Asked by Willam Willam
on 29 Dec 2012

Hi. I want ask how I need to convert the data that I read from text file and put it in the single the form of 8 bits per each array. Thanks for help. Appreciate.

Answer by Image Analyst
on 29 Dec 2012

Is this what you mean:

array8bit = uint8(doubleArray);

Answer by Walter Roberson
on 30 Dec 2012

Putting your data into different arrays is not advised. Please read http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F

To convert your values, use

bin2dec(A,8)

This will return a character array, one row for each input value, with each character being '0' or '1'. These will *not* be the numbers 0 and 1. If you want the numbers 0 and 1 instead of the characters '0' and '1', then use

bin2dec(A,8) - '0'

The result would be a number of rows, each 8 columns wide, with one row per input number.

If you were hoping that (for example) the input value 5 would convert to the *decimal* number 00000101, then although the conversion to decimal-coded-binary could be done, keep in mind that decimal values automatically drop leading 0's on output, so such an entry would print out as 101 rather than 00000101.

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Willam Willam
on 1 Jan 2013

Ok. I will try it when I'm free. Because prepare for final exam. Thanks ya Sir Walter

Willam Willam
on 9 Jan 2013

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## 4 Comments

## Image Analyst (view profile)

Direct link to this comment:http://www.mathworks.com/matlabcentral/answers/57619#comment_119703

Is the data already read from the file, or do you need code for that too? Have you tried dlmread(), csvread(), importdata(), or textscan()?

## Willam Willam (view profile)

Direct link to this comment:http://www.mathworks.com/matlabcentral/answers/57619#comment_119717

Sir, I used fread() function previously. Is that this function cant used?

## Walter Roberson (view profile)

Direct link to this comment:http://www.mathworks.com/matlabcentral/answers/57619#comment_119721

fread() is for binary files, not for converting text.

## Willam Willam (view profile)

Direct link to this comment:http://www.mathworks.com/matlabcentral/answers/57619#comment_119725

From Image Analyst comment, I had use importdata() function and manage get my data in the form of A=[50 20]. But how I need to convert it into A=[11111111 11111111] and separate it into two arrays like A1=[11111111] A2=[11111111].