Re: [Qgis-user] Micro-Geometry Problems

[Mike Shand]

Steve (or any new QGIS users),

For future reference, it is maybe better practice to digitise polygon sides 
simply as lines and then use one of the line>polygon tools in QGIS, GRASS or 
SAGA.  Advantages are that you only digitise the lines once (much quicker, no 
double digitising) and so only require to use snapping at junctions (less 
change of snapping errors).  Main disadvantage is that you would have to add 
your polygon attribute data after the polygons have been generated rather than 
as you digitise them.

Regards,
Mike
GIS Cartographer
University of Glasgow

On 16/01/2020 14:48, Kirk Schmidt wrote:
Hi All:

This is a classic digitizing issue that can be corrected with GRAS  as Harrisou 
suggests.  If the layer does not get cleaned during the import process, you can 
use the grass functions v.build and v.clean to fix the digitizing slivers and 
incomplete intersections.

Kirk Schmidt



From: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] On Behalf Of DelazJ
Sent: Wednesday, January 15, 2020 3:45 AM
To: dhdeange...@comhem.se
Cc: qgis-user
Subject: Re: [Qgis-user] Micro-Geometry Problems

Hi,
There's also a "snap geometries to layer" Processing algorithm in QGIS that 
could be worth a look.
https://docs.qgis.org/3.4/en/docs/user_manual/processing_algs/qgis/vectorgeometry.html#snap-geometries-to-layer

Regards,
Harrissou

Le mer. 15 janv. 2020 à 08:34, Hernán De Angelis 
mailto:dhdeange...@comhem.se>> a écrit :

Steve,

In my opinion this is where GRASS topological vector model shines. One 
suggestion would be to import these vectors into a GRASS location and let GRASS 
clean the polygons and fix the topology automatically during import. My 
experience with similar problems is that after the import and cleaning there 
would be few if any errors of the sort you mention. In the worst case any 
surviving error is found it could in principle be solved by deleting the 
stubborn surface and digitizing it again. It will definitely not take two weeks 
of work!

Good luck!

H.


On 2020-01-14 22:51, smiller...@cfl.rr.com wrote:
All-

I have digitized a land use/land cover layer as individual polygons.  The snap 
options were used and, for most vertices, the snap was precise.  A vertex in 
polygon A has a precise match to a vertex in neighboring polygon B.

But in 582 out of 2799 polygons, there are mis-matches in adjoining vertices 
that are only evident if you zoom into the layer at a magnification (i.e., a 
scale) of from 2:1 to 4 to 1.  I have spent a couple of weeks trying to 
remedy these by hand using the Vertex Tool and other means.  My question is 
this: is there an automated way in QIS to detect and remedy these situations?

Thanks,
Steve Miler


___

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 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

Re: [Qgis-user] Vector Affine trouble

[Mike Shand]

Hi Rutger,

It would be useful to know the source for the digitised contours and the 
procedure you used to create the shapefile.


You may have three options:
1. Go back to Adobe Illustrator and digitise some well defined known 
reference points such as grid intersections or road junctions, with this 
it should be possible in QGIS to move, scale and rotate the vector 
contours to fit OpenStreetMap or OS Opendata online imagery of Mull and 
Iona.
2. Request someone with the QGIS plug-ins qgisAffine or VectorBender 
working to do the transformation for you.
3. Request someone with ArcGIS Spatial Adjustment to do the 
transformation for you.


Regards,
Mike

On 13/01/2019 21:11, Rutger Emmelkamp wrote:

Hello everybody,

I’ve posted this question before and had some good suggestions (which 
I tried as good as I can) but I’m not there yet.
I have this intricate contour lines map (.shp file) and after 
importing, it sits in Africa. Now I want to drag it to Scotland and 
make it fit. It’s not just the position, it also requires rotating and 
stretching to make it fit.
I can’t get the qgisAffine or VectorBender plugins to work on qgis 
3.4.3. and I don’t have any experience with GRASS7 commands which was 
one suggestion. (I wil look into that)


Meanwhile, are there any other suggestions?

Thanks again.

Rutger











Op 13 jan. 2019, om 15:29 heeft Mike Shand <mailto:mike.sh...@glasgow.ac.uk>> het volgende geschreven:


Hi Rutger,

If you have successfully converted your Adobe Illustrator file into 
an ESRI shapefile (using Avenza MaPublisher or DXf export ?) please 
first check the quality of the linework in QGIS. Any Illustrator 
vector bezier curves will probably have been simplified to straight 
lines.  To avoid the lines being too generalised use the Add Anchor 
Points option in Illustrator several times if necessary to ensure the 
curves are replicated by short straight line sections.


If you are using MaPublisher 
<http://download.avenza.com/Downloads/Docs/MAPublisher/MP90_TutorialGuide.pdf> 
there is the option to add the projection/datum.


Another alternative using Dxf format is:
http://christopherwesson.azurewebsites.net/2016/04/08/importing-vectors-from-illustrator-into-a-gis-with-georeferencing/#sthash.O3XCCqoR.dpbs

Regards,
Mike

On 12/01/2019 22:37, Rutger Emmelkamp wrote:

Hello everybody,

Hope someone can help me out this Saturday night (or Sunday or Monday) but no 
hurry!

How to georeference an Illustrator vector image (contour line map) from a 
specific area?
I have qgis 3.4.3 installed and qgisAffine and Vector Blender plugins don’t 
work for this version.

I managed to turn the file into a .shp file and I see it somewhere off the 
coast of Ghana (coordinates 0,0) but how do I drag it into place?
I think I’m looking for a Vector Affine Transformation plugin or menu but can’t 
find it.

Hope someone can help me in the right direction.

Thanks and have a nice weekend.

Rutger
___
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

Re: [Qgis-user] Vector Affine trouble

[Mike Shand]

Hi Rutger,

If you have successfully converted your Adobe Illustrator file into an 
ESRI shapefile (using Avenza MaPublisher or DXf export ?) please first 
check the quality of the linework in QGIS.  Any Illustrator vector 
bezier curves will probably have been simplified to straight lines.  To 
avoid the lines being too generalised use the Add Anchor Points option 
in Illustrator several times if necessary to ensure the curves are 
replicated by short straight line sections.


If you are using MaPublisher 
 
there is the option to add the projection/datum.


Another alternative using Dxf format is:
http://christopherwesson.azurewebsites.net/2016/04/08/importing-vectors-from-illustrator-into-a-gis-with-georeferencing/#sthash.O3XCCqoR.dpbs

Regards,
Mike

On 12/01/2019 22:37, Rutger Emmelkamp wrote:

Hello everybody,

Hope someone can help me out this Saturday night (or Sunday or Monday) but no 
hurry!

How to georeference an Illustrator vector image (contour line map) from a 
specific area?
I have qgis 3.4.3 installed and qgisAffine and Vector Blender plugins don’t 
work for this version.

I managed to turn the file into a .shp file and I see it somewhere off the 
coast of Ghana (coordinates 0,0) but how do I drag it into place?
I think I’m looking for a Vector Affine Transformation plugin or menu but can’t 
find it.

Hope someone can help me in the right direction.

Thanks and have a nice weekend.

Rutger
___
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

Re: [Qgis-user] Arusha Bioinformatics Workshops 2015 - QGIS; R stats.

[Mike Shand]

Final bookings are still being accepted for the courses offered below.  
Full Course Details and Registration can be found from the TZ CRC 
website <http://www.tzcrc.org/wp/2015-skills-workshop/> and links below.
The November / December and training days are $50 - $75 per day, the 
software used is all cross-platform FREE and OpenSource (QGIS; GPS 
Babel; R etc)


Please share this with colleagues or post on other relevant lists.

Regards,
Mike


Arusha Bioinformatics Workshops 2015

GIS Mapping and statistics courses for conservation.

The Tanzania Conservation Resource Centre is pleased to announce a new 
series of workshops for Nov-Dec 2015. Workshops will be held in Arusha, 
Tanzania, in the week before and week after the TAWIRI Scientific 
Conference.


The Centre’s training focusses on high-quality _FREE_and 
Open-Sourcesoftware, without the need for costly licenses and upgrades. 
Trainers have years of experience in both use and development of the 
software.


Venue:Courses will all be held in Arusha at Solomon House (near the 
Clocktower)


Costs:Course costs vary by number of days and include course materials 
and lunch only.


Scholarships:A very limited number of places are available for 
attendance, and students are advised to seek positions early.


For more information or inquiries regarding the skills workshop 
training, see the detailed course descriptions and register on our 
website <http://www.tzcrc.org/wp/2015-skills-workshop/>: 
http://www.tzcrc.org/wp/2015-skills-workshop/


Email:worksh...@tzcrc.org<mailto:worksh...@tzcrc.org>Phone: +255 684 813 848

Course



Dates and costs

Introduction to statistics with R

"R is a free, open-source language and software, which is becoming one 
of the most popular options for statistics and graphics in the sciences. 
It is recommended for those needing to use statistics to analyse data 
who have little or no experience of statistics. The course would also be 
an ideal introduction to R for students with experience of other 
statistical packages."


Trainer: Rob Critchlow (Univ. of York)

Prerequisites: Basic computer and mathematics skills.



23-27 Nov


US$375

5 days.



Cartographic design and map publication with QGIS

How to create and design high quality maps with QGIS.

The course is aimed at those who wish to produce high quality maps for 
standalone printing or as part of  reports and other publications.


Trainer: Mike Shand (University of Glasgow)

Prerequisites: A working knowledge of GIS and experience in map 
production. Sense of creativity in professional content writing for 
official purpose.




25-27 Nov


US$225

3 days

GPS for fieldwork mapping

The course is aimed at fieldworkers who wish to quickly & efficiently 
map and view their GPS data while in the field or in the office.


Trainer: Mike Shand (University of Glasgow)

Prerequisites: A basic working knowledge of computers and understanding 
of GPS and its terminologies.




30 Nov- 01 Dec


US$100

2 days

QGIS for mapping and cartography

An introduction to QGIS (a free GIS application). The course is aimed at 
fieldworkers who wish to produce professional maps from their fieldwork 
data and combining  it with other sources.


Trainer: Mike Shand (University of Glasgow)

Prerequisites: A basic working knowledge of computers and some 
experience working with map data captured through fieldwork.




7-11 Dec


US$375

5 days

Advanced QGIS with PostGIS

Setting up, managing and using a geodatabase in PostGIS, which offers 
advanced GIS methods and analysis.


Trainer: Paolo Cavallini (Faunalia)

Prerequisites: Good working knowledge of QGIS, and a desire to develop 
skills in PostGIS and analysis.




7-9 Dec


US$300

3 days



Tanzania Conservation Resource Centre

PO Box 485  •  Arusha, Tanzania

*+255 684 813 848  • *www.tzcrc.org <http://www.tzcrc.org>


___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] QGIS/GPS and R Workshops Arusha, Tanzania

[Mike Shand]

*This may be of interest to our Subscribers or their colleagues working 
in East Africa.*


Arusha Bioinformatics Workshops 2015

GIS Mapping and statistics courses for conservation.

The Tanzania Conservation Resource Centre is pleased to announce a new 
series of workshops for Nov-Dec 2015. Workshops will be held in Arusha, 
Tanzania, in the week before and week after the TAWIRI Scientific 
Conference.


The Centre’s training focusses on high-quality freeand 
open-sourcesoftware, without the need for costly licenses and upgrades. 
Trainers have years of experience in both use and development of the 
software.


Venue:Courses will all be held in Arusha at Solomon House (near the 
Clocktower)


Costs:Course costs vary by number of days and include course materials 
and lunch only.


Scholarships:A very limited number of places are available for 
attendance, and students are advised to seek positions early.


For more information or inquiries regarding the skills workshop 
training, see the detailed course descriptions and register on our 
website <http://www.tzcrc.org/wp/2015-skills-workshop/>: 
http://www.tzcrc.org/wp/2015-skills-workshop/


Email:<mailto:worksh...@tzcrc.org>workshops@tzcrc.orgPhone: +255 684 813 848

Course



Dates and costs

Introduction to statistics with R

"R is a free, open-source language and software, which is becoming one 
of the most popular options for statistics and graphics in the sciences. 
It is recommended for those needing to use statistics to analyse data 
who have little or no experience of statistics. The course would also be 
an ideal introduction to R for students with experience of other 
statistical packages."


Trainer: Rob Critchlow (Univ. of York)

Prerequisites: Basic computer and mathematics skills.



23-27 Nov


US$375

5 days.



Cartographic design and map publication with QGIS

How to create and design high quality  maps with QGIS.

The course is aimed at those who wish to produce high quality maps for 
standalone printing or as part of  reports and other publications.


Trainer: Mike Shand (University of Glasgow)

Prerequisites: A working knowledge of GIS and experience in map 
production. Sense of creativity in professional content writing for 
official purpose.




25-27 Nov


US$225

3 days

GPS for fieldwork mapping

The course is aimed at fieldworkers who wish to quickly & efficiently 
map and view their GPS data while in the field or in the office.


Trainer: Mike Shand (University of Glasgow)

Prerequisites: A basic working knowledge of computers and understanding 
of GPS and its terminologies.




30 Nov- 01 Dec


US$100

2 days

QGIS for mapping and cartography

An introduction to QGIS (a free GIS application). The course is aimed at 
fieldworkers who wish to produce professional maps from their fieldwork 
data and combining  it with other sources.


Trainer: Mike Shand (University of Glasgow)

Prerequisites: A basic working knowledge of computers and some 
experience working with map data captured through fieldwork.




7-11 Dec


US$375

5 days

Advanced QGIS with PostGIS

Setting up, managing and using a geodatabase in PostGIS, which offers 
advanced GIS methods and analysis.


Trainer: Paolo Cavallini (Faunalia)

Prerequisites: Good working knowledge of QGIS, and a desire to develop 
skills in PostGIS and analysis.




7-9 Dec


US$300

3 days




Tanzania Conservation Resource Centre

PO Box 485  •  Arusha, Tanzania

*+255 684 813 848  • *www.tzcrc.org <http://www.tzcrc.org>


___
TZGISUG mailing listtzgi...@lists.habari.co.tz
List Info:http://mail.habari.co.tz/mailman/listinfo/tzgisug
Web Site:http://www.tzgisug.org
Facebook:https://www.facebook.com/tzgisug

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] How to reference a map with qGIS

[Mike Shand]

Laurence,

In Print Composer on the COMPOSITION tab you will find a World file on 
tick box which will give you the required tfw, jgw, pgw etc files for 
your exported raster.  It is not on the Item tab as you may have more 
than one map item to compose (e.g. inset or location map).



Regards,
Mike Shand

On 23/08/2015 02:29, James Keener wrote:
When you export from composer, it's just a tiff, not a geotiff 
(someone else correct me if I'm wrong!)


A quick-and-dirty solution may be to fake the tiff that was exported 
from the composer and georefernce it against your project, and save 
that as a geotiff.


Jim

On August 22, 2015 9:22:29 PM EDT, Laurence Béchet 
bechet.laure...@gmail.com wrote:



Hi,

I'm investigating the use of electronic devices to record data
when people are doing field work. Apps like PDF Maps require
referenced maps in pdf or tiff format. While it's quite easy to
design a referenced map from a GIS project with ArcGIS, it's seems
to be quite a challenge with qGIS.

I have a qGIS project with different shapefiles. If I use
/project/save as image/ and create a .tiff file, then use
/raster/conversion/translate/ the tiff file into a geotiff, the
result is georeferenced. But the map itself is not very exciting.

If I use the composer to create the .tiff file and then use
/raster/conversion/translate/ the tiff file into a geotiff (as in
the previous case), the final map is not georeferenced.

At this stage I'm kind of lost, as the composer allows setting
like GDAL, CRS etc.. and everything seems to be set properly.

I'm on Windows7 pro, with qGIS Wien 2.8.3 (I've got a rendering
pbe with version 2.10 which forced me to downgrade to 2.8).

Would someone have any ideas? What's the best practice to create
geo referenced tif or pdf?

Regards
Laurence Bechet




Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

-- Sent from my Android device with K-9 Mail. Please excuse my brevity.

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] MAPPING EVENT - Glasgow, Scotland

[Mike Shand]

Dear All,

I hope this event, which is open to all, may be interest to those 
working with QGIS, OpenData or involved in Map Design.


*Day 3* (Tuesday 2 September) may be of particular interest to this 
group as it includes a NeoCartography session featuring speakers on such 
topics as QGIS; MapBox studio; SOM Scotland 2014 (openstreetmap); Free 
and OpenSource Tools.  The other session focuses on Map Design for 
Printed and Digital Media and includes speakers from Collins Bartholomew 
Atlases; Ordnance Survey; Safari maps; and the University of Canterbury.


EVENT: The Society of Cartographers 50th Anniversary Summer School 
Conference of Cartography

VENUE: University of Glasgow
DATES: 31 August - 2 September 2014
REGISTRATION COSTS: from £112 (3 days); from £72 (Day) - Bookings 
http://www.soc.org.uk/soc2014/booking.html
PROGRAMME: Full Programme -http://www.soc.org.uk/soc2014/program.html 
http://www.soc.org.uk/soc2014/program.html

*
**ONLINE booking http://www.soc.org.uk/soc2014/booking.html**is 
available until Friday 22 August,* after this date booking will be 
accepted by Cheque or Cash only.


Regards,
Mike Shand
Local Organiser

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] SOC 50th Annual Conference / Summer School of Cartography, Glasgow, Scotland, UK, 2014

[Mike Shand]

Dear All,

I hope this may be of interest to some on this list, QGIS, OpenSource 
and OpenData will feature in the Programme.


*SOCIETY of CARTOGRAPHERS
50th Annual Conference / Summer School of Cartography
UNIVERSITY of GLASGOW**
Scotland, U.K.
**31 August - 2 September 2014*

The Programme and Booking for this event is now available at:
http://www.soc.org.uk/soc2014/index.html

*The event is open to members and non-members*.

*THEMES:*
*Past, Present  Future Cartographies
**The Impact of Maps, Cartography and Mapping Technology
**Map Design  Map Layout for Printed  Digital Media
**ICA Commission on Neocartography
*• Innovation in proprietary online mapping systems
• Innovation with open source mapping services
• Interesting map designs in the new milleau
• Designing maps for mobile devices
• Mapping from social media and crowdsourced data

*COSTS:***
Single Day attendance fee £65 (member); £81 (non-member) - early bird rate
Three Day attendance fee £101 (member); £126 (non-member) - early bird rate
/Accommodation  Meals also available for separate booking/.

*DISCOUNTS*:
*Early Bird 10% Registration discount available until 30 JUNE
*Additional SOC MEMBER DISCOUNTS (20%) on offer.

*BURSARIES (4)*:
TWO BURSARIES will be offered to members attending the Summer School for 
the FIRST time.

TWO BURSARIES will be offered to student and overseas members.

Regards,
Mike Shand
Local Organiser
University of Glasgow
mike.sh...@glasgow.ac.uk mailto:mike.sh...@glasgow.ac.uk
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] GPS issue on android tablet

[Mike Shand]

Zoltan,

I suggest you create a Csv file and plot the points on a large scale map 
or hi-res satellite image.
You say varies very widely, a quick check indicated the max. variation 
between your points is approx 8m and the min. approx 1m.


I would say if you are getting 3m GPS accuracy that is pretty good if 
you are outside the US or Europe.  I assume you are using a dedicated 
GPS unit attached to your Tablet and not a built-in GPS on your Tablet.
Bear in mind that the 3m accuracy deviation (imagine a 3m radius circle 
from where you mark the point) can be in any direction, so if you are 3m 
E out with first reading and 3m W with the second reading the error 
between the point could be 6m.


Mike


On 04/06/2014 10:14, Zoltan Szecsei wrote:

On 2014/06/04 11:07, Giuseppe De Marco wrote:

hello, I've been using Qgis on android tablet (samsung galaxy tab 2)
and I've been experimenting GPS connection.
The issue is that even if Qgis finds and use several satellites (9 or more)
precision never gets under 3.0 meters but what is strange is that
coordinates value fro the same spot varies very widely:
TimeCoordinates   Altitude
14:39:36   41.69528959 13.26464738  343.1
14:39:54   41.69529880 13.26466761  341.8
14:40:06   41.69528519 13.26470222  340.4
14:41:18   41.69528944 13.26472418  341.1
14:41:42   41.69529608 13.26471821  341.8
14:41:54   41.69530621 13.26470892  342.5

I have colleagues who have experienced the same.
Has anyone else experienced the same issue?
Is that depending on GPS device or could it be a software related
issue?


There are probably 1 reasons for this.
I am surprised that you even think you are getting sub 5m accuracy.
Please plot the points on a cadastral map (or some basemap that is
guaranteed accurate) and see what you are really getting.
You also don't say whether you are in a tree'd or urban (or whatever)
area - but observing 9 satellites suggests somewhere in the open.

For professional GPSes, to get sub 10cm accuracy, you need to observe
for 30-60 minutes, and do post processing.

I am not a surveyor, so my info may be not 100% - Please can a surveyor
or someone well experienced in these issues chip in.

Regards,
Zoltan



___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Mysterious coordinates (Italy)

[Mike Shand]

Hi Sarah,

I think what you may have for (N 3904,668 - E 1652,784) is actually 
degrees, minutes and decimal minutes:

N 39d 04min .668dec min (or 40.08sec [.668*60]) = N 39d 04min 40.08 sec
E 16d 52min .784 dec min (or 47.04sec [.784*60]) = N 16d 52min 47.04 sec
or in decimal degrees
N 39.0778
E 16.879733
This puts the point about 7km south of Roccabernarda.

In the UK and US a dot is usually the decimal point, in Europe a comma 
is often the decimal point.


Regards,
Mike

 should fall in the vicinity of coordinates: N 391373746 - E 16,8745837 
(Roccabernarda in the province of Crotone).


On 12/03/2014 08:01, Lynkos wrote:
Solve one mystery and another appears! This isn't really a QGIS issue, 
but I'm wondering if there's someone out there who'd be willing to 
give me a hand anyway.
I'm processing a series of data sheets of bird observations from 
volunteer observers throughout Italy. We specify decimal degrees, 
WGS84 (UTM 33 o 32N), but as you can imagine, the coordinates come in 
all shapes and sizes and trying to standardise them is a real challenge.
I'm having a particular problem trying to understand (and therefore 
subsequently convert), the following group of coordinates:


N 3915.452  E 1655.732

N 3913.887  E 1655.653

N 3905.717  E 1703.311

N 3902.444  E 1701.229

N 3902.936  E 1701.405

N 3904.791  E 1654.796

N 3904.668  E 1652.784**

N 3906.065  E 1657.129

N 3905.403  E 1701.755

N 3909.825  E 1659.315

N 3909.479  E 1657.053

N 3912.038  E 1655.576

N 3912.436  E 1656.515

N 3911.025  E 1659.291

N 3911.148  E 1659.506

N 3911.347  E 1659.521

N 3911.824  E 1659.739

They should all fall in the province of Crotone in Calabria, Italy, 
but nothing I've tried gets them there :-(.



To give an idea, the coordinates with an asterix (N 3904,668 - E 
1652,784) should fall in the vicinity of coordinates: N 391373746 - E 
16,8745837 (Roccabernarda in the province of Crotone).


Thanks for any help, and my apologies if the answer is so simple a 
primary school kid could get there :-(, Sarah.



--
*Sarah Gregg*
immagini - parole - territorio - natura
Web:www.wild-eyes.eu http://www.wild-eyes.eu/


___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Query re: Area measures

[Mike Shand]

Hi Hugh,

I did some work recently on the Tanzania 2012 Census District file from 
downloaded from the NBS website plus the census data.
I converted the Arc60 lat/long file to a projected WGS 84 UTM zone 36S 
file in QGIS, calculated the Geometry in sqkms then exported the file to 
WGS84 lat/long.  This seemed to work fine as I was then able to 
calculate the population density.


Any problems I can send it offline.

Mike

Mike Shand,
FRSGS; MAppSci; FBCartS,
Honorary Research Fellow
(GIS Cartography)
Geographical  Earth Sciences,
University of Glasgow,
Scotland, U.K.
Tel: +44 (0)141 330 4780
E-mail: mike.sh...@glasgow.ac.uk mailto:mike.sh...@glasgow.ac.uk
Hon. Secretary:  Society of Cartographers http://www.soc.org.uk/
HOME PAGE  TANZANIA Links: 
http://www.gla.ac.uk/schools/ges/staff/mikeshand/ 
http://web2.ges.gla.ac.uk/%7Emshand



The University of Glasgow, charity number SC004401


On 13/09/2013 17:13, Wenban-Smith wrote:
My QGIS project uses a .shp file of 179 districts in Tanzania. I wish 
to know the area of each district in sq km but the Geometry-$area 
function (in the field calculator of the Attributes table) only 
reports areas in decimal degrees (whereas the individual area 
measuring tool from the toolbar reports sq km but is tedious to use 
and not precise). It appears looking under Settings/Project Properties 
[General tab] that it is possible to convert to meters only when CRS 
transformation is disabled but there is no guidance how to do this 
(nor why this should be necessary). I have tried converting the CRS 
from Arc 1960 to one the UTM ones but this did not help.

Grateful for any advice more experienced users can offer.
Hugh W-S


___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] QGIS to ArcGIS

[Mike Shand]

HI Andreas,

As both an ArcGIS and QGIS user I often run courses and workshops for 
new or potential users particularity in the UK and Africa.


I currently have a client who uses ArcGIS as their main mapping software 
but has limited licences available.  They wish to have their field staff 
trained in using basic GIS to import and view GPS data collected in the 
field over GIS features (rivers, roads, admin bdys etc) or Google/Bing 
imagery with a view to producing location type maps for draft reports 
while out of the office.  It is then their intention to bring the maps 
into ArcGIS to enable their professional GIS cartographers to produce 
any final mapping.  It would be ideal to be able to bring both the QGIS 
symbol design and layout into ArcGIS rather than having to redo this 
work again in ArcGIS using the GIS data files (shapefile; gpx etc).


As I suspected it now looks like this will be the only solution, I will 
therefore encourage the client to create custom symbol specifications 
and layout templates to ensure the mapping has a consistent design and 
layout.  QGIS will undertake all the data input and analysis tasks 
required by the client's field staff and has many other advantages of 
use due to is portable nature.


As a professional cartographer I find the symbol design and layout 
facilities in QGIS very limiting for producing publication quality maps 
and would normally undertake any final map design and production in 
ArcGIS or Adobe Illustrator (with Avenza MaPublisher).


Thanks to all for their comments.

Regards,
Mike


Mike Shand,
FRSGS; MAppSci; FBCartS,
Honorary Research Fellow
(GIS Cartography)
Geographical  Earth Sciences,
University of Glasgow,
Scotland, U.K.
Tel: +44 (0)141 330 4780
E-mail: mike.sh...@glasgow.ac.uk mailto:mike.sh...@glasgow.ac.uk
Hon. Secretary:  Society of Cartographers http://www.soc.org.uk/
HOME PAGE  TANZANIA Links: 
http://www.gla.ac.uk/schools/ges/staff/mikeshand/ 
http://web2.ges.gla.ac.uk/%7Emshand



The University of Glasgow, charity number SC004401



___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] QGIS to ArcGIS

[Mike Shand]

You can see some of the maps made with only QGIS at 
http://www.flickr.com/groups/qgis/pool
Some very impressive maps, QGIS can do most mapping tasks and does them 
very well, I look forward to the official release of QGIS 2.0.
Does it now support both CMYK and RGB for symbol design and has any 
changes been made to the Print Composer and its export options ?


That's very surprising: please be specific as to what is missing for you.
It is difficult to be specific and it could be quite a long list. Even 
with ArcGIS I find there are limitations on customised symbol design and 
layout facilities, so often Adobe Illustrator is my choice for final 
mapping and GIS for map analysis and manipulation of spatial data.My 
main gripe about both ArcGIS and QGIS is the unfriendly nature of Page 
Layout and Print Composer.  I guess that being a cartographer for over 
40 years (GIS user for over 20 years) I am probably too demanding on my 
mapping software as I desire to be able to easily customise everything 
from a design and layout point of view and will never accept default 
solutions.


Regards,
Mike
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] QGIS to ArcGIS

[Mike Shand]

Hi Andreas,

Many thanks for your extensive response which makes some very good 
points and has enlightened me on recent improvements that exist in v2.0.
I will take on board your suggestions and also monitor more closely the 
posts on the  QGIS list and on GIS stackexchange.


Regards,
Mike

On 04/06/2013 13:22, Andreas Neumann wrote:

Hi Mike,

-

As to your initial request about converesion from QGIS to ArcGIS
projects or vice versa I still think that is very unlikely to happen. It
is a kind of Sisyphus work where you are never finished and whenever
there are new versions of either software you are set back again. Also
neither the mxd nor the qgs format is stable and documented. So do not
expect this to happen.

-

As others have pointed out, QGIS 2.0 adds a lot for better cartography:

* easier print composer (with snapping/guidelines)
* new HTML widget and improved text area, optionally with expressions
* better serial printing
* blending in the print composer
* multi-column legends and more legend options

Labeling:
* many more font-properties
* expressions for data-defined properties
* label backgrounds: simple shapes or SVG
* drop shadows
* easy to work with layers where parts of the features are manually
labeled and others automatically

Blending

Symbology:
* data-defined symbology with expressions on the symbol level
* separation of layer grouping and layer order
* improved rule-based symbology
* units can be mixed (e.g. you can define an offset value in m and the
stroke-width in mm)

The expression editor has many more functions that are quite powerful
and can be used with symbology and labeling.

If you can point us to the missing features that still force you to use
ArcGIS or Illustrator, please let us know. It is the goal of the QGIS
community to provide a tool where the cartographers do not have to
export their work to finish it in a different software. We want to be as
good as or better as ArcGIS regarding Cartography.

Often there is also the case that people do not know all the features of
QGIS and simply do not know how to accomplish things with QGIS. In this
case it may be good to consult this mailinglist or GIS stackexchange.
Sometimes also the help or manual could/should be improved.

One such case is that people have the impression that they cannot easily
move, rotate and scale text in QGIS, but once you add the necessary
data-base fields that is easily possible.

If you have concrete proposals, please consider writing feature requests.

Thank you,
Andreas




___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] QGIS to ArcGIS

[Mike Shand]

Dear Users,

Am I correct in thinking that it is currently not possible to convert a 
QGIS project file (.qgs) to an ArcGIS map file (.mxd).

I know it can be done in reverse using the MXD2QGS Tool in ArcToolbox.

Mike
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user