isnan

Check for Not a Number entries.

📝 Syntax

• tf = isnan(M)

📥 Input argument

• M - a variable

📤 Output argument

• tf - logical: result of 'isnan'.

📄 Description

isnan returns a logical array which is true where elements of M are "Not a Number" values.

💡 Example

isnan(pi)
isnan(NaN)
isnan(int32(3))
X = sparse([1 2 NaN 3 0 NaN 0 4]);
R = isnan(X)

🔗 See also

isinf.

🕔 History

Version	📄 Description
1.0.0	initial version