loads to the Div format a csv file with: field separator=comma ',' and decimal separator = dot '.'
x_div = csv2div2('mycsvdata');
the name of a csv file (a string)
the csv file must respect the following format:
the first line of mycsvdata.csv contains the labels of the columns
the first column of mycsvdata.csv contains the labels of the lines
note: the value in first line and first column is dropped
a Div structure
x_div.d contains the data matrix
x_div.i contains the labels of the observations (lines)
x_div.v contains the labels of the variables (columns)