[Ifeffit] Larch user base?

[Sean Fackler]

Hi Matt,

I do have wxPython installed and wxmplot. I use anaconda which should handle the obvious dependencies. Is there a list of known dependencies I should double check? 

> If you are using Anaconda python on OS X, there is a weirdness with wxPython that requires using "pythonw" instead of "python" as the interpreter (some Framework thing), but that "just" makes running larch from a command-line or script fail immediately with a message about not being able to draw to the screen.  The "larch_makeicons" makes mini-Apps that avoids this, and the next version will fix this even for the commandline programs.  

I am using Anaconda. I am a newb at Python. What do you mean I use pythonw as the interpreter? I am trying to script with larch and I don’t see any obvious places to replace python with pythonw. I tried installing a new Anaconda environment but didn’t see an obvious point at which to change the interpreter to pythonw. Thanks for any further explanation. I get new_plot to work fine in the larch command line but I want to create new “modules” which I understand needs to be done by scripting larch in a python environment. 

Sean

> On Aug 15, 2016, at 12:59 PM, Matt Newville <newville at cars.uchicago.edu> wrote:
> 
> Hi Sean
> 
> On Mon, Aug 15, 2016 at 12:23 PM, Sean Fackler <swfackler at lbl.gov <mailto:swfackler at lbl.gov>> wrote:
> Thanks Matt for the thorough explanation.
> 
> Actually it was Jamie Sethian who asked. I am working on using Larch as a code basis for doing high-throughput NEXAFS analysis. You can imagine automating just basic normalizing and background subtraction steps would be invaluable in this case. I am working with CAMERA ( Alex Hexamer, Ronald Pandolfi ) on making a GUI and Materials Project ( Patrick Huck ) along with ALS ( Alpha N'Daiye ) to have some sort of database contribution route. Data is coming from ALS beam line 6.3.1. 
> 
> Yes, this is exactly the sort of thing Larch is meant to do!  
>  
> I will be calling on you as I learn Python concurrently with implementing Larch. For example, I got read_ascii to work but couldn't get the plot functions to work and get "newplot not defined." I am using 2.7 on Mac OSX El Capitan. Any ideas?
> 
> Do you have wxPython installed and get the other dependencies (including wxmplot) installed?   FWIW, I run it on a Macbook with El Capitan all the time, and have seen many successful installs with Anaconda.
> 
> If you are using Anaconda python on OS X, there is a weirdness with wxPython that requires using "pythonw" instead of "python" as the interpreter (some Framework thing), but that "just" makes running larch from a command-line or script fail immediately with a message about not being able to draw to the screen.  The "larch_makeicons" makes mini-Apps that avoids this, and the next version will fix this even for the commandline programs.  
> 
> --Matt
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