How to search for specific characters within a string.
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Say I have the following files,
foo1.85e-01.mat
foo1.79e+00.mat
foo1.82e+00.mat
foo1.94e+00.mat
foo2.30e+00.mat
How can I select just the files with numbers between 1.8 and 2.0, i.e., the third and fourth files? Together the commands
flist = dir('foo1.8*e+00.mat')
and
flist = dir('foo1.9*e+00.mat')
return all the desired files. But is there a single query that will return the same files?
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dpb
am 18 Sep. 2013
The OS wildcard search isn't flexible enough directly; I'd just return them all and then winnow the list while processing it -- sotoo
d=dir('foo*.mat');
for ix=1:length(d)
fn=d(ix).name;
if ~iswithin(sscanf(fn,'foo%f.mat'), 1.8, 2.0), break, end % skip unwanted
...
end
where iswithin is my handy helper function
function flg=iswithin(x,lo,hi)
% returns T for values within range of input
% SYNTAX:
% [log] = iswithin(x,lo,hi)
% returns T for x between lo and hi values, inclusive
flg= (x>=lo) & (x<=hi);
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