Extracting data from external file

Not sure how to even start this, I got the data onto matlab via import the 3 columns I labeled X Y Z

[Walter Roberson]

The monthly means for January are the ones where Y==1. You can index Z by that logical vector.

Answer 1

[Ajay Pattassery]

The NorfolkMonMeanTemp.dat seems a matrix with 3 columns.

The questions like extracting the monthly mean for a particular month are matrix indexing.

You can refer the following documentation as a start to understand about retrieving elements from a matrix.

Similarly, refer plot for plotting the mentioned variables.

If you are new to Matlab I strongly suggest doing the MATLAB Onramp course which will help in answering

most of the questions in the attached image.