[Scilab-users] Advice needed on file parsing

[paul.carrico at free.fr]

Hi 

I cannot say if the following is the best way to proceed, but when the
number of columns differs, I always have a look to such functions in
order to get the data: mopen/mgetl/grep/strindex and so on ... it need a
bit of work. 

The previous method work when the file size is not huge because mgetl
loads in memory all the file first - in case of huge files (I mean with
millions of lines), I need to adopt another strategy (bash file using
awk - grep - seb and so on tool) in order to have a text/matrix file in
a right format ... nevertheless I do not get strings so the previous
method may not work. 

Just a feedback 

Paul 

Le 2017-06-18 23:10, Richard llom a écrit : 

> Hello fellow scilab-users,
> I'm writing a script to read and process files, which are constructed as
> follows:
> <file start>
> PCB: 007
> ASM: 000
> LOT: 00000
> FW:  1477971088
> CH1:  AMPS   10A
> CH2:  VOLT   60V
> SMPL: 0064 0125Hz
> DESC: 12V CU LOG
> UTC TIME SEC  ,CH1 AMPS DC  ,CH2 VOLT DC  
> 1497812372.910, 8.609146E-03, 1.210613E001
> 1497812373.895, 1.577809E-01, 1.207540E001
> 1497812374.578, 1.010268E000, 1.193087E001
> ... [snip]
> <file end>
> 
> To process this file further, I need:
> 1)
> the first eight lines stored in pairs, e.g. 
> info(1,1) should yield "PCB" and info(1,2) should yield "007" (string is ok)
> 
> 2)
> line #9 (header), should be available as header(1)="UTC TIME SEC", etc...
> 
> 3)
> line 10+
> these should be scanned in as a matrix.
> 
> I already tried csvread and msscanf (?), however with no luck so far...
> 
> So if someone could just point me to the apropiates function for each task.
> I hopefully can take it then from there.
> Thanks & cheers
> richard
> 
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