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Using Read List to read FORTRAN output
*To*: mathgroup at yoda.physics.unc.edu
*Subject*: Using Read List to read FORTRAN output
*From*: Cetin Cetinkaya <cetin at acm0.me.uiuc.edu>
*Date*: Tue, 11 Jan 1994 00:32:08 -0600
Tue Jan 11 00:29:29 CST 1994
Dear Netters;
I have a quick question. I have an input file which looks like as
follows:
Elem. No. S22
--------- -------------------------------------------------------
1 Int. pt. 1 : -1.9419E+04 Int. pt. 2 : -3963.7
Int. pt. 3 : -1.1481E+04 Int. pt. 4 : 3973.9
3 Int. pt. 1 : 882.7 Int. pt. 2 : 3285.4
Int. pt. 3 : 5379.9 Int. pt. 4 : 7782.6
I am interested in reading this data file (test3.m) into MMA in a list form.
For this file, what I want is something like this:
{1, -1.9419E+04, -3963.7 , -1.1481E+04 , 3973.9 ,
2, 882.7 , 3285.4 , 5379.9 , 7782.6 }
that is to say, I want Elem. No. and corresponding four Int. pt. values.
To do this, I have studied the section 2.10. Reading Data of the Manual.
In In[79] below, I have shown the function which I developed
for this purpose. Unfortunately, it does not give what it is suppposed
to produce: Elem. No.'s are missing.
In[79]:=ReadList["test3.m",Record ,
RecordSeparators->{{"/n ","1 :","2 :","3 :","4 :"},
{"Int. pt. 1 :","Int","Int","Int","\n"}}
]
Out[79]= { -1.9419E+04 , -3963.7 , -1.1481E+04 ,
> 3973.9 , 882.7 , 3285.4 }
The manual suggests (In13] in p.497) that InputForm of a ReadList command is
helpful. The following is the InputForm - how MMA sees it internally:
In[80]:= InputForm[ ReadList["test3.m",Record ,RecordSeparators->{}]]
0.0166667 Second 669.724 KByte
Out[80]//InputForm=
{" Elem. No. S22 \
\n --------- \
------------------------------------------------------- \n \
1 Int. pt. 1 : -1.9419E+04 Int. pt. 2 : -3963.7 \
\n Int. pt. 3 : -1.1481E+04 Int. pt. 4 : 3973.9 \
\n 3 Int. pt. 1 : 882.7 Int. pt. 2 : 3285.4\
\n"}
>From Out[80], it is clear that Elem. No.'s 1 and 3 are between "\n" and "Int. pt. 1 :".
But it is not given in the output line Out[79] above even though the right separator
is used in the function.
Now I would like to ask the following questions:
1- How come MMA do not recognize this separator?
2- What can I improve my function for the desired task?
3- Is there a better way to do what I am trying to do? Something similar to
FORTRAN formats?
Thanks in advance,
CETIN CETINKAYA
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