Replacement of Nan to 2.74

One of the elements in the usage variable has a value of NaN. Replace this value with the value 2.74.

How can i write this ??

[Sohail Ahmad]

Visit this site and go to part 5

https://github.com/swamybabun/MATLAB

Indexing into and Modifying Arrays Use indexing to extract and modify rows, columns, and elements of MATLAB arrays.

• Indexing into Arrays
• Extracting Multiple Elements
• Changing Values in Arrays

[Sohail Ahmad]

array-name (Row,Column)=2.74

[Rasim Tawfeeq]

usage (2,3)=2.74

Answer 1

[Star Strider]

Use the isnan function to detect it and its location. Since this seems to be a homework problem, I leave the rest to you. (If it is not a homework probllem, I will provide a more detailed Answer.)

[ali tefeili]

Thankyou,what if i know in which row und column it is ?

[Star Strider]

My pleasure.

Use the find function. See the documentation to understand how to get both the row and column indices.

Answer 2

[Steven Lord]

You could use the fillmissing function to fill the location of your missing data (NaN for double and single precision variables) with a constant. It will also allow you to specify different methods to fill that missing data (several types of interpolation, values that are "around" the missing data, or moving average or median.)