How do i convert data to 2 bit hexadecimal using num2hex?

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Tousif Ahmed 2017-7-31

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/350941-how-do-i-convert-data-to-2-bit-hexadecimal-using-num2hex

评论： Stephen23 2017-8-3

I am using num2hex where i am getting 8 bit as the output, i need to convert it to 2 bit. is there any way for that using num2hex? example :ffc00000, this is the output of 8 bit, how do i convert it to 2 bit?

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Jan 2017-8-1

@Tousif Ahmed: Are you sure that the conversion from floating point zo 8 bit is useful? Why don't you use the floating point values directly? E.g. integer values from 0 to 255 or even a scalar UINT8 might be easier.

Stephen23 2017-8-3

See also this almost identical question:

https://www.mathworks.com/matlabcentral/answers/349396-how-do-i-convert-decimal-to-hexadecimal-for-floating-points

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回答（1 个）

Walter Roberson 2017-7-31

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/350941-how-do-i-convert-data-to-2-bit-hexadecimal-using-num2hex#answer_276223

在 MATLAB Online 中打开

LUT{'0'} = {'00' '00'};
LUT{'1'} = {'00', '01'};
LUT{'2'} = {'00', '10'};
LUT{'3'} = {'00', '11'};
LUT{'4'} = {'01', '00'};
LUT{'5'} = {'01', '01'};
LUT{'6'} = {'01', '10'};
LUT{'7'} = {'01', '11'};
LUT{'8'} = {'10' '00'};
LUT{'9'} = {'10', '01'};
LUT{'A'} = {'10', '10'};
LUT{'B'} = {'10', '11'};
LUT{'C'} = {'11', '00'};
LUT{'D'} = {'11', '01'};
LUT{'E'} = {'11', '10'};
LUT{'F'} = {'11', '11'};
LUT{'a'} = {'10', '10'};
LUT{'b'} = {'10', '11'};
LUT{'c'} = {'11', '00'};
LUT{'d'} = {'11', '01'};
LUT{'e'} = {'11', '10'};
LUT{'f'} = {'11', '11'};
hex = num2hex(single(ScalarValue));
output = [LUT{hex}];

The output would be, for example,

{'11' '11' '11' '11' '11' '00' '00' '00' '00' '00' '00' '00' '00' '00' '00' '00'}

You were not clear on what value you wanted for each output. If you want numeric values such as 0, 1, 2, 3 then you can code those instead of the '10' or whatever.