importGradeFile.m

function grade = importGradeFile(filename, startRow, endRow)

% Initialize variables.
delimiter = ',';
if nargin<=2
    startRow = 1;
    endRow = inf;
end

% Format for each line of text:
%   column3: double (%f)
% For more information, see the TEXTSCAN documentation.
formatSpec = '%*s%*s%f%[^\n\r]';

% Open the text file.
fileID = fopen(filename,'r');

% Read columns of data according to the format.
% This call is based on the structure of the file used to generate this
% code. If an error occurs for a different file, try regenerating the code
% from the Import Tool.
dataArray = textscan(fileID, formatSpec, endRow(1)-startRow(1)+1, 'Delimiter', delimiter, 'HeaderLines', startRow(1)-1, 'ReturnOnError', false, 'EndOfLine', '\r\n');
for block=2:length(startRow)
    frewind(fileID);
    dataArrayBlock = textscan(fileID, formatSpec, endRow(block)-startRow(block)+1, 'Delimiter', delimiter, 'HeaderLines', startRow(block)-1, 'ReturnOnError', false, 'EndOfLine', '\r\n');
    dataArray{1} = [dataArray{1};dataArrayBlock{1}];
end

% Close the text file.
fclose(fileID);

% Allocate imported array to column variable names
grade = dataArray{:, 1};