[GPlates-discuss] Colour by feature age: Keeping colour constant during reconstruction

Christian.Heine at shell.com Christian.Heine at shell.com
Tue Jan 10 03:39:21 AEDT 2017


Hi list,

happy 2017 first!

I recently had a query from a colleague and just wanted to check with the list whether my reasoning/workflow is correct:

When reconstructing features in GPlates which are coloured by "FeatureAge" the colouring will always be relative to reconstruction age. I am using my GTS2012 colourscale (https://bitbucket.org/chhei/gmt-cpts) but this equally applies to the default GPlates FeatureAge colouring. This means that a 50 Ma old feature at 40 Ma recon time will be be 'yellowish' (using the GTS2012 cpt) as it is only 10 Myr old, but grow darker as reconstruction time progresses towards present day. 

In order to keep the feature colour constant (e.g. keep a Jurassic chron "blue" over the course of the reconstruction) I have reverted to the following procedure described here:

https://wiki.paleoearthlabs.org/tectonicwaters:gplates_coloring_features_by_absolute_age

where I introduce a new attribute column for the "FROMAGE" but then use the ColorByProperty python script to colour the features for an absolute age (ie keep the colouring constant) using the age value from the new column. 

Is there a simpler way to do this? I guess one could also just point the ColorByProperty script to the "FROMAGE" here, thinking about it...


Cheers,
Christian

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