$1.$ Import data into a numerical matrix called raw$\_$data from the project's data file with the

function readmatrix$().$

Extract all the electrical output datapoints $($GWh$)$ and store it to a $323$ matrix. Make sure that

each energy source is contained in a column. Also create a $13$ cell array that stores the energy

source names from the datafile $($consider the readcell$()$ function$).$

Extract the dates as a $321$ column vector $($exclude the provisional year$).$

Extract the provisional year $($incomplete last year of $2022)$ datapoints.

Append the year $2022$ as the last element of the dates vector.

Create a copy of the data variable and scale the fossil fuel data down by a factor of $10.$ Also

create the cell array that is needed for the legend shown below:

Fossil Energy $10$

Nuclear Energy

Renewable Energy