utils/matlab/grepread.m

function [vals] = grepread(file,varargin)
% VALS = GREPREAD(FILE,EXPR1,...);
%
% Extracts the expressions "expr1","expr2",... from the file "file".
% This assumes output in the standard form defined by the MITgcm
% monitor package and is not a replacement for TEXTREAD.
% 
% e.g.
% >> vals=grepread('output.txt','time_secondsf','ke_mean','ke_max');
% >> plot(vals(:,1)/86400,vals(:,2:3));

if nargin<2
 error('You must supply a filename and at least one search expression!')
end

tfile=sprintf('/tmp/grepexpr%15.15f',rand);
for k=1:nargin-1;
 try
  eval(['!grep ' varargin{k} ' ' file ' | sed s/.\*=// >! ' tfile])
  vals(:,k)=textread(tfile,'%f');
  delete(tfile)
 catch
  delete(tfile)
  error(sprintf('An error occured while scanning for: %s',varargin{k}));
 end
end
1	adcroft	1.1	function [vals] = grepread(file,varargin)
2			% VALS = GREPREAD(FILE,EXPR1,...);
3			%
4			% Extracts the expressions "expr1","expr2",... from the file "file".
5			% This assumes output in the standard form defined by the MITgcm
6			% monitor package and is not a replacement for TEXTREAD.
7			%
8			% e.g.
9			% >> vals=grepread('output.txt','time_secondsf','ke_mean','ke_max');
10			% >> plot(vals(:,1)/86400,vals(:,2:3));
11
12			if nargin<2
13			error('You must supply a filename and at least one search expression!')
14			end
15
16			tfile=sprintf('/tmp/grepexpr%15.15f',rand);
17			for k=1:nargin-1;
18			try
19			eval(['!grep ' varargin{k} ' ' file ' \| sed s/.\*=// >! ' tfile])
20			vals(:,k)=textread(tfile,'%f');
21			delete(tfile)
22			catch
23			delete(tfile)
24			error(sprintf('An error occured while scanning for: %s',varargin{k}));
25			end
26			end