[GPlates-discuss] Time dependent rasters

Christian.Heine at shell.com Christian.Heine at shell.com
Wed Sep 20 18:41:14 AEST 2017


Bruce – to add to Sabin’s reply:

the settings are saved in a GPML file which is stored in the directory where your time-dependent rasters are located. There, the file mapping and raster registration is saved. Usually it simply takes the basename of the first raster file encountered and adds a *.gpml suffix.

The GML:featureMember element stores the setttings – in there, the subelement <gpml:Raster> stores the raster translation (mapping coordinates from raster pixels to lon-lat) and the <gpml:rangeSet> keeps track of assinging the files to ages using <gpml:TimeWindow> elements.

So I guess you could just alter the file, but then it might be the case that GPlates doesn’t create a corresponding cache file (albeit a “reload” of the layer might fix that) – haven’t tested this.

Cheers,
Christian



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From: GPlates-discuss [mailto:gplates-discuss-bounces at mailman.sydney.edu.au] On Behalf Of Sabin Zahirovic
Sent: Wednesday, 20 September 2017 8:12 AM
To: GPlates general discussion mailing list <gplates-discuss at mailman.sydney.edu.au>; GPlates general discussion mailing list (gplates-discuss at mail.usyd.edu.au) <gplates-discuss at mail.usyd.edu.au>
Subject: Re: [GPlates-discuss] Time dependent rasters

Hi Bruce,

The age information for a time dependent raster is stored in the filename – essentially the last integer in the name.

For example:
MIT-P08_Asia_UM30_LM12-0.jpg
MIT-P08_Asia_UM30_LM12-2.jpg
MIT-P08_Asia_UM30_LM12-3.jpg
MIT-P08_Asia_UM30_LM12-5.jpg
MIT-P08_Asia_UM30_LM12-6.jpg
MIT-P08_Asia_UM30_LM12-9.jpg

The age needs to be prefixed with a dash or an underscore, from memory.

Alternatively, if your rasters don’t have ages in the filename, you can load them up anyway as time-dependent rasters, and you will be greeted with a screen to enter the corresponding age values. Let me know if you get stuck…

Cheers,
Sabin


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From: GPlates-discuss <gplates-discuss-bounces at mailman.sydney.edu.au<mailto:gplates-discuss-bounces at mailman.sydney.edu.au>> on behalf of "Eglington, Bruce" <bruce.eglington at usask.ca<mailto:bruce.eglington at usask.ca>>
Reply-To: GPlates general discussion mailing list <gplates-discuss at mailman.sydney.edu.au<mailto:gplates-discuss at mailman.sydney.edu.au>>
Date: Wednesday, 20 September 2017 at 2:17 pm
To: "GPlates general discussion mailing list (gplates-discuss at mail.usyd.edu.au<mailto:gplates-discuss at mail.usyd.edu.au>)" <gplates-discuss at mail.usyd.edu.au<mailto:gplates-discuss at mail.usyd.edu.au>>
Subject: [GPlates-discuss] Time dependent rasters

Good day
  Where are the settings for ages for time dependent rasters stored? I would like to change some age values and manually add another blanks raster to as to cancel the oldest raster I have in a sequence. I can see where to put the raster itself in the gpml file but can’t find where to specify the age at which it is supposed to be visible.

Thanks
   Bruce

Bruce Eglington (Ph.D.)
Murray Pyke Chair
Geological Sciences
University of Saskatchewan
114 Science Place
Saskatoon
SK
S7N 5E2
Canada

bruce.eglington at usask.ca<mailto:bruce.eglington at usask.ca>
+1-306-966-5732

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