[aspect-devel] How to use Compositional initial conditions/Ascii data model

[Liu]

Hi ,
Thanks for your reply,it's really helpful,I've solved my problem.What's going wrong is that I set the parameter of the number of compositional fields as 2,but there is only data for one compositional field in my ascii file.Here I have another quetion,take your data in  the file box_2d.txt for an example,

----------------------------------------------box_2d.txt-------------------------------------------------
# Test data for ascii data compositional initial conditions.
# Only next line is parsed in format: [nx] [ny] because of keyword "POINTS:"
# POINTS: 3 3
# Columns: x y composition_1
0.                  0.                   0.
330000        0.                   1.
660000        0.                   0.
0.                  330000         1.
330000        330000         1.
660000        330000         1.
0.                  660000         0.
330000        660000         1.
660000        660000         0.
-----------------------------------------------------------------------------------------------------------------------
It is obvious that there is only one compositional field,but if I have 2 compositional fields,and some of the points above belong to composition_1,however,others belong to another,how can I set it in one file ?For example,set the first five points,that is, (0,0),(330000,0),(660000,0),(0,330000) and (330000,330000) in compositional field 1,but the remaining,that is, (660000,330000),(0,660000),(330000,660000),(660000,660000) in compositional field 2.
Could you please explain how to realize it ,and show me in the style above of  box_2d.txt?  Many thanks! 

Best,
Liu
2016/5/18
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