HI, now I have dataset: Product Price_LC.1 Price_LC.2 Price_elasticity.1 Price_elasticity.2 Mean_Price Mean_Price_elasticity Trade_Price_Band Country 1 100 357580.1 527483.6 -4.1498383 -2.8459564 473934.0 -3.6935476 0-542811 VN 5 1208 436931.9 536143.9 -3.9432305 -3.4570170 469330.2 -3.6595372 0-542811 VN 6 1280 419666.6 520936.3 -1.7357983 -0.7689443 461367.0 -1.2848528 0-542811 VN 2 101 629371.0 735167.2 -5.2289933 -3.0364372 676059.9 -3.8059064 542812-904779 VN 7 1616 576816.1 663369.6 -4.5528840 -3.9523261 614864.5 -4.3181914 542812-904779 VN 8 1661 583587.9 689853.0 -5.0948101 -4.3427497 650680.0 -4.8109781 542812-904779 VN I want to get the following dataset: Product VN Price_band 100 -3.6935476 0-542811 [357580.1, 527483.6 ] [-2.8459564, 473934.0] 1208 -3.6595372 0-542811 [436931.9, 536143.9] [-3.9432305, -3.4570170] .... how do I get this in r?? Thanks. Kind regards, Lingyi [[alternative HTML version deleted]]