concordance where to see

maryandjesse

where can I see concordance after running ucompbine? can I use tools/calculator? what's the expression for 'Final Pb207/U235 age' / 'Final Pb206/U238 age' *100? how to escape non-word characters? is it automatically updated if selection is changed?

Joe

maryandjesse

You could use VizualAge to calculate the discordance via the Tools->VizualAge->Discordance->Calculate menu item. This calculates discordance with the following function:

def calculate_disc():
    t68 = data.timeSeries('Final Pb206/U238 age').data()
    t76 = data.timeSeries('Final Pb207/Pb206 age').data()

    disc = 100 * (1 - (t68/t76))
    data.createTimeSeries("% Discordance", data.Output, None, disc)

You could alternatively calculate concordance and/or discordance using the calculator tool as you suggested keeping in mind non-word characters are translated as '_', so Final Pb207/U235 age would be written Final_Pb207_U235_age.

Or as another option, you could do it in a python workspace script using the above function definition as a starting point and modifying it as you see fit, e.g. to change it to a concordance calculation rather than discordance.

Since these are just normal channels the results associated with selections for these channels will update as selections are changed.

All the best,

maryandjesse

Joe Thank you very much. It works.

maryandjesse

could I have one more question, please? Can I connect my concordance function to some signal, so that when DRS finishes running concordance will be called?

Joe

You have a few options that would sort of allow you to do this:

[1] You could set up a processing template with your DRS action and a python action including any additional calculations you want to add.

[2] You could run the drs and subsequent calculations all via a script, e.g.,

drs = data.dataReductionScheme('U-Pb Geochronology')
settings = drs.settings() # a dict of all the drs settings, could print to see options
settings['ReferenceMaterial'] = 'Name of ref material'
settings['BeamSecondsMethod'] = 'Name of method'
drs.setSettings(settings)
drs.run()

calculateMyStuff()

[3] I've just added a signal that you can connect to in order to run functions after a DRS finishes that'll be in the next release. To use that, you would do something like:

data.drsFinished.connect(calculateMyStuff)

but you would need to run that script once and be aware of making that connection multiple times (i.e. you could end up running your calculations several times).

All the best,

maryandjesse

I like method 2 best. drs.run() is quiet with no prompts, and I can set setting in python code.
Thank you.

Joe

Just remember: using that method you don't get to see the down hole curve fits.