[Qgis-user] Tectonic plate boundaries

[John Moyle]

Thank you one and all with helpful suggestions about finding a shape file
of tectonic plate boundaries.
Having tried several of them, QGIS accepts them and allows me to set colour
type and thickness of line etc but even if they are the only layer selected
I am unable to *see *them.  I must be doing something wrong!
Maybe it's "old dogs and new tricks" at 77 to learn QGIS. The problem is
that this is probably the only time I will ever be using a GIS and all the
courses available want to teach so much general GIS before the little bits
that I need to learn!!  I have my base raster file of the North Atlantic
and have learned enough to make individual layers of cable interruptions,
sub-sea volcanoes and land-slides etc. but have come unstuck at an *imported
*shape file!
Anyway, many thanks one and all.

Dr John Moyle
MB, BS, MSc, PhD, CEng, MInstMC, FRCA, FRHistS
Chartered Engineer
Physician & Anaesthetist (Retired)
Historian (Telegraphy & Medical Technology)

Home +44(0)1608 665968
Cell     +44(0)7836 244584

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out to be wrong but everything to lose if he wagers that God does not exist
and it turns out in the end that He really does." - Blaise Pascal (C17th
French Scientist & Mathematician)


On Sun, 14 Aug 2022 at 22:35, Fielding, Eric J (US 329A) via Qgis-user <
qgis-user at lists.osgeo.org> wrote:

> Hi John,
>
> Here is a GitHub site with plate boundaries in several GIS formats,
> including Shapefile and GeoJSON.
> https://github.com/fraxen/tectonicplates
>
> These should work with QGIS. This is from the Bird (2003) paper that is a
> widely used source of tectonic plate boundaries.
>
> ++Eric
> --
> Eric Fielding
>
> Eric.J.Fielding at jpl.nasa.gov
> http://science.jpl.nasa.gov/people/Fielding/
> Twitter: @EricFielding
> Jet Propulsion Laboratory
> Caltech
> 4800 Oak Grove Drive
> Pasadena, CA   91109
> USA
>
>
>
>
>     Date: Sat, 13 Aug 2022 14:53:54 -0700
>     From: chris hermansen <clhermansen at gmail.com>
>     To: John Moyle <drjmoyle at gmail.com>
>     Cc: qgis-user <qgis-user at lists.osgeo.org>
>     Subject: Re: [Qgis-user] Tectonic plate boundaries
>     Message-ID:
>         <CACc2_69tDWyP6vyShhiSjNdy=
> fUH6AtwA8B5zX1Emux9MbVjRQ at mail.gmail.com>
>     Content-Type: text/plain; charset="utf-8"
>
>     John and list,
>
>     On Sat, Aug 13, 2022, 09:38 John Moyle via Qgis-user <
>     qgis-user at lists.osgeo.org> wrote:
>
>     > Hi
>     > New to QGIS. I want to plot Victorian submarine telegraph cable
>     > interruptions under the Atlantic.  I know, what an Anorak!!
>     > I have found a brilliant rasterfile of the seabed from GEBCO to use
> as a
>     > base layer. I have also collected all the data of cable failure,
> submarine
>     > earthquakes and volcanoes and am ready to make vector layers of all
> the
>     > data.
>     > But what I can't find is a shapefile of the tectonic plates
> boundaries,
>     > just the boundary lines with no shading or text.
>     >
>
>     I believe you have a basic misunderstanding of the nature of data
> within a
>     GIS.
>
>     Generally the way QGIS (and most GIS) works is they "take" only data
> such
>     as points lines and polygons and then the user develops styling on
> those to
>     create the desire cartographic effect.
>
>     It would be most unusual to find shading or text in a shapefile.
>
>     Test in a shapefile is an attribute of some geometric feature. So line
> 377
>     might have an attribute that is "Mid Atlantic Ridge".
>
>     QGIS provides the ability to print the text attributes as labels,
> which can
>     be styled in many useful ways for visualization purposes.
>
>
>     Everything I do find is rejected by QGIS as not being in a suitable
> format.
>     > Help please!
>     > John
>     >
>     > Dr John Moyle
>     > MB, BS, MSc, PhD, CEng, MInstMC, FRCA, FRHistS
>     > Chartered Engineer
>     > Physician & Anaesthetist (Retired)
>     > Historian (Telegraphy & Medical Technology)
>
>
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