And if you are thinking of manually tracing over a raster image you just
need the tools on the "digitisation" and "advanced digitisation"
toolbars. There is help on these in the user manual.
> Date: Wed, 2 Nov 2011 16:52:49 -0700
> From: Mars
> Subject: Re: [Qgis-user] How to Degitize a raster i
Besides Geo-Referencing a Raster image, there is also a function called
"Feature Extraction". I Believe there is a plugin for extracting Vector
Features from a DEM and possibly other functions to extract features from other
types of Rasters. Perhaps if Geo-referencing is not your primary goal yo
Hi Mumtaz!
I am not quite sure what you mean with "Digitization of raster layer"
but I assume you mean something like georeferencing any raster image you
have ..
So a very good starting point for that would be:
http://glaikit.org/2011/03/27/image-georeferencing-with-qgis/
or
http://people.umass.ed
Dear QGIS Repr.
Would u please guide me the process of Digitizationof raster layer under QGIS
1.7.1- wroclaw
thanks
(Mumtaz)
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so did you understand why?
lat lon is not an equidistant coordinate system. It is an angular measure.
The graticules merge closer togehter the further north they go.
When you overlay data projected to ll onto a flat surface the lengths east
west at the top are shorter than the lengths east west at
Hi,
I'm new to this list, and I've just recently started using QuantumGis by
suggestion from PostGis community. I've been using QGis for an assignment
at university on an undergrad so I only know the very basics since we are
learning it on our own for a pres.
I have a postgres 9.1, a postgis 1.5.
If I use the arrow keys to pan north and south the scale changes. If I
use them to pan left and right it doesn't change.
From: kidsmake6until2...@gmail.com [mailto:kidsmake6until2...@gmail.com]
On Behalf Of Brad Nesom
Sent: 02 November 2011 15:00
To: James Stott
Cc: Saber Razmjooei; qgis-user@li
I am thinking rather than that it is just the fact that when you use
degrees, moving in the map would give you a different scale.
Because every time you move north or south you have changed the length of
the x distance.
If you pan left and right (very carefully) do you see the scale not change?
Could this just be a windows thing then? I tried an older version of qgis-dev
(1.8.0-78) on a different windows machine in the office and there are no
problems. Metres should be the default setting for 27700 shouldn't it not
degrees?
James Stott BSc (Hons) MSc | Senior Professional
Nicholas Pe
I don't think this is available already in QGIS but the Dockable
MirrorMap plugin can be an inspiration to develop such a feature.
On Wed, Nov 2, 2011 at 4:16 PM, wrote:
> Yep, ArcGIS does the same thing under the same name too, so it's not an
> uncommon feature.
> Unfortunately I do need it to
James
I am using QGIS-Trunk under ubuntu 10.04. The canvas projection is set
to 27700 and Layer unit to metre.
The scale seems to be fine and not affected by panning.
Cheers
Saber
On Wed, 2011-11-02 at 10:43 +, James Stott wrote:
> An update:
>
>
>
> This is also happening on a colleagu
Yep, ArcGIS does the same thing under the same name too, so it's not an
uncommon feature.
Unfortunately I do need it to be a QGIS extension because we have a
pre-deployed QGIS project that is interested in it. However, it's an
"icing on the cake" feature, so not mandatory.
Thanks though,
Jonatha
Il 02/11/2011 04:50, mharrop1980 ha scritto:
> We are just looking at QGIS as a way of capturing new pipeline data for our
> water network data. I'm wondering if its possible in QGIS to set certain
> topology rules.
I think this is a good candidate for a plugin.
Most probably its development will
writes:
>
> Ah, these are multi-band images I'm using. The
> problem with QGIS relying on plugins is that you're also relying on the
> documentation for those plugins, and this one doesn't seem to have much
> for instance.Swipe basically allows you to "swipe"
> a raster layer off so you can com
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