb michael chiverton:
Hi qgisers,
When digitizing in qgis, how is the split features option utilized.
everytime i try to split my features (similar to cut polygons in arcgis) i
get nothing. it doesnt split the feature. is there some trick to this
that i am missing?
T
Hi,
How did you split? You have to draw a split line with at least two
points that actually crosses one or more polygons or lines.
The other question: do you use a recent build of QGIS?
Andreas
On Wed, 15 Aug 2012 04:19:04 -0700, michael chiverton wrote:
Hi qgisers,
When digitizing in qgi
Hi qgisers,
When digitizing in qgis, how is the split features option utilized.
everytime i try to split my features (similar to cut polygons in arcgis) i
get nothing. it doesnt split the feature. is there some trick to this
that i am missing?
thanks,
mike
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