Fortran reading mixed string and numeric data

Question

I'm having trouble with a read statement. I'd prefer Fortran90, though other versions might be possible if it helps. I have a bunch of lines of data in a file that can be described as:

space-delimited
not in a fixed format
containing a string followed by 7 numbers
string contains a forward slash /

Here's an example:

maxele/OS1_HC_LF_A_0001_004_maxele.63    4.22E-03        9.00E-01        1.00E-06        1       -999    -999    -999
maxele/OS1_Inl_A_0001_005_maxele.63     2.11E-03        9.00E-01        1.00E-06        3       -999    -999    -999
maxele/OS1_HC_LF_C_0001_009_maxele.63  1.56E-03        9.00E-01        1.00E-06        2       58.77   -82.82  28.91
maxele/OS1_TS_B_0001_006_maxele.63   3.90E-03        9.00E-01        1.00E-06        1       -999    -999    -999

I've learned that Fortran will stop a read statement if it encounters a slash (/) character for unformatted reads, so I have to use format specifiers. And because the string length is unknown, I'm not sure how to make sure the string read stops at the first space. I believe it's possible to read in the whole line, then parse afterwards, but this seems convoluted. Is there no way to force it to treat the data as space-delimited? Thanks in advance.

agentp · Accepted Answer · 2013-09-13 21:33:24Z

5

you do need to read the whole line and parse, in this case its not so bad because you only need to parse the first string and can internal list read the rest.

read(unit,'(a)')string !declared long enough for a whole line
iblnk=index(string,' ')
read(string(iblnk:),*)seven_reals

edited Sep 13, 2013 at 21:33

answered Sep 13, 2013 at 17:53

agentp

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