CODEWITHSUNDEEP
matlabhexbinary-data
User1551892
User1551892

Reputation: 3384

How to hold binary data in matlab and perform hex conversion

I want to hold some binary data in a variable in matlab for example

1 1 1 1 0 0 0 1

Later I want to convert it to hex like this

F1

I am unable to identify that how to hold binary data in a variable and is there a function perform that conversion

Upvotes: 2

Views: 1772

Answers (3)

Divakar
Divakar

Reputation: 221774

You can use something like this, assuming a as the input binary row vector -

%// Pad zeros to make number of binary bits in input as multiple of 4
a = [zeros(1,4-mod(numel(a)-1,4)-1) a];

%// Convert to string, then to binary and finally to hex number as a char array
out = dec2hex(bin2dec(num2str(reshape(a,4,[])','%1d')))'

Note that there are no restrictions in it for the number of binary elements in the input vector. So, as a random 1 x 291 sized input binary data, the output was -

out =
02678E51063A7FFBD9CE1DF6A3DC63B17F71C39C17DC499AD58516D7B571FC58DF05957F7

Upvotes: 4

Luis Mendo
Luis Mendo

Reputation: 112779

A possibly faster approoach, which makes use of the fact that exactly four binary digits make up a hex digit:

x = [zeros(1,4-mod(numel(x)-1,4)-1) x]; %// make length a multiple of 4
k = 2.^(3:-1:0); %// used for converting each group of 4 bits into a number
m = '0123456789ABCDEF'; %// map from those numbers to hex digits
result = m(k*reshape(x,4,[])+1); %// convert each 4 bits into a number and apply map

Upvotes: 2

mehmet
mehmet

Reputation: 1631

There are MATLAB built in functions for your case: logical() and binaryVectorToHex(), but, Data Acquisition Toolbox is needed for binaryVectorToHex().

Try this:

>> vec    = randi(2, 1, 100) - 1;      %// Double type vector
>> vecBin = logical(vec);              %// Binary conversion
>> vecHex = binaryVectorToHex(vecBin); %// Hexadecimal conversion

Upvotes: 2

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