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
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3 Answers
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
13 Comments
User1551892
If I want to do this operation only on a single vector
Divakar
@User1551892 Then use
a use directly, where a would be your single vector.
mehmet
Now, this approach works for even longer vector. I've examined it for 100 of length vector a and gives the same result with
binaryVectorToHex(). For information purposes (only)...Divakar
@mehmet Exactly! I did the same to double-check! Hope mathworks guys don't sue us now ;)
User1551892
Thanks alot for both of you in order to help me. Have a nice time.
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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
4 Comments
User1551892
I do not have data acquisition tool kit. Therefore I can not access method binaryVectorHex method
User1551892
No keep it. Because it can help some one.
Divakar
Looks like an useful function actually!
mehmet
Thanks to both of you. I had forgotten about futher visitor because of same problem.
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
