How to convert char to number?

I have a data set that I am trying to format as follows:

month = data (:, 2);  % (2276x1)
month =sprintf('%02d\n',month)

The problem is this gives me:

   Name       Size              Bytes  Class    

   month      1x6828            13656  char

I need it to be a single column of NUMBER data (2276x1) in the format I specified. I tried using str2num but this makes my data lose the formatting I want.

Please help and thank you!

[Azzi Abdelmalek]

Can you post a sample of your data?

[Sandy]

The original input is a 2276x1 double that looks like:

      9
      10
      10
       2

[Sandy]

I basically want it to remain a 'double type' except padded with zeros in the front.

[Azzi Abdelmalek]

When you write:

a=05

This number will be displayed as 5. The only way to display it with padded 0 is to use a string.

sprintf('%02d',5)

[Image Analyst]

Don't use month as a variable name because it's a built-in function. What does data represent, and especially column 2 of data? Why is month 2276 characters long? The month names I know of are less than 10 characters, like September.

Answer 1

[Azzi Abdelmalek]

B=sprintf('%02d\n',A)

sprintf is used to display your data A in a format of your choice, your data are converted to string B. Your data are still in your original array A. Why do you want to convert B ?

For example, if you have a number 5, if you want to display it as 05 you need to convert it to a string '05'.

[Sandy]

I want to save the new formatted data (B) as a double. Right now it is in char format.

[Azzi Abdelmalek]

There is a difference between the content of an array, and how you want to display it. The number 5 is 5, and can't be otherwise, but you can decide to display it as 05 or 005 or whatever you want

[Sandy]

Is there a way to save what is shown in the display? For example, if my numbers are 5, 6, 7, I'd like to export a text file with 05, 06, 07.

[Azzi Abdelmalek]

If you want to save your data as double, just save your original array. nobody will see it!