MATLAB: Convert string of hex to array of dec

hexparse string

I need to convert a string of hexidecimal numbers to an array of dec numbers. The string can potentially contain incomplete hex numbers at the beginning and end of the string. See examples below. I'm trying to use this in a data acquisition setup…so execution time could be a factor.

Input String Examples ('/r' = carriage returns:

s1 = '0001h/r0002h/r0003h/r';
s2 = '4h/r0001h/r0002h/r0003h/r00';

Output Desired:

a1 = [1,2,3]
a2 = [1,2,3]

Best Answer

s1 = '0001h/r0002h/r0003h/r';
s1 = '4h/r0001h/r0002h/r0003h/r00';
str=regexp(s1,'h/r','split');
Ind=cellfun(@length,str);
str=str(Ind==4);
num=hex2dec(str);

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Try this:

String = {'Abc\a1\L\XYZ1R08'
'Abc\a1\R\XYZ1R09'	
'Abc\a1\R\XYZ1R10'	
'Abc\b2\L\XYZ2L01'	
'Abc\b2\R\XYZ2L02'	
'Abc\b2\R\XYZ2L03'	
'Abc\c3\L\XYZ2L04'	
'Abc\c3\R\XYZ2L05'	
'Abc\d4\L\XYZ2L06'	
'Abc\d4\R\XYZ2L07'};
grpstr = regexp(String, '(?<=\\)\w{2}', 'once','match');    % Get Two Letters After First ‘\’
Group = findgroups(grpstr);
Result = {String, Group}                                    % Cell Array
T1 = table(string(String), Group)                           % Table

producing:

T1 =
  10×2 table
           Var1           Group
    __________________    _____
    "Abc\a1\L\XYZ1R08"      1  
    "Abc\a1\R\XYZ1R09"      1  
    "Abc\a1\R\XYZ1R10"      1  
    "Abc\b2\L\XYZ2L01"      2  
    "Abc\b2\R\XYZ2L02"      2  
    "Abc\b2\R\XYZ2L03"      2  
    "Abc\c3\L\XYZ2L04"      3  
    "Abc\c3\R\XYZ2L05"      3  
    "Abc\d4\L\XYZ2L06"      4  
    "Abc\d4\R\XYZ2L07"      4

MATLAB: Extract integers from random strings

sscanf(a, '%*[^.].%d')

Best Answer

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MATLAB: Give labels according to string

MATLAB: Extract integers from random strings

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