Parsing data files in Octave

[Jens Benecke]

Hello,

I have a data file (SPICE log) that contains lines like these:

ml_u: l_u=(-101.563dB,0)
ml_o: l_o=(-101.002dB,0)
ml_ges: l_ges=(-103.512dB,0)
ml_rk: l_rk=(-142.705dB,0)
ml_lk: l_lk=(-142.705dB,0)
ml_mk: l_mk=(-107.185dB,0)
mv_w: c_w=(-204.955dB,0)
mr_s: r_s=(1.11031dB,0)
mc4: c4=(-214.573dB,0)
mc_w: c_w=(-204.955dB,0)
mc_m: c_m=(-243.311dB,0)
mc_l: c_l=(-215.746dB,0)
mr_leitung: r_leitung=(7.68303dB,0)
ml_leitung: l_leitung=(-199.576dB,0)

Date: Tue Oct 31 09:43:22 2006
Total elapsed time: 0.547 seconds.


I would like to pipe these through an Octave script to have the dB values
converted to "real" values. (i.e. realval = 10^(dBval/20) )

I tried this script just to parse the values into variables as a first step
and output it:

fid = fopen("2_7_Param_Koppel_1teilig.log", "r");
[matr, count] = fscanf(fid, "%s: %s=(%fdB,0)");
matr
fclose(fid);

but all I get as output is

warning: fopen: default open mode is now binary
error: fscanf: invalid stream number = -1

I also tried using "%s: %s=(%f%s,%i)" as a string to avoid having "dB"
directly behind a variable declaration, to no effect.


Can anybody help me debug this? I'm a bit lost ... =;)


Thanks!


-- 
Jens Benecke
Please do not carbon copy me, I read the lists I post in!