/*
** Lesson 2.3: Data Transformation
*/
output file = gpe\output2.3 reset;
load data[17,7] = gpe\longley.txt;
data = data[2:17,.];           

PGNP = ln(data[.,2]);
GNP = ln(data[.,3]/1000);               
POPU = ln(data[.,6]/1000);
EM = ln(data[.,7]/1000);

X = PGNP~GNP~POPU~EM; 
print X;
end;