Split binary number into individual bytes

2019 4 26
1 个回答
回答已采纳
更新时间：2019 4 26
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Hello,
I want to convert a list of binary numbers into 3 different numbers. Each binary number is of 21 bits and I want to convert it into 3 sets of [22:12 11:1 0].
Example is shown below.
00111001110101000101011 => 00111001110 10100010101 1
Below is a sample of the file
00111001110101000101011
00111001110101000101001
00111001110101000100111
00111001110101000100101
00111001101101000100011
00111001101101000100001
00111001101101000011111
00111001101101000011101
00111001101101000011011
00111001101101000011001
I have used the following approach but to no avail as it keeps reading data in double format.
close all
clear all
clc
load D:\Folder\File.txt
dataorig=File;
N=length(dataorig)
finalMat=ones(N,3);
datastr=string(dataorig);
temp=char(datastr(1))
num1=temp(1:11)

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 采纳的回答

Alex Mcaulley
Alex Mcaulley 2019-4-26
编辑：Alex Mcaulley 2019-4-26

0 个投票

This approach save the result in a cell array:
fid = fopen('File.txt');
data = textscan(fid,'%s');
fclose(fid);
dataNew = cellfun(@myfun,data{1,1},'UniformOutput',false);
dataNew = vertcat(dataNew{:});
%To save in a new file
fid = fopen('example.txt','w');
dataNew = dataNew';
fprintf(fid,'%s\t%s\t%s\r\n',dataNew{:});
fclose(fid);
function b = myfun(a)
a = flip(a);
b = {a(1:11),a(12:22),a(end)};
end

4 个评论
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Usman Siddique
Usman Siddique 2019-4-26
I have run the your code bt i cant seem to find any outputs
Can you please explain what have you done in the 4th line of code i.e.
dataNew = cellfun(@myfun,data{1,1},'UniformOutput',false);
Also, shouldn't the function "myfun" be a separate file.
Alex Mcaulley
Alex Mcaulley 2019-4-26
Can you upload your txt file? Are you getting any error? This code works for me just putting your sample in a txt file.
dataNew = cellfun(@myfun,data{1,1},'UniformOutput',false); %This line executes the function myfun for each row of your txt file and save the results in a cell array
The function myfun should be defined at the end of your function/script
Usman Siddique
Usman Siddique 2019-4-26
I have run the code. As you mentioned it saves the result in a cell. The problem is I cant seem to view it as text in the command window. It displays "{1×3 cell}" for every ith row.
Is there any way to store the results in a separate text file?
Alex Mcaulley
Alex Mcaulley 2019-4-26
To see the result in the command window, just use:
dataNew = vertcat(dataNew{:})
To write the result in a new txt file:
fid = fopen('example.txt','w');
dataNew = dataNew';
fprintf(fid,'%s\t%s\t%s\r\n',dataNew{:});
fclose(fid);
I have edited my first answer to show the full code

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