Re: [Qgis-user] Virtual rasters and relative paths

[Alex Mandel]

On 2016-02-25 07:25, Richard Burkmar wrote:
> I created a virtual raster from a number of raster files (jpegs) all in one
> folder through the interface available from Raster>Miscellaneous>Build
> Virtual Raster. I saved the VRT file to the same folder as the raster
> images. I open as a VRT and all is well.
> 
> But if I copy the folder to another location, the VRT breaks when I open
> it. So I looked at the VRT file in Notepad++ and, sure enough, the
> pathnames to all the raster files are full pathnames instead of relative
> pathnames which is why moving the folder breaks it.
> 
> I assumed that if I saved the VRT in, or in a parent folder of, the folder
> with the raster images, then the paths to the rasters would be relative. I
> can't see an option to explicitly specify relative pathnames. I tried
> saving the VRT in the parent folder of the rasters but still it saves full
> pathnames. I tried specifying rasters using both 'all visible' and 'all in
> folder' method with the same result.
> 
> The actual paths in the VRT file look like this:
> 
>  relativeToVRT="0">E:\ExerciseData\Raster\PM\pm4.jpeg
> 
> It looks like the relativeToVRT attribute should be set to 1 to make
> relative paths, but how do I specify that from the
> Raster>Miscellaneous>Build Virtual Raster interface?
> 
> I'm using QGIS 2.12.3 from the standalone installer for Windows 64 bit.
> 
> Rich
> 
>

I just checked http://www.gdal.org/gdalbuildvrt.html it does not appear
that an option to make relative paths is exposed by the tool. I think we
should file an enhancement ticket with gdal for the feature. That would
be the best long term solution.

Short term seems like changing that value to relative and then doing a
find and replace on the path strings with a text editor (or if you want
to get fancy python or sed).

Bummer,
Alex

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Re: [Qgis-user] QGIS 2.14 report always coordinate in geographic

[Nyall Dawson]

On 12 Mar 2016 02:16, "Havard Tveite"  wrote:
>
> I was also confused by this.
>
> Having Map units as the default for "Display coordinates" seems
> logical to me, so I suggest that the default is changed.
>
> Could this be considered a bug (change of behaviour) and fixed
> for 2.14.x?

The default is already map units in 2.14.0.

You are probably experiencing http://hub.qgis.org/issues/14392 , which
means that the project CRS is not correctly updated when a new layer is
added.

Nyall

>
> Håvard
>
>
> On 11. mars 2016 12:37, Claas Leiner wrote:
>>
>> Hi,
>>
>> There ist a new setting option:
>>
>> Project > Project properties >
>> General > Coordinate display > Display coordinates using:
>> You can change Degrees to Map units (m)
>>
>> Claas
>>
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Re: [Qgis-user] QGIS 2.14 report always coordinate in geographic

[Andrea Peri]

+1 for me.
We also was confused from a geographical coordinate when the map srs is
projected.
Il 11 mar 2016 4:16 PM, "Havard Tveite"  ha scritto:

> I was also confused by this.
>
> Having Map units as the default for "Display coordinates" seems
> logical to me, so I suggest that the default is changed.
>
> Could this be considered a bug (change of behaviour) and fixed
> for 2.14.x?
>
> Håvard
>
> On 11. mars 2016 12:37, Claas Leiner wrote:
>
>> Hi,
>>
>> There ist a new setting option:
>>
>> Project > Project properties >
>> General > Coordinate display > Display coordinates using:
>> You can change Degrees to Map units (m)
>>
>> Claas
>>
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[Qgis-user] Processing ideas and questions

[johnrobot]

Hi
I have a few ideas on how to improve the model builder in processing:

- Support for adding/attaching comments to any component. That would, for
example, help explaining why a specific tool is used. Great for
documentation purposes.
- Open a model by just dropping it in QGIS.
- Support for attaching external files with the processed results. That way,
I could run a model and deliver the results to the client and have all the
necessary documentation included automatically.
- Support for sending an e-mail when the model has finished processing.
- To me, the tools seem to use to much screen space. I can of course resize
them, but I suggest that we make them as small as possible from start.
- Support for undo/redo.
- Removing an object by selecting it and hitting the delete button.
- Make the tools hightlight necessary missing parameter input.
- Support for writing to SQL Server, much like there already is support for
writing to PostGIS.
- I would like to see the number of features coming from each data
set/component in every connection in the model.

What are your impressions of these suggestions? Are any of them already
covered? Should I open tickets?

Down the road, I would like to publish processing models in a web interface
(not a view of the actual models, but an interface for managing and running
them) , so that non-technical users can process and access the data, much
like FME Server. I recently found wps4server. Would that be a possible way
forward for this? I would like to use a simple web page for running the
models and access the data.

Regards,

Magnus



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Re: [Qgis-user] ntv2_transformations - QGIS 2.14

[Pedro Venâncio]

ntv2_transformations plugin is now only available to work with Processing
2.12.99.

changelog:
0.12 - Plugin update to work on QGIS >= 2.14. The plugin nows also work
only with Processing shipped with QGIS >= 2.14

Just uninstall Processing 2.12.2 from Plugins Manager. You will get
Processing 2.12.99, that is shiped with QGIS 2.14.

But note that if you have created modules or scripts, they can become
broken.

Best regards,
Pedro



2016-03-11 15:04 GMT+00:00 ilgovi :

> Impossibile caricare il plugin 'ntv2_transformations'
>
> ImportError: cannot import name ogrConnectionString
>
> Traceback (most recent call last):
>   File "/usr/lib/python2.7/dist-packages/qgis/utils.py", line 281, in 
> loadPlugin
> __import__(packageName)
>   File "/usr/lib/python2.7/dist-packages/qgis/utils.py", line 572, in _import
> mod = _builtin_import(name, globals, locals, fromlist, level)
>   File "/home/druido/.qgis2/python/plugins/ntv2_transformations/__init__.py", 
> line 28, in
> from ntv2_transformations.DETransformProviderPlugin import \
>   File "/usr/lib/python2.7/dist-packages/qgis/utils.py", line 572, in _import
> mod = _builtin_import(name, globals, locals, fromlist, level)
>   File 
> "/home/druido/.qgis2/python/plugins/ntv2_transformations/DETransformProviderPlugin.py",
>  line 35, in
> from ntv2_transformations.DETransformProvider import DETransformProvider
>   File "/usr/lib/python2.7/dist-packages/qgis/utils.py", line 572, in _import
> mod = _builtin_import(name, globals, locals, fromlist, level)
>   File 
> "/home/druido/.qgis2/python/plugins/ntv2_transformations/DETransformProvider.py",
>  line 36, in
> from ntv2_transformations.VectorDE_GK3ETRS8932NDirInv import 
> VectorDE_GK3ETRS8932NDirInv
>   File "/usr/lib/python2.7/dist-packages/qgis/utils.py", line 572, in _import
> mod = _builtin_import(name, globals, locals, fromlist, level)
>   File 
> "/home/druido/.qgis2/python/plugins/ntv2_transformations/VectorDE_GK3ETRS8932NDirInv.py",
>  line 50, in
> from processing.tools.vector import ogrConnectionString, ogrLayerName
> ImportError: cannot import name ogrConnectionString
>
> Versione Python: 2.7.6 (default, Jun 22 2015, 18:01:27) [GCC 4.8.2] Versione
> di QGIS: 2.14.0-Essen Essen, exported
>
> Path di Python:
>
>- /home/druido/.qgis2/python/plugins/processing
>- /usr/share/qgis/python
>- /home/druido/.qgis2/python
>- /home/druido/.qgis2/python/plugins
>- /usr/share/qgis/python/plugins
>- /usr/lib/python2.7
>- /usr/lib/python2.7/plat-x86_64-linux-gnu
>- /usr/lib/python2.7/lib-tk
>- /usr/lib/python2.7/lib-old
>- /usr/lib/python2.7/lib-dynload
>- /usr/local/lib/python2.7/dist-packages
>- /usr/lib/python2.7/dist-packages
>- /usr/lib/python2.7/dist-packages/PILcompat
>- /usr/lib/python2.7/dist-packages/gtk-2.0
>- /usr/lib/pymodules/python2.7
>- /usr/lib/python2.7/dist-packages/ubuntu-sso-client
>- /usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode
>- /home/druido/.qgis2//python
>- /home/druido/.qgis2/python/plugins/gearthview/ext-libs
>- /home/druido/.qgis2/python/plugins/DigitizingTools/tools
>- /usr/share/qgis/python/plugins/fTools/tools
>
> --
> Dott. For. Giorgio Govi
> 3470977917
>
>
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Re: [Qgis-user] QGIS 2.14 report always coordinate in geographic

[Havard Tveite]

I was also confused by this.

Having Map units as the default for "Display coordinates" seems
logical to me, so I suggest that the default is changed.

Could this be considered a bug (change of behaviour) and fixed
for 2.14.x?

Håvard

On 11. mars 2016 12:37, Claas Leiner wrote:

Hi,

There ist a new setting option:

Project > Project properties >
General > Coordinate display > Display coordinates using:
You can change Degrees to Map units (m)

Claas


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[Qgis-user] ntv2_transformations - QGIS 2.14

[ilgovi]

Impossibile caricare il plugin 'ntv2_transformations'

ImportError: cannot import name ogrConnectionString

Traceback (most recent call last):   File 
"/usr/lib/python2.7/dist-packages/qgis/utils.py", line 281, in 
loadPlugin __import__(packageName)   File 
"/usr/lib/python2.7/dist-packages/qgis/utils.py", line 572, in _import   
  mod = _builtin_import(name, globals, locals, fromlist, level)   File 
"/home/druido/.qgis2/python/plugins/ntv2_transformations/__init__.py", 
line 28, in from ntv2_transformations.DETransformProviderPlugin 
import \   File "/usr/lib/python2.7/dist-packages/qgis/utils.py", line 
572, in _import mod = _builtin_import(name, globals, locals, 
fromlist, level)   File 
"/home/druido/.qgis2/python/plugins/ntv2_transformations/DETransformProviderPlugin.py", 
line 35, in from ntv2_transformations.DETransformProvider import 
DETransformProvider   File 
"/usr/lib/python2.7/dist-packages/qgis/utils.py", line 572, in _import   
  mod = _builtin_import(name, globals, locals, fromlist, level)   File 
"/home/druido/.qgis2/python/plugins/ntv2_transformations/DETransformProvider.py", 
line 36, in from ntv2_transformations.VectorDE_GK3ETRS8932NDirInv 
import VectorDE_GK3ETRS8932NDirInv   File 
"/usr/lib/python2.7/dist-packages/qgis/utils.py", line 572, in _import   
  mod = _builtin_import(name, globals, locals, fromlist, level)   File 
"/home/druido/.qgis2/python/plugins/ntv2_transformations/VectorDE_GK3ETRS8932NDirInv.py", 
line 50, in from processing.tools.vector import ogrConnectionString, 
ogrLayerName ImportError: cannot import name ogrConnectionString


Versione Python: 2.7.6 (default, Jun 22 2015, 18:01:27) [GCC 4.8.2] 
Versione di QGIS: 2.14.0-Essen Essen, exported


Path di Python:

 * /home/druido/.qgis2/python/plugins/processing
 * /usr/share/qgis/python
 * /home/druido/.qgis2/python
 * /home/druido/.qgis2/python/plugins
 * /usr/share/qgis/python/plugins
 * /usr/lib/python2.7
 * /usr/lib/python2.7/plat-x86_64-linux-gnu
 * /usr/lib/python2.7/lib-tk
 * /usr/lib/python2.7/lib-old
 * /usr/lib/python2.7/lib-dynload
 * /usr/local/lib/python2.7/dist-packages
 * /usr/lib/python2.7/dist-packages
 * /usr/lib/python2.7/dist-packages/PILcompat
 * /usr/lib/python2.7/dist-packages/gtk-2.0
 * /usr/lib/pymodules/python2.7
 * /usr/lib/python2.7/dist-packages/ubuntu-sso-client
 * /usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode
 * /home/druido/.qgis2//python
 * /home/druido/.qgis2/python/plugins/gearthview/ext-libs
 * /home/druido/.qgis2/python/plugins/DigitizingTools/tools
 * /usr/share/qgis/python/plugins/fTools/tools

--
Dott. For. Giorgio Govi
3470977917

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Re: [Qgis-user] Importing to postgres db fails on 2.14

[Nikolai Bezdna]

Hi Jorge,

I’ve tested this issue further and figured out that the thing that prevents 
geometry column from being created before this sql checks is geometry type of 
an imported layer. The layer, that I’m trying to import comes from another 
postgres db and is LineStringM (I really do use measures, so can’t just force 
it to 2D).
When trying to save this layer in QGIS in some other format (i.e. shapefile or 
geojson), I get an OGR error: 
"Feature geometry not imported (OGR error: Unsupported WKB type 2002)” 
for every feature in a layer. 
Trying to copy with ogr2ogr gives this: 
"ERROR 1: Reading EWKB with 4-dimensional coordinates (XYZM) is not supported”
But I don’t have a Z ordinate, just X,Y and M. 

For now I can try a workaround like dumping vertexes in 2D with M as an 
attribute, then importing it to a new base and then reconstructing the lines 
back, but that’s very inconvenient. Another option is to use postgres FDW to 
connect to another db and import tables directly, but that’s also not so great. 
I guess common drag’n’drop in qgis browser should work for XYM geometries 
aswell.

Can anyone confirm this issue with LineStringM layer?
Why isn’t XYM supported in OGR and doesn’t get created in QGIS? 

Cheers, Nick

> On 10 Mar 2016, at 23:53, Jorge Gustavo Rocha  wrote:
> 
> Hi Nikolai,
> 
> I was not able to reproduce the problem. I've imported several layers, with 
> different options, changing the geometry column, etc, and everything went 
> smooth, as expected.
> 
> I'm using QGIS 2.14.0, PostgreSQL 9.5.1, Postgis 2.2.1, DB Manager 0.1.20.
> 
> The DB Manager reposts the following privileges (selecting the target DB):
> 
> User has privileges:
> create new schemas
> create temporary tables
> 
> Can you try on the command line, for example, using ogr2ogr with the same 
> database, user and layer? Something like:
> 
> ogr2ogr -f "PostgreSQL" PG:"host=localhost user=xxx dbname=xxx password=xxx 
> active_schema=xxx" -nln tablename data.shp
> 
> Regards,
> 
> J. Gustavo
> 
> 
> Às 20:39 de 10-03-2016, Nikolai Bezdna escreveu:
>> When importing a layer to a postgres db from a database manager window I
>> get an 'Error 8 Loading of layer failed' message.
>> From a postgis log the query part that fails is this one:
>> SELECT has_column_privilege('"myschema"."mytable"','mygeom','UPDATE')
>> And the error from postgres is well expected, because there is no
>> 'mygeom' column of relation 'mytable' yet.
>> Double checked that in pgAdmin.
>> Maybe geometry field should be created earlier?
>> 
>> Can anyone confirm if it's a bug? I'm on 2.14.0.
>> 
>> 
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>> 
> 
> J. Gustavo
> -- 
> Jorge Gustavo Rocha
> Departamento de Informática
> Universidade do Minho
> 4710-057 Braga
> Tel: +351 253604480
> Fax: +351 253604471
> Móvel: +351 910333888
> skype: nabocudnosor

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Re: [Qgis-user] MS Access and QGIS

[Goyo]

I think you should be able to do that according to
http://docs.qgis.org/2.8/en/docs/user_manual/introduction/getting_started.html#command-line-options

Create a QGIS project including the parcels layer, compute the
bounding box of the selected layer(s) in the frontend, invoke QGIS
passing the project file name and the bounding box as parameters to
options:

qgis --project yourproject.qgs --extent xmin,ymin,xmax,ymax

It looks like you could even pass just a postgis layer instead of a
project file, but I don't know whay syntax you should be using.

Goyo

2016-03-08 14:05 GMT+01:00 "Sebastian Teßmer" :
> Hello everybody,
>
> today again something else to ask.
> I have an Access - database, which is stored with a PostGIS database.
> It serves as a kind of front end. Now I want to select a parcel in a form
> and then jump right in QGIS then.
>
> Maybe I would also select multiple parcels in form, which then in QGIS
> are being emphasized.
>
> I know that sounds very utopian, but maybe someone has an idea how to go
> that can
> or perhaps another suggestion on how to implement that.
>
> Thank you so much!
>
> MfG Sebastian
>
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Re: [Qgis-user] Pie charts i QGIS 2.14

[johnrobot]

Hi
I was thinking of setting up the size intervals. Thank you for the
suggestion about expressions, I will look in to that.

Magnus



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Re: [Qgis-user] Importing to postgres db fails on 2.14

[Jorge Gustavo Rocha]

Hi Nikolai,

I was not able to reproduce the problem. I've imported several layers, 
with different options, changing the geometry column, etc, and 
everything went smooth, as expected.


I'm using QGIS 2.14.0, PostgreSQL 9.5.1, Postgis 2.2.1, DB Manager 0.1.20.

The DB Manager reposts the following privileges (selecting the target DB):

User has privileges:
create new schemas
create temporary tables

Can you try on the command line, for example, using ogr2ogr with the 
same database, user and layer? Something like:


ogr2ogr -f "PostgreSQL" PG:"host=localhost user=xxx dbname=xxx 
password=xxx active_schema=xxx" -nln tablename data.shp


Regards,

J. Gustavo


Às 20:39 de 10-03-2016, Nikolai Bezdna escreveu:

When importing a layer to a postgres db from a database manager window I
get an 'Error 8 Loading of layer failed' message.
 From a postgis log the query part that fails is this one:
SELECT has_column_privilege('"myschema"."mytable"','mygeom','UPDATE')
And the error from postgres is well expected, because there is no
'mygeom' column of relation 'mytable' yet.
Double checked that in pgAdmin.
Maybe geometry field should be created earlier?

Can anyone confirm if it's a bug? I'm on 2.14.0.


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J. Gustavo
--
Jorge Gustavo Rocha
Departamento de Informática
Universidade do Minho
4710-057 Braga
Tel: +351 253604480
Fax: +351 253604471
Móvel: +351 910333888
skype: nabocudnosor
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Re: [Qgis-user] Pie charts i QGIS 2.14

[Neumann, Andreas]

Hi Magnus, 

And what exactly isn't working with the exiting diagrams --> Pie Charts
functionality? 

What you list below should all be possible. 

The third point, the size intervals, is a bit more tricky, because by
default, QGIS scales continuous (without fixed interval). But with a
QGIS expression you can also force the size to discrete steps. You could
divide/round the data in the expression to force it into discrete steps
for sizing the pie chart. 

So - can you be more specific - what exactly doesn't work as expected? 

- 

Note, if you don't need pies (no subdivisions), but just proportional
symbols, you should better use the simple renderer, choose a symbol and
use the size-assistant. The size assistant can be found at this
drop-down button next to the Size input widget. 

Andreas 

On 2016-03-11 12:42, johnrobot wrote:

> Hi
> I would like to draw pie charts/circles for a polygon layer using data from
> the attribute table, for example population data. I have tried using
> properties- diagram, but it doesn´t seem to match what I am looking for. I
> would like to see this:
> 
> - Based on attribute values, draw pie charts/circles.
> - Let me choose outline and fill colours/patterns.
> - Let me choose data intervals and the circle size for each interval.
> 
> What would be the best way of achieving this in QGIS? I found
> https://github.com/LCacheux68224/ProportionalCircles, but it seems that I
> have to involve our IT department to install QGIS plugins, since I do not
> have admin rights on my computer.
> 
> Regards,
> 
> Magnus
> 
> --
> View this message in context: 
> http://osgeo-org.1560.x6.nabble.com/Pie-charts-i-QGIS-2-14-tp5255823.html
> Sent from the Quantum GIS - User mailing list archive at Nabble.com.
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[Qgis-user] Pie charts i QGIS 2.14

[johnrobot]

Hi
I would like to draw pie charts/circles for a polygon layer using data from
the attribute table, for example population data. I have tried using
properties- diagram, but it doesn´t seem to match what I am looking for. I
would like to see this:

- Based on attribute values, draw pie charts/circles.
- Let me choose outline and fill colours/patterns.
- Let me choose data intervals and the circle size for each interval.

What would be the best way of achieving this in QGIS? I found
https://github.com/LCacheux68224/ProportionalCircles, but it seems that I
have to involve our IT department to install QGIS plugins, since I do not
have admin rights on my computer.

Regards,

Magnus



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Re: [Qgis-user] QGIS 2.14 report always coordinate in geographic

[Claas Leiner]

Hi,

There ist a new setting option:

Project > Project properties >
General > Coordinate display > Display coordinates using:
You can change Degrees to Map units (m)

Claas

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Re: [Qgis-user] QGIS 2.14 report always coordinate in geographic

[DelazJ]

Hi,
I think there's a kind of bug in the initial display (see
http://hub.qgis.org/issues/14392) but you can fix the coordinate unit  by
setting it in Project properties > General tab > Coordinate Display

2016-03-11 12:20 GMT+01:00 Andrea Peri :

> Hi,
> I install the last qgis 2.14 and notice that in the
> bottom text area where sually are reported the coordinates of mouse
> position are always reported in geographic .
>
> I guess this could be an issue beacuse I have a project with a
> projected reference system (epsg:3003).
> The canvas is confirmed that is in EPSG:3003, but the coordinate are
> reported in geographic.
>
> Is this an issue for ticket system or is a new "evolution" of qgis ?
> :)
>
> Thx.
>
> --
> -
> Andrea Peri
> . . . . . . . . .
> qwerty àèìòù
> -
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[Qgis-user] QGIS 2.14 report always coordinate in geographic

[Andrea Peri]

Hi,
I install the last qgis 2.14 and notice that in the
bottom text area where sually are reported the coordinates of mouse
position are always reported in geographic .

I guess this could be an issue beacuse I have a project with a
projected reference system (epsg:3003).
The canvas is confirmed that is in EPSG:3003, but the coordinate are
reported in geographic.

Is this an issue for ticket system or is a new "evolution" of qgis ?
:)

Thx.

-- 
-
Andrea Peri
. . . . . . . . .
qwerty àèìòù
-
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Re: [QGIS-it-user] [Utenti] Ricerca di vecchie discussioni

[aborruso]

Totò wrote
> Ciao, ho trovato parecchio interessante ed utile questo Bot Telegram,
> ho realizzato un video per dimostrare la semplicità d'uso
> https://www.youtube.com/watch?v=AbrETknkuJ0

Grazie Totò




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[Qgis-user] Geoprocessing Tools give wierd answerd

[Hillers Heather]

Hi,

I have a Multiline layer A with about 900 Features loaded (only a few of those 
are actually multi part geometries)  in QGIS 2.14 and I try to do Vector  -> 
Geoprocessing Tools -> Difference with Layer A as the input vector layer and 
Layer A as the difference layer, expecting to get as a result an empty layer.  
But, the Output Shapefile has ~150 Features in it.  Topology Checker says, 
there are no invalid geometries, but there are about 90 pseudo nodes in the 
layer.  I started snooping around and found other line shapes that behave this 
way.  Have I fundamentally misunderstood what a difference is, or is there some 
specific geometry problem that causes difference to behave oddly?  The use case 
is silly, but I started with comparing an exported shape to its source, got 
weird results, and then tried to compare the source to itself as a sanity 
check.  Now I feel I might have lost sanity.  Help?

Thanks,

Heather
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