[GPlates-discuss] Rotating multiple sites

Marcus Badger Marcus.Badger at bristol.ac.uk
Sat Jan 30 02:42:05 AEDT 2016


Thanks Christian,

That works very nicely, the only trouble I had initially was importing 
the data into GPlates, but once I found that dragging a .gmt tab 
delimited lon-lat file into the main window did the trick it all works 
perfectly.

many thanks!
best wishes
Marcus.



On 29/01/2016 13:20, Christian.Heine at shell.com wrote:
> Marcus,
>
> cookie cutter to the rescue:
>
> 1) Generate a GMT xy file (or any sort of GPlates-readable feature collection) with your site locations
>
> 2) Import it into GPlates. It'll nag you about assigning metadata (name, PlateIDs etc) to the attribute columns in your file which you can skip for now.
>
> 3) Load the plate model of your choice into GPlates, especially a set of (static) polygons. The sample dataset is probably a good start.
>
> 4) In the Menu -> Features -> Assign Plate IDs
>
> 5) In the wizard, specify the partitioning layer (the static polygons), the features to be partitioned (your sample sites). Then decide on the way things should be partitioned (if you have points I recommend "copy ... from polygon that most overlaps each geometry in a feature"). If you want to also assign ages, check the "Time of " checkbox.
>
> 6) Click "Apply"
>
> 7) You data should now have been assigned plate ids and you should be able to rotate them around.
>
> 8) Export the rotated point data set through Reconstructions -> Export -> Single Snapshot (if you only require a single recon time) -> Add export -> Reconstructed geometries -> GMT as output file format.
>
> GPlates works with GMT files all fine, but make sure that valuable metadata/attributes of your point locations are preserved. The "extended" GMT format with attributes in the comment line should work if I recall correctly.
>
> HTH,
> Christian
>
>
>> -----Original Message-----
>> From: gplates-discuss-bounces at mailman.sydney.edu.au [mailto:gplates-
>> discuss-bounces at mailman.sydney.edu.au] On Behalf Of Marcus Badger
>> Sent: Friday, 29 January 2016 2:06 PM
>> To: gplates-discuss at mailman.sydney.edu.au
>> Subject: [GPlates-discuss] Rotating multiple sites
>>
>> Hiya,
>>
>> I have a database of site localities which I'd like to use GPlates to
>> rotate to palaeolocations. I see I can create a feature by digitising a
>> single point geometry, assign that to a plate and then rotate it
>> successfully, and then get the palaeolocation coordinates from the Query
>> feature dialogue.
>>
>> However, as I have quite a lot of sites to rotate, is there a way to
>> batch import the modern day lat-lons, perform the rotations and export
>> the paleolocations? (ideally to a format which plays well with GMT).
>> Looking through the Docs and mailing-list archive I don't see a way to do
>> it...
>>
>> Any help greatly appreciated!
>>
>> best wishes
>> Marcus.
>>
>> --
>> ----------------------------------------------------------------------
>> Dr Marcus Badger
>> Research Associate
>>
>> Organic Geochemistry Unit and BRIDGE (Bristol Research Initiative for the
>> Dynamic Global Environment)
>>
>> School of Chemistry
>> University of Bristol
>> Cantock's Close
>> BRISTOL BS8 1TS
>> UK
>>
>> Office: W417
>> Tel: +44 (0) 117 33 16795
>> Mobile: +44 (0) 774 07 96811
>> Email: marcus.badger at bristol.ac.uk
>
> --
>    Christian Heine, Ph.D.
>    Upstream - Opportunity Identification (UPX/N/OH)
>    Shell Intl. Exploration and Production B.V.
>    Carel van Bylandtlaan 5
>    2596 HP Den Haag, The Netherlands
>
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>
>
>
>
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-- 
----------------------------------------------------------------------
Dr Marcus Badger
Research Associate

Organic Geochemistry Unit and BRIDGE (Bristol Research Initiative for 
the Dynamic Global Environment)

School of Chemistry
University of Bristol
Cantock's Close
BRISTOL BS8 1TS
UK

Office: W417
Tel: +44 (0) 117 33 16795
Mobile: +44 (0) 774 07 96811
Email: marcus.badger at bristol.ac.uk
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