如何仅对数据框中的分类数据进行编码
Income Length of Residence Median House Value Number of Vehicles Percentage Asian Percentage Black Percentage English Speaking Percentage Hispanic Percentage White MakeDescr SeriesDescr Msrp1 90000 15.0 F 4 1 1 71 6 81 HYUNDAI Sonata-4 Cyl. 19395.02 125000 7.0 H 1 11 1 91 1 81 JEEP Grand Cherokee-V6 29135.03 90000 8.0 F 1 1 1 71 6 86 JEEP Liberty 20700.04 125000 8.0 F 3 1 1 86 6 86 VOLKSWAGEN Passat-V6 28750.05 90000 8.0 F 1 1 1 71 6 81 JEEP Wrangler 20210.06 110000 7.0 G 5 6 6 71 6 76 HYUNDAI Santa Fe-V6 25645.07 110000 7.0 G 3 11 6 71 6 71 HYUNDAI Sonata-4 Cyl. 15999.08 125000 8.0 G 1 1 11 81 6 76 HYUNDAI Santa Fe-V6 23645.09 125000 9.0 G 1 6 1 91 1 86 CHEVROLET TRUCK Trailblazer EXT 32040.010 110000 8.0 E 2 6 46 81 16 26 JEEP Wrangler-V6 18660.011 125000 11.0 G 3 6 1 76 1 86 CHEVROLET TRUCK Silverado 2500 HD 31775.012 125000 12.0 G 2 11 6 66 1 71 CHEVROLET Cobalt 13675.013 125000 13.0 G 2 1 16 95 6 71 HYUNDAI Veracruz-V6 28600.015 110000 11.0 F 5 6 41 61 11 41 HYUNDAI Santa Fe 22499.016 125000 9.0 F 2 1 6 91 1 81 HYUNDAI Santa Fe 22499.017 125000 8.0 G 2 11 11 66 1 66 MITSUBISHI Endeavor-V6 32602.018 110000 12.0 E 1 6 46 81 16 26 HYUNDAI Accent-4 Cyl. 10899.019 90000 9.0 F 4 1 6 71 6 81 JEEP Grand Cherokee-6 Cyl. 29080.021 125000 8.0 G 1 6 1 76 1 86 MITSUBISHI Endeavor-V6 29302.022 110000 12.0 F 2 6 26 66 11 51 HYUNDAI Santa Fe 22499.023 90000 9.0 F 1 6 6 66 6 76 HYUNDAI Santa Fe-V6 20995.024 125000 9.0 H 1 6 1 91 1 81 HYUNDAI Sonata-V6 18799.025 90000 14.0 F 2 1 6 71 11 81 HYUNDAI Elantra-4 Cyl. 13299.026 125000 9.0 G 3 1 11 81 6 76 JEEP Grand Cherokee-6 Cyl. 29080.027 125000 8.0 H 5 6 1 91 1 81 CHEVROLET TRUCK Trailblazer 29395.028 110000 12.0 E 4 6 41 61 11 36 HYUNDAI Sonata-4 Cyl. 15999.029 110000 10.0 E 1 6 41 61 11 36 HYUNDAI Santa Fe-V6 20995.030 125000 10.0 F 2 6 1 71 6 86 CHEVROLET TRUCK Tahoe 37000.032 90000 10.0 F 1 1 1 71 6 86 MITSUBISHI Galant-V6 19997.033 125000 12.0 F 1 1 1 86 6 86 CHEVROLET TRUCK Trailblazer 28175.0... ... ... ... ... ... ... ... ... ... ... ... ...4451 110000 9.0 F 3 6 41 61 11 36 NISSAN Sentra-4 Cyl. 17990.04452 125000 11.0 G 2 1 11 81 6 76 CHEVROLET TRUCK Tahoe 39515.04453 125000 8.0 H 1 6 1 91 1 81 HYUNDAI Elantra-4 Cyl. 15195.04454 110000 10.0 F 3 6 41 61 11 41 HYUNDAI Genesis-4 Cyl. 26750.04455 125000 7.0 H 4 11 1 76 1 76 HYUNDAI Sonata-4 Cyl. 19695.04456 125000 9.0 G 5 6 1 76 1 86 NISSAN Altima 22500.04457 110000 11.0 E 1 6 46 81 16 26 GMC LIGHT DUTY Denali 51935.04458 125000 6.0 H 1 11 1 76 1 76 JEEP Liberty-V6 24865.04459 125000 12.0 G 3 1 16 95 6 71 HONDA Accord-V6 26700.04460 125000 7.0 F 1 1 1 86 6 86 HYUNDAI Veloster-4 Cyl. 17300.04461 90000 10.0 F 2 6 11 66 6 71 CADILLAC SRX-V6 42210.04463 110000 8.0 F 3 6 26 61 11 56 GMC LIGHT DUTY Acadia 42390.04468 125000 8.0 G 1 1 1 91 1 86 HONDA Pilot-V6 40820.04469 125000 10.0 H 5 11 1 91 1 81 TOYOTA Highlander-V6 30695.04470 110000 12.0 F 1 6 41 61 11 41 HYUNDAI Elantra-4 Cyl. 15195.04473 110000 13.0 F 1 6 21 66 6 61 ACURA TSX 32910.04476 125000 9.0 G 1 6 1 76 1 86 BMW X3 36750.04482 125000 10.0 H 1 6 1 91 1 81 SUBARU Forester-4 Cyl. 21195.04486 125000 11.0 H 2 6 1 91 1 81 GMC LIGHT DUTY Yukon XL 44315.04492 125000 10.0 H 2 6 1 91 1 81 BMW 5 Series 53400.04493 110000 12.0 G 2 6 6 71 6 76 ACURA TL 33725.04494 125000 12.0 F 3 1 1 86 6 86 ACURA TL 33725.04495 125000 12.0 F 3 1 1 86 6 86 ACURA TL 33725.04496 125000 7.0 G 5 1 11 81 6 76 ACURA TL 33325.04497 125000 9.0 G 1 6 1 76 1 86 ACURA TL 33725.04498 125000 12.0 G 3 1 11 81 6 76 ACURA TL 33725.04499 110000 14.0 G 8 11 6 71 6 71 ACURA TL 33725.04501 125000 9.0 G 3 11 6 66 1 71 FORD Taurus-V6 20050.04502 110000 2.0 G 4 11 6 71 6 71 DODGE Stratus-4 Cyl. 15910.04503 125000 8.0 F 1 1 1 86 6 86 DODGE Stratus-4 Cyl. 19145.0回答：
