我有一个gene.csv文件，大小约为1.3 GB，具有300列和超过一百万行。看起来像这样
id1 id2 id3 id4 count1 count2
S1001 450 GAF ARHGAP18 1.56E-05 1483
S1001 450 GAF ARHGAP12 5E-05 3698
S1001 450 GAF ARHGAP15 2.75E-06 93
S1001 450 GAF ARHGAP17 3E-05 1889
S1001 450 GAF ARHGAP19 4.291E-06 596
S1002 450 GAF ARHGAP18 5.955E-05 5353
S1002 450 GAF ARHGAP12 8.578E-08 14
S1002 450 BAF ARHGAP15 2.91E-05 5381
S1002 450 BAF ARHGAP17 1.78E-06 105
S1002 450 BAF ARHGAP19 3.62E-05 5764
S1003 450 BAF ARHGAP18 5.2697E-06 330
S1003 450 BAF ARHGAP12 5.955E-05 2263
S1003 450 BAF ARHGAP15 8.578E-08 3147
S1003 450 CAF ARHGAP17 2.91E-05 50
S1003 450 CAF ARHGAP19 5.955E-05 1595
S1004 450 CAF ARHGAP18 8.578E-08 970
S1004 450 CAF ARHGAP12 2.91E-05 816
S1004 450 CAF ARHGAP15 5.955E-05 4981
S1004 450 CAF ARHGAP17 8.578E-08 816
S1004 450 CAF ARHGAP19 2.91E-05 4981
我只想要ID1。以以下格式（作为矩阵）获取id4和count2数据
id4 S1001 S1002 S1003 S1004
ARHGAP18 1483 5353 330 970
ARHGAP12 3698 14 2263 816
ARHGAP15 93 5381 3147 4981
ARHGAP17 1889 105 50 816
ARHGAP19 596 5764 1595 4981
我需要id1作为列ID（仅重复一次）。