Project - Data Handling and Interpolation

Read Excel file;

• The Xlsread was used but that was not reccomended by matlab also showed up error,
• So used readtable command for reading data from excel as table and saved.
• The read values from excel is saved into seperate varibales by specifying the rows and columns (p(:1)); like this
• the array2table is used to convert it into a array.

Interpolation of data;

• the data that saved into the arrays were first plotted using the plot command to see the curve.
• The polyval & poly fit were used to interpolate the graph.
• the polyval is used to find the value for the new unknowns ,polyfit for finding new equations.
• The spline,cubic linear are interpolated using the interp1;

Write to text file

• File id is opened and the fieinwhich we want to specify is mentioned like .TXT
• The length of array which is to be stored in array is founded using the length() command
• Then for loop is used to save the data into the file.
• then fid is closed.

Graphical solutions

• the plootting of the graphs is done using the following commands
  ployval and polyfit
  animatedline
  interp1
  cubic
  spline
  linear
  the range is made to wide range for the different plots.
• and the 3d graphs are plotted for the power voltage current using the
• Plot3
• surf
• animatedline.