Re: [Qgis-user] What hardware for QGIS

neil2 Thu, 07 Jun 2012 05:39:17 -0700

Hi,

Thanks for the replies, very helpful.

Looks like I will be going for Ubuntu VMs for Q-GIS, but a fullseperate windows boot for Arc and Manifold.

I assume I can reference any drive on the machine from Ubuntoregardless of whether it is in a Windows file system or the Mac filesystem (i.e. so I can do part of the work such as output cartography inArc/Manifold)?


Thanks again,

Neil

On Fri, 01 Jun 2012 02:46:36 -0700, qgis-user-requ...@lists.osgeo.orgwrote:

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Today's Topics:

   1. Re: What hardware for QGIS (Harald Hofmann)
   2. OGRS2012 :: CFP deadline extension to June 15th (Olivier ERTZ)
   3. Re: Query Layer / Rule Based Rendering Problem (James Stott)
   4. Re: Query Layer / Rule Based Rendering Problem (Nathan Woodrow)



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Message: 1
Date: Fri, 01 Jun 2012 08:00:06 +1000
From: Harald Hofmann <harald.hofm...@monash.edu>
To: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] What hardware for QGIS
Message-ID: <4fc7e9e6.70...@monash.edu>
Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"

Hi Neil,

I run QGIS on an iMac i3 (12GB RAM) and on a MacBook Pro i7 (8GBRAM).

Both work fine.
Installation is super easy. Just follow William Kyngesburye's
instructions as Lee has already mentioned.

I think, and I am neither a GIS nor a QGIS specialist (just a very
limited user), combining QGIS with GRASS gives you the same range of
functionality as ArcGIS has.

Again, I am not a hard core GIS person but I used it a bit forspatial

modelling of hydrogeological and hydrological projects.
The GRASS installation is very easy on a Mac, too (again, follow
William's instructions ... Thanks William!!!)

I also had run an ArcView version 9.3 on a virtual computer (on the

iMac) using VirtualBox and Windows XP with a memory allocation of4GB.That also worked fine without any issues. It certainly depends alsoon

what you want to do. I am not sure about ArcInfo and a Dongle
compatibility, referring to Lee's answer.

There is only one thing that I don't like that much with QGIS, whichismaking and editing good looking maps for presentations orpublication.It seems a bit clunky to me (e.g. scale issues between QGIS desktopand

map composer, rotation of labels (I have managed it but it took me
forever to find out how), etc.).

It is absolutely likely that I don't know all the tricks and tweakshow

to use it but this process seems to be a bit easier in Arc. I usually

export the map and do the fine editing in a graphics software;however,

it sometimes becomes a bit cumbersome when there is lots to edit that
potentially could be done much easier by editing a layer in the GIS.
(to all the others, please comment on that. I want to learn  ... )

Hope that helps,

Cheers,
Harald



On 1/06/12 01:41, Lee Hachadoorian wrote:

Hi Neil,
I'm not a Mac user, so these partial answers are based on runningQGIS
on Ubuntu Linux and also running ArcGIS in a VM.

On Thu, May 31, 2012 at 4:56 AM,<ne...@ansergis.net>  wrote:
Hello,
I am just getting to know QGIS having taken a brief two dayoverview course
at GISRUK 2012 and realised that it really is becoming a practical
alternative to Arc.
One of the many attractions of it is the possibility to also escapefrom
windows.
So I am looking at buying an Apple Mac and was hoping for someadvice :
a) What are the limits to the resources that QGIS can realisticallyuse(i.e. in the same way that ArcMap is still pretty much stuck withsinglecore 32bit processing so there isn't much point sticking 16Gig ofmemory in
a machine running it).
b) If I do go with Mac, am I better to install the Mac version ofQGIS or
run Linux also.
Installation on Linux is *probably* more straightforward. For
installing on Mac, one of my students found
http://www.kyngchaos.com/software/qgis helpful. The only reason Ican
think of to run QGIS in Linux instead of Mac is if you expect to be
regularly working with other Linux software and don't want to keep
switching OSes. I would definitely try it on Mac first if that'syour
preferred OS.
c) As I am unlikely to entirely escape ESRI, has anyone experienceof
running ArcGIS on a windows simulator? (i.e. do I need to divide my
resources between two machines).
ArcGIS runs fine in a VM. You may run into problems if you need torun
a version like ArcInfo that requires a hardware dongle for
authentication. I've only been using a version requiring an
alphanumeric key. A coworker who tried to get ArcInfo running on a
Windows XP guest on a Fedora host eventually just gave up.

You do have to divide your resources between machines, but given how
much RAM most machines come with these days, that's usually not much
of a problem (until you start talking about running multiple guest
OSes simultaneously). If you still have access to WinXP, I would
consider running Arc on that because of the minimal resource
requirements. 1-2 GB of RAM is all you will need (and you could getby
on<1 GB of RAM) assuming the guest OS isn't running anything other
than Arc. Make sure to dedicate some of your video memory to theguest
OS.
d) On the course we ran the linux version of QGIS on a virtualmachine. Thishas some attractions in terms of managing various clients projects.But what
are the performance issues?
Process wise I am likely to need to cover the gamut, fromstraightforward
overlay to process models, 3D graphics and visualisation.
At my job I run QGIS in an Ubuntu VM on a Windows host (giving it 4
out of 12GB of RAM). I haven't noticed any performance issues. The
things that are typically slow elsewhere, e.g. multiple layers with
many (1000s) features, are still slow, but everything else performs
the same as a "real" OS of the same specifications.

Best,
--Lee



--
Harald Hofmann
Research Fellow PhD - Hydrogeology
School of Geosciences - Monash University
Wellington Rd, Clayton, Victoria 3800
Australia
Phone: +61 3 99055786

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Message: 2
Date: Fri, 01 Jun 2012 10:48:15 +0200
From: Olivier ERTZ <olivier.e...@heig-vd.ch>
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] OGRS2012 :: CFP deadline extension to June 15th
Message-ID: <4fc881cf.8030...@heig-vd.ch>
Content-Type: text/plain; charset=windows-1252; format=flowed


----------------------------------------------------------------------------
OGRS2012 :: CALL FOR PAPERS DEADLINE EXTENSION (closing at June 15th)
Open Source Geospatial Research and Education Symposium

October 24 ? 26, 2012 in Yverdon-les-Bains, Switzerland
Hosted by School of Business and Engineering Vaud (HEIG-VD)

Website: http://www.ogrs2012.org
Contact: c...@ogrs2012.org

-----------------------------------------------------------------------------

(our apologies for cross-postings)
Dear colleagues,
the program committee is pleased to announce an extension of the
submission deadline until June 15th. All information to submit a
presentation, a workshop, a poster or a discussion group subject is
available on the symposium website : http://cfp.ogrs2012.org.

If you were short in time, please consider these last weeks to submit
your contribution. We look forward to read your contribution proposal
and to see you in Yverdon-les-Bains.

We would appreciate if you could kindly distribute this call to other
interested parties of your acquaintance.

Please note, registration for OGRS2012 will soon open in early June.

Best regards,
OGRS2012 program committee.



------------------------------

Message: 3
Date: Fri, 1 Jun 2012 10:31:22 +0100
From: "James Stott" <james.st...@npaconsult.co.uk>
To: <qgis-user@lists.osgeo.org>
Cc: qgis-develo...@lists.osgeo.org
Subject: Re: [Qgis-user] Query Layer / Rule Based Rendering Problem

Message-ID:<b398947dcab85d46809151e678999f21060fd...@srv01.npa.LOCAL>

Content-Type: text/plain;       charset=utf-8

To update this post,

I have compared the project file code for both the layer that worksand

the layer that doesn't and I have found differences in the

customproperties section. This section does not exist in the layerthat

works - it only exists for the layer that I copied the style for.
Removing it makes the layer show on the map.

<customproperties>
                <property key="labeling" value="pal"/>
                <property key="labeling/addDirectionSymbol"
value="false"/>
                <property key="labeling/bufferColorB" value="255"/>
                <property key="labeling/bufferColorG" value="255"/>
                <property key="labeling/bufferColorR" value="255"/>
                <property key="labeling/bufferSize" value="1"/>

<property key="labeling/dataDefinedProperty0"value=""/><property key="labeling/dataDefinedProperty1"value=""/>

                <property key="labeling/dataDefinedProperty10"
value="16"/>
                <property key="labeling/dataDefinedProperty11"
value=""/>
                <property key="labeling/dataDefinedProperty12"
value=""/>
                <property key="labeling/dataDefinedProperty13"
value=""/>
                <property key="labeling/dataDefinedProperty14"
value=""/>

<property key="labeling/dataDefinedProperty2"value=""/><property key="labeling/dataDefinedProperty3"value=""/><property key="labeling/dataDefinedProperty4"value=""/><property key="labeling/dataDefinedProperty5"value=""/><property key="labeling/dataDefinedProperty6"value=""/><property key="labeling/dataDefinedProperty7"value=""/><property key="labeling/dataDefinedProperty8"value=""/>

                <property key="labeling/dataDefinedProperty9"
value="15"/>
                <property key="labeling/decimals" value="0"/>
                <property key="labeling/dist" value="0"/>

<property key="labeling/distInMapUnits"value="false"/>

                <property key="labeling/enabled" value="true"/>
                <property key="labeling/fieldName" value="number"/>

<property key="labeling/fontFamily" value="MS ShellDlg

2"/>
                <property key="labeling/fontItalic" value="false"/>
                <property key="labeling/fontSize" value="8.25"/>
                <property key="labeling/fontSizeInMapUnits"
value="false"/>

<property key="labeling/fontStrikeout"value="false"/><property key="labeling/fontUnderline"value="false"/>

                <property key="labeling/fontWeight" value="50"/>

<property key="labeling/formatNumbers"value="false"/>

                <property key="labeling/isExpression" value="false"/>
                <property key="labeling/labelPerPart" value="false"/>
                <property key="labeling/mergeLines" value="false"/>
                <property key="labeling/minFeatureSize" value="0"/>
                <property key="labeling/obstacle" value="true"/>
                <property key="labeling/placement" value="1"/>
                <property key="labeling/placementFlags" value="0"/>
                <property key="labeling/plussign" value="true"/>
                <property key="labeling/priority" value="5"/>
                <property key="labeling/scaleMax" value="0"/>
                <property key="labeling/scaleMin" value="0"/>
                <property key="labeling/textColorB" value="0"/>
                <property key="labeling/textColorG" value="0"/>
                <property key="labeling/textColorR" value="0"/>
                <property key="labeling/wrapChar" value=""/>

Using QGIS 1.8.0 on Windows 7

James


James Stott BSc (Hons) MSc | Senior Professional
Nicholas Pearson Associates | 30 Brock Street | Bath | BA1 2LN
T: 01225 445548 | M: -
http://www.npaconsult.co.uk/

-----Original Message-----
From: qgis-user-boun...@lists.osgeo.org
[mailto:qgis-user-boun...@lists.osgeo.org] On Behalf Of James Stott
Sent: 31 May 2012 16:22
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] Query Layer / Rule Based Rendering Problem

I have created a query in the DB Manager SQL Window (data is in a
PostGIS database). The query is then added to the map as a layer.

I copy the style from another layer (rule based style), paste it tomy

query layer and the polygons disappear from the map and QGIS gives a

nextFeature() without select() error. This also happens if I apply aqml

style file to the layer.

If I change the styles back to Single Symbol they do not come back. I
can see the records in the Attribute table, and I can select them and
zoom to them on the map, I just cannot see them.

I have to re-add the query layer using the DB Manager SQL windowagain.


It only seems to be the polygon layers that cause problems at the
moment.

Does anyone know the cause of this?

James

James Stott BSc (Hons) MSc | Senior Professional Nicholas Pearson
Associates | 30 Brock Street | Bath | BA1 2LN
T: 01225 445548 | M: -
http://www.npaconsult.co.uk/



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------------------------------

Message: 4
Date: Fri, 1 Jun 2012 02:46:27 -0700
From: Nathan Woodrow <madman...@gmail.com>
To: James Stott <james.st...@npaconsult.co.uk>,
        "qgis-user@lists.osgeo.org" <qgis-user@lists.osgeo.org>
Cc: "qgis-develo...@lists.osgeo.org" <qgis-develo...@lists.osgeo.org>
Subject: Re: [Qgis-user] Query Layer / Rule Based Rendering Problem
Message-ID: <-1181963382601239453@unknownmsgid>
Content-Type: text/plain; charset=ISO-8859-1

I had this issue the other day when I used the Copy Style function.
Must be a bug. Can you fill a ticket for it.

Nathan

Sent from some fancy phone looking thingo
From: James Stott
Sent: 1/06/2012 7:31 PM
To: qgis-user@lists.osgeo.org
Cc: qgis-develo...@lists.osgeo.org
Subject: Re: [Qgis-user] Query Layer / Rule Based Rendering Problem
To update this post,