MATLAB: Compact the values in a string

compactregular expressionsstring

Hi! I have a string '641 617 674 674 631 631 631 631 654 629 625 625 673 674': I want to delete duplicate. Ex

'641 617 674 674 631 631 631 631 654 629 625 625 673 674'

will became

'641 617 674 631 654 629 625 673 674'

can you help me?

Best Answer

Here's one way:

s = '641 617 674 674 631 631 631 631 654 629 625 625 673 674';
unique_s = num2str(unique(str2num(s),'stable'))

Related Solutions

MATLAB: Compare strings of different dimensions

s1={'1' '631' '618' '574' '678'} ;
s2={'1' '596' '674' '' '';
     '674' '631' '1' '631' '1';
     '641' '617' '674' '631' '654';
     '674' '673' '674' '673' '674';
     '674' '618' '1' '618' '631';
     '631' '1' '631' '674' '740';
     '739' '740' '733' '674' '631';
     '674' '673' '674' '1' '641';
     '618' '1' '631' '618' '631';
     '674' '631' '618' '631' '618';
     '674' '631' '1' '631' '625';
     '641' '642' '618' '631' '618';
     '618' '631' '1' '631' '1'} ;
[m,n] = size(s2) ;
comp = zeros(size(s2)) ;
 for i = 1:m
     comp(i,:) = strcmp(s1,s2(i,:)) ;
 end

Compare each row of s2 with s1.

MATLAB: Compacting a For Loop

norm_er = 1.301;
exp_er = 9.126;
log_er = 1.301;
ray_er = 2.606;
Errors = [norm_er,exp_er,log_er,ray_er];
% set a tolerance to define equal error
tol = 1e-3;
% find minimum error
min_error = min(Errors);
% find all methods with this error value
idxs = find((Errors-min_error) < tol);
error_str = ["Normal";"Exponential";"Log";"Rayleigh"];
% print based on how many errors are equal (extends to any number of distributions)
% none? that's not good
if length(idxs)==0
    error('something went wrong')
% e.g., Rayleigh distribution is best
elseif length(idxs)=1
    fprintf('%s Distribution is best\n',error_str(idxs))
elseif length(idxs)=length(Errors)
    fprintf('All Distributions are equally good\n')
% e.g., Log and Rayleigh distributions are best    
elseif length(idxs)=2
    fprintf('%s and %s Distributions are best\n',error_str(idxs))
% e.g., Log, Exponential, and Rayleigh distributions are best
else
    tmp = strjoin(error_str(idxs(1:end-1)),", ") + ", and " + error_str(idxs(end);
    fprintf('%s Distributions are best',tmp)
end

Best Answer

Related Solutions

MATLAB: Compare strings of different dimensions

MATLAB: Compacting a For Loop

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