How number character array to single number conversion can be performed?

Sir,

>> Z_data=data(1,52:63)

Z_data =

-008.5710001

It's my data to be converted to single number. I performed following tasks:

>> Z_data_str = mat2str(Z_data)

Z_data_str =

'-008.5710001'

Here I converted the number character array to a string

>> Z_data_num = str2num(Z_data_str)

Z_data_num =

     []

Here I tried to convert the that the string to number, but I get a [] symbol. why did it so?

>> Z_data_num = str2double(Z_data_str)

Z_data_num =

   NaN

And when I tried to convert it to double type the answer was NaN. Please explain the reasons to both the results. And suggest a solution.

Thanks

Answer 1

[Azzi Abdelmalek]

Z_data ='-008.5710001' 
%Z_data is already a char type
Z_data_num=str2num(Z_data)

In your case by adding

Z_data_str=mat2str(Z_data)

you created a new string containing quotes ' ', you can check the sizes of

size(Z_data)
size(Z_data_str)

[JOSHY T R]

Thanks Sir for pointing me my mistake.