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<p>Congrats - sorry I was almost leading own a more labor intensive
path. <br>
</p>
<p>So now I have a question? I'm on QGIS 2.18 on Linux - Where is
geomintersects()? I don't see it in Field calculator as something
I can use (I have a lot of geom functions) but just not that
currently. I was reading back through all the emails and maybe I'm
missing something (I haven't tried my windows version yet). <br>
</p>
<p>Thanks in Advance, <br>
</p>
<p>Randy<br>
</p>
<p><br>
</p>
<br>
<div class="moz-cite-prefix">On 12/22/2016 03:26 AM, Laurent Bourlet
wrote:<br>
</div>
<blockquote
cite="mid:9505266c-5d40-c133-06b8-7bfc170752e4@gmail.com"
type="cite">
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<p>Hi at all</p>
<p>i succeed !! thank's at all ...Andrew was right ... but i add
an another thing ; i have indicated in the dialogue box , under
"default value" , in "relational value" the name of the layer B
, the right field etc... and now it's ok !</p>
<p>one more time , thank's !!</p>
<p>laurent<br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">Le 21/12/2016 à 23:32, Andrew a
écrit :<br>
</div>
<blockquote
cite="mid:CACnL9ngjWnmpG9G1j2h60Jcj0EqwSYoRHEcLjTT=QiWg4fz1qw@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>Regarding the default values option/limitations, I can
add that if you try to use the default values expression
dialog to build an expression using geomintersects() the
dialog will evaluate the expression as invalid. Instead,
build the expression in the field calculator and then
copy/paste it into default value box and skip using the
expression dialog.<br>
<br>
</div>
Andrew<br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Dec 21, 2016 at 1:32 PM,
DelazJ <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:delazj@gmail.com" target="_blank">delazj@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div>
<div>
<div>
<div>
<div>Hi,<br>
</div>
Laurent, I can think about different ways you
can test to tackle your issues, provided you
have two spatial layers that overlap (and
without any intermediate layer creation):<br>
- recent QGIS introduce default values concept (<a
moz-do-not-send="true"
href="http://docs.qgis.org/testing/en/docs/user_manual/working_with_vector/vector_properties.html#common-settings"
target="_blank"><a class="moz-txt-link-freetext" href="http://docs.qgis.org/testing/">http://docs.qgis.org/testing/</a><wbr>en/docs/user_manual/working_<wbr>with_vector/vector_properties.<wbr>html#common-settings</a>)
- i'm not really sure about its limitations
though<br>
</div>
- add a virtual field (<a moz-do-not-send="true"
href="http://docs.qgis.org/2.14/en/docs/user_manual/working_with_vector/attribute_table.html#editing-attribute-values"
target="_blank">http://docs.qgis.org/2.14/en/<wbr>docs/user_manual/working_with_<wbr>vector/attribute_table.html#<wbr>editing-attribute-values</a>)
that you could later recalculate into a simple
field<br>
</div>
- use the Autofields plugin (<a
moz-do-not-send="true"
href="http://plugins.qgis.org/plugins/AutoFields/"
target="_blank"><a class="moz-txt-link-freetext" href="http://plugins.qgis.org/">http://plugins.qgis.org/</a><wbr>plugins/AutoFields/</a>)<br>
</div>
<div>- use the SpatialJoin plugin (<a
moz-do-not-send="true"
href="http://plugins.qgis.org/plugins/spatialJoin/"
target="_blank"><a class="moz-txt-link-freetext" href="http://plugins.qgis.org/">http://plugins.qgis.org/</a><wbr>plugins/spatialJoin/</a>)<br>
<br>
</div>
Except the SpatialJoin plugin option (which is
internally based on it), you'll need to write an
expression likely based on refFunctions plugin (e.g,
geomintersects) someone mentioned above.<br>
<br>
</div>
<div>HTH,<br>
</div>
<div>Harrissou<br>
</div>
<div><br>
</div>
</div>
<div class="HOEnZb">
<div class="h5">
<div class="gmail_extra"><br>
<div class="gmail_quote">2016-12-21 19:23 GMT+01:00
Laurent Bourlet <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:laurentbourlet34@gmail.com"
target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:laurentbourlet34@gmail.com">laurentbourlet34@gmail.com</a></a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0
0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">Hi,<br>
<br>
i thought it was more easy ...<br>
<br>
In fact , i don't use a GPS because these points
don't need precision : they are only used to
identify the parcels . And i would like to catch
their identity ( a number for each parcel and
the owner ) if possible with a dynamic
spatialjoin...<br>
<br>
With booth data ( number of parcel and name of
owner ) , i could talk with the fisc
administration :-)<br>
<br>
Randy was right ...i didn't have the same EPSG
for the two layers . It's now OK ! but without
the feature "dynamic" .<br>
<br>
Indeed , i would avoid building many temporaries
layers and i thought it existed a plugin for
this " dynamic" feature.<br>
<br>
If no , i will ask my users to make spatialjoins
some time to time ...<br>
<br>
Waiting , i will try the solution of Bernd...<br>
<br>
Thank you anyway !<span
class="m_8338402242151116453HOEnZb"><font
color="#888888"><br>
<br>
laurent</font></span>
<div class="m_8338402242151116453HOEnZb">
<div class="m_8338402242151116453h5"><br>
<br>
<br>
Le 21/12/2016 à 17:46, Bernd Vogelgesang a
écrit :<br>
<blockquote class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px
#ccc solid;padding-left:1ex"> Hi,<br>
<br>
for me this sounds more like he is getting
new points once in a while and<br>
wants to join those attributes to the new
points "automatically" from the<br>
parcel layer.<br>
<br>
The biggest problem for users is to
rethink the workflow from the end to<br>
the beginning and to know the limitations.<br>
<br>
The outcome should be a point layer with
the polygons attributes. If those<br>
points (layer A) are from GPS as Randy
assumes, they have to be<br>
reprojected to the parcels layer (layer B)
before being able to join them<br>
spatially(layer C). The spatial join in
the toolbox produces layer D.<br>
<br>
Most probably, the resulting layer D is
going to to be edited in some way<br>
(adding notes about size, the progress,
classifications, whatever), so you<br>
will have to find a way to preserve those
new attribute while being able to<br>
add new points without much trouble.<br>
<br>
The processing toolbox is a good way to do
these steps, though it produces<br>
a lot of temporary files cluttering the
project.<br>
<br>
A better way for all those repetitive
tasks, is to use the graphical<br>
modeller, to create a workflow which only
has to be triggered once new<br>
points come in, and the resulting file can
be saved as new a file e.g.<br>
with the current date in the name, so you
have kind of an archive and do not<br>
overwrite previous files (and destroy your
work in case something goes<br>
wrong).<br>
<br>
So I can imagine a model with input layer
A (new points in WGS84 without attributes)
and a parcel layer B (in whatever
projection).<br>
reproject layer A and C will be created as
an intermediate step.<br>
<br>
Next input layer is the latest result
layer D, reprojected and with attributes.<br>
Merge layer C and D -> E. Now delete
all columns which are from layer B (from
the last spatial join. Unfortunately, you
can only delete one field at a time in the
modeller, so you'll will have to add the
command several times in a row to the
model) -> Fn<br>
Do the spatial join of Fn with B.<br>
<br>
The last result G will now hold all points
with the corresponding parcel info plus
additional fields you might have added to
the points.<br>
G will be the input D in the next run with
fresh points.<br>
<br>
So, do not add new points to the already
existing collection of points in WGS84 (it
is never save to edit layers without
backup), but just import them as a new
input set and then run the model with the
parcel layer and the last result layer.<br>
<br>
The modeller is not as intuitive as it
should be, but it can save you a lot of
time once you managed to set up a model.<br>
<br>
Maybe I was completely wrong analysing the
problem, but maybe someone else has the
problem that fits to my solution ;)<br>
Cheers<br>
Bernd<br>
<br>
<br>
<br>
<br>
<br>
Am 21.12.2016, 14:07 Uhr, schrieb Randal
Hale<br>
<<a moz-do-not-send="true"
href="mailto:rjhale@northrivergeographic.com"
target="_blank">rjhale@northrivergeographic.c<wbr>om</a>>:<br>
<br>
<blockquote class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px
#ccc solid;padding-left:1ex"> 2 things:<br>
<br>
1. In QGIS there is a processing toolbox
(I assume you are one something as new
as version 2.14.8). Open it (it's at the
top -> Processing -> Toolbox). You
can search for tools. Search for "join"
and you should see a "Join Attributes by
location". This is a spatial join.<br>
<br>
2. THE MOST IMPORTANT THING. You
mentioned you had collected points with
a GPS. Possibly these points are in
EPSG:4326. I'm going to guess that your
parcel layer isn't. If you right click
your parcel layer (in the layers panel)
it will allow you to select properties.
On the General Tab you will see the
Coordinate Reference System mentioned
and many times it is something like
EPSG:xxxx . A Spatial Join must have the
layers in the same coordinate system.<br>
<br>
If it is different - Right Click on your
GPS points and "Save as". When the "Save
vector layer as...." window comes up.
Save it as a shapefile and MOST
IMPORTANTLY change the CRS to match your
parcel layer. Click on the small globe
(that appears to be wearing a hat) and
in the filter type in the number you see
for your parcels. You can then select
that projection and Save your file. It
should save. You can then perform the
"join by location".<br>
<br>
It should work. You are very close
though so don't worry.<br>
<br>
Randy<br>
<br>
<br>
<br>
On 12/21/2016 01:24 AM, Erwan Conseil
wrote:<br>
<blockquote class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px #ccc
solid;padding-left:1ex"> Hi<br>
In my layer B , I have the name of the
owner and the number of the parcel :
this number , a polygon , have a WKT
location . All this is in a SHP . As I
grab points in layer A directly in
Qgis (2.18) , I have also a SHP . And
i need a dynamic join because I have
no desire to make the spatial join
each time...<br>
Regards<br>
Laurent<br>
<br>
<blockquote class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px #ccc
solid;padding-left:1ex"> Le 21 déc.
2016 à 01:30, Randal Hale <<a
moz-do-not-send="true"
href="mailto:rjhale@northrivergeographic.com"
target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:rjhale@northrivergeographic.c">rjhale@northrivergeographic.c</a><wbr>om</a>>
a écrit :<br>
<br>
In your layer B - Do the Names of
the Owners have a location (like a
tax parcel) or are they a
spreadsheet (like Microsoft Excel)?<br>
<br>
Randy<br>
<br>
<br>
<blockquote class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px #ccc
solid;padding-left:1ex"> On
12/20/2016 06:03 PM, Laurent
Bourlet wrote:<br>
Hi at all<br>
<br>
I'm a beginner in Qgis and i would
make a dynamic spatialjoin.<br>
In fact , i have created a vector
layer ( for example A) and i grab
points in it when I'm outdoor (
these points are buildings
unknowned by the government and so
these building are not taxed ...)
. I have also a layer (B) with the
name of the owners of these lands
.<br>
You see what i would ?...<br>
I would have these names
transferred as attribut from B to
A .<br>
For that , i think about a
spatialjoin with a dynamic feature
. So i have downloaded the two
plugins "reffunction" and
"spatialjoin".<br>
But i have certainly maked
something wrong because i don't
succeed ...<br>
<br>
Is it the good method ?<br>
<br>
And If yes , and if exist a doc
about these plugins ...i'll take
it :-))<br>
<br>
regards<br>
<br>
Laurent<br>
<br>
( pour les francophones ...je
repère et saisis des points
représentants des batiments
construits et visibles par Google
Map mais inconnus par le cadastre
et donc les impôts ...je voudrais
donc enrichir la couche de saisie
par les références des parcelles
et les noms des propriétaires par
une jointure spatiale dynamique
..à chaque point saisi , "monte"
cette référence )<br>
<br>
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-- -----------------<br>
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North River Geographic Systems, Inc<br>
<a moz-do-not-send="true"
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<pre class="moz-signature" cols="72">--
-----------------
Randal Hale
North River Geographic Systems, Inc
<a class="moz-txt-link-freetext" href="http://www.northrivergeographic.com">http://www.northrivergeographic.com</a>
423.653.3611 <a class="moz-txt-link-abbreviated" href="mailto:rjhale@northrivergeographic.com">rjhale@northrivergeographic.com</a>
twitter:rjhale</pre>
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