SpletWe basically have two solutions for our problem. 1) We can use the apply function to return the mean of all variables in our data frame: apply ( data, 2, mean) # Properly using apply … SpletDefinition of median(): The median R function computes the sample median of a numeric input vector. The R tutorial contains five examples for the application of the median …

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Splet26. maj 2024 · 通过 exprs 函数获取表达矩阵后我们可以通过以下三种方法判断是否需要进行log2转换 1.肉眼识别 最简单粗暴的方法就是，根据数值大小粗略估计： 如果表达量的数值在50以内，通常是经过log2转化后的。 如果数字在几百几千，则是未经转化的。 因为2的几十次方已经非常巨大，如果2的几百次方，则不符合实际情况。 比如，下面这个矩阵，我们 … Spletsapply function with additional arguments. The sapply function in R allows you to pass additional arguments to the function you are applying after the function. Consider the following list with one NA value:. my_list <- list(A = c(1, 4, 6), B = c(8, NA, 9 , 5)) If you apply the sum function to each element of the list it will return the sum of the components of … corona schnelltest in elmshorn

Calculate median of a row in a dataframe and save to new variable

Splet03. avg. 2024 · max (df) #results in NA instead of max value Output = NA. So to avoid this and get the max value we are using na.rm function to remove NA values from the vector. Now you can see that the max() function is returning the maximum value. #max function with remove NA values is set as TRUE. max (df, na.rm = T) Output = 876 SpletFor this first example we are going to apply the sum function over the data frame. apply(X = df, MARGIN = 1, FUN = sum) Note that in this function it is usual to not specify the argument names due to the simplicity of the function, but remember the order of the arguments. apply(df, 1, sum) Output 16 19 22 25 SpletYou just need to add na.rm=TRUE to your apply call. apply(df,2,max,na.rm=TRUE) Note: This does assume every column has at least one data point. If one does not sum will return 0. … corona schnelltest green spring profi