ReadList
- To: mathgroup at yoda.physics.unc.edu
- Subject: ReadList
- From: KOLEH at joyl.joensuu.fi
- Date: Thu, 30 Jul 1992 12:35 EET
To the mathgroup
I often read data matrices into Mathematica. For small matrices the next
two ways work well. But if I have a larger matrix tal.dat, the second
method fails. When I compare t3 and t4, they look similar, but t4 is
no longer a matrix. Can anaone tell, what is the problem?
Osmo Kolemainen
Associate professor of statistics
University of Joensuu
Finland
Mathematica 2.0 for MS-DOS 386/7
Copyright 1988-91 Wolfram Research, Inc.
In[1]:= t1=ReadList["t.dat",Table[Number,{21}]];
In[2]:= Dimensions[t1]
Out[2]= {6, 21}
In[3]:= t2=ReadList["t.dat",Number,RecordLists->True];
In[4]:= t1==t2
Out[4]= True
In[5]:= t3=ReadList["tal.dat",Table[Number,{21}]];
In[6]:= Dimensions[t3]
Out[6]= {505, 21}
In[7]:= t4=ReadList["tal.dat",Number,RecordLists->True];
In[8]:= t3==t4
Out[8]= False
In[9]:= Dimensions[t4]
Out[9]= {488}