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R中的变化数据框架
原标题:Transform data frame in R

enter image description here I need some advice about which package command I can use in R to get from df to df2:

data frame called df where: ex this is the head of df:

GeneIndex   SampleIndex tpm GeneID  GeneName
<int>   <int>   <dbl>   <chr>   <chr>
1   0   3893    3.231526e-01    ENSG00000223972.5   DDX11L1
2   0   14906   0.000000e+00    ENSG00000223972.5   DDX11L1
3   0   7474    0.000000e+00    ENSG00000223972.5   DDX11L1
4   0   1220    3.824092e-29    ENSG00000223972.5   DDX11L1
5   0   15831   0.000000e+00    ENSG00000223972.5   DDX11L1
6   0   5471    1.445461e-01    ENSG00000223972.5   DDX11L1
.        ...     ...      ..                ..                  ..

To this where it looks more like a gene matrix as an example: Where the SampleIndex is now transposed, the tpm values are maintained for each sample index and geneid; and the rows are GeneID df2

GeneID                3893        14906       7474        1220          15831       5471 
ENSG00000223972.5  3.231526e-01 0.000000e+00 0.000000e+00 3.824092e-29 0.000000e+00 1.445461e-01

尚未成功......

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