I have some problem with adapting the set label command as per my requirement. I have to insert a label on the top left of the plot. My label contain mathemaical exponent. so I used the following command
set label 1 '$\times10^{-7}$' at graph 0,1.025 I have used epslatex output terminal and the result I have got is not as expected. 
epslatexterminal.