generating 2 bits sequence of binary data

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Ayesha Punjabi
Ayesha Punjabi 2019-2-20
评论： Walter Roberson 2019-2-27
tag_arr = randi(0:1,1,5);
is giving random 0 and 1
tag_arr = randi(0:1,1,5)
tag_arr =
0 0 0 1 1
I am trying to gain 2 bits data
that means tag_arr should be randomly show in the following manner
tag_arr =
00 10 01 10 01 10
i tried several ways of using randi syntax but its not working kindly help
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Ayesha Punjabi
Ayesha Punjabi 2019-2-27
yes but I am trying only to have binary characters.
like I am trying to write syntax that will give me random 1 and 0 but in two or three bit format
like
10 10 10 01 00 11
or 110 001 101 010
Walter Roberson
Walter Roberson 2019-2-27
"binary characters" do not exist in MATLAB. Signed and unsigned integers exist in MATLAB; single precision and double precision floating point value exist in MATLAB; characters exist in MATLAB; logical values (that are mostly treated as being 0 and 1 for numeric purposes) exist in MATLAB. General binary does not exist in MATLAB. The closest MATLAB gets is the fixed-point datatype.

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Walter Roberson
Walter Roberson 2019-2-27
编辑：Walter Roberson 2019-2-27
You cannot do that. MATLAB does not have a "binary" datatype that can display a bit pair without a space between the bits.
Your choices are:
  • use decimal instead of binary. So 00 10 01 10 01 10 would be decimal zero ten one ten one ten and would display as 0 10 1 10 1 10 . The decimal values would have to be broken up again using mod() or similar if you wanted to do computation.
  • use arrays of numbers. So 00 10 01 10 01 10 would be [0 0; 1 0; 0 1; 1 0; 0 1; 1 0] . This would be randi(0:1, 5, 2) . Nothing special would need to be done to use computation.
  • Use character arrays. So 00 10 01 10 01 10 would be ['00'; '10'; '01'; '10'; '01'; '10']. This would be char(randi(0:1, 5, 2)+'0') . The character arrays would have to have '0' (character for digit 0) to be subtracted to do computation.
  • Use character vectors. So 00 10 01 10 01 10 would be '00 10 01 10 01 10' with embedded spaces. This is a bit more of a nuisance to generate. The character vector would have to be transformed in order to do computation.
  • Use decimal values internally and transform them for display. So 00 10 01 10 01 10 would be stored as decimal 0 2 1 2 1 2 and you would use a small function to display them in binary when you wanted to see them.

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