readAsciiTable memory problem

Dear all,

I need to read a bunch of ascii files, so I looped over the files and
read the data from each file into one matrix. As it goes on, it
takes more and more time to read one single file. I'm wondering what's
going on here. Is there any temporary variable that is causing the
memory issue? Has anyone met the same problem before? Thanks!

Best,
Yongfei

-- 
Yongfei Zhang
Jackson School of Geosciences
The University of Texas at Austin
Austin, Texas  78712
Email: yfzhang.nju@gmail.com
         yongfei@utexas.edu
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