Correct database - fill missing data

I have a database on the temperature for a day (every hour).

The problem (where I need help) is to fill in the missing values (values which for some reason were not registered). There is no lack many values although sometimes missing six or seven straight ...

I was pointed to the Matlab did interpolation (or something), that is, exchanged missing values by means of the previous records or splines. Any tips?

I know that probably only programming but if there is another way for me would be preferable, I have almost no practice in programming and I have urgency in the results.

Thank you for your attention.

Best Regards.

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/29922-why-your-question-is-not-urgent-or-an-emergency

Answer 1

[Chad Greene]

Does interp1gap do what you need?

Answer 2

[Image Analyst]

I have a spline demo and polyfit demo, attached. You could use either of those.

Answer 3

[Chad Greene]

Or repnan.

[Neil Rodrigo Gómez]

Very valuable information, Thank you