过滤数据框中的值 [英] Filter values in data frame
问题描述
alpha98 alpha105 alpha112 alpha119
YAL002W 0.22 0.58 -0.36 0.13
YAL003W 0.05 0.55 -0.08 0.33
任何帮助都会很棒。
R
是矢量化的, R
这意味着,一般来说,就像 myDF>阈值
会让你非常接近你所需要的。
具体来说,它会为您提供与您的数据具有相同维度的逻辑
当DF中的单元格超过阈值(矩阵
.frame FALSE
)时, TRUE
否则)。
然后,您可以使用该矩阵作为工具来对数据进行子集化。
myDF [myDF>阈值]
Basically, I have a gene dataset in which the rows are genes and columns are sequential time points of protein folding. I need a function to filter genes of a certain threshold value from others across the entire data set, not just for certain vectors. For example:
alpha98 alpha105 alpha112 alpha119
YAL002W 0.22 0.58 -0.36 0.13
YAL003W 0.05 0.55 -0.08 0.33
Any help would be great.
R
is vectorized and R
recycles. That means, that generally, something as simple as myDF > threshold
will get you awfully close to what you need.
Specifically, it will give you a logical matrix
of the same dimensions as your data.frame
which will be TRUE
when that cell in the DF exceeds the threshold (and FALSE
otherwise).
You can then use that matrix as your tool to subset the data.frame.
myDF[myDF > threshold]
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