Double vs single

Hey guys,

I have two matrices: < 57x600x27 double > and < 57x600x14 single >.

1- I got these matrices exactly from identical dataset. What is the reason that one is double and another is single?

2- How can I change the Single to Double? (because I cannot filter it (Chebyshev filter) when it is single and an error message appreas like "_Input arguments must be 'double'").

Thanks for your help!

Answer 1

[Matt Fig]

1- That would depend on how your dataset was generated. We really have no way of knowing that.

2- Use the DOUBLE function. For example, create a matrix of ones of type single, then convert it to a matrix of ones of type double:

double(ones(3,'single'))

[Salaheddin Hosseinzadeh]

What's the difference between double and single?! I don't understand its principle!! :(

[per isakson]

See

• Floating-Point Numbers
• Numeric Types, Integer and floating-point data

[Salaheddin Hosseinzadeh]

@ Per isakson

Thanks so much! ;)