Boxplot of Top2b
Next a sanity check: create a boxplot of the expression level of Top2b to confirm the null mice have lower levels of Top2b expression.
Recall that you made a similar boxplot in Chapter 1 Exercise 4.
Este exercício faz parte do curso
Differential Expression Analysis with limma in R
Instruções do exercício
The ExpressionSet object eset with the doxorubicin data has been loaded in your workspace.
Find the row that contains the Top2b data by searching the feature data column
"symbol"for"Top2b".Create a boxplot using the formula syntax. The expression level should be to the left of the
~, and the genotype variable to the right.Pass the feature data frame row to
mainto title the plot.
Exercício interativo prático
Experimente este exercício completando este código de exemplo.
# Find the row which contains Top2b expression data
top2b <- which(___(eset)[___] == "Top2b")
# Plot Top2b expression versus genotype
boxplot(___(eset)[top2b, ] ~ ___(eset)[___],
main = ___(eset)[top2b, ])