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我遇到ggplot2庫中的ggsave（）問題。我寫了一個函數來傳遞參數，並且這個函數應該會產生並用ggsave（）保存結果。ggave（）錯誤：未知輸入R
下面是一些例子數據和代碼重現錯誤：
example.df.1 <- data.frame(matrix(1:100, nrow = 20, ncol = 5))
colnames(example.df.1) <- c("var1", "var2", "var3", "var4", "var5")
rownames(example.df.1) <- c("A", "B", "C", "D", "E", "F", "G", "H",
"I", "J", "K", "L", "M", "N", "O", "P",
"Q", "R", "S", "T")
example.df.2 <- data.frame(matrix(ncol = 2, nrow = 24))
example.df.2[,1] <- c("A", "B", "C", "D", "E", "F", "G", "H",
"I", "J", "K", "L", "M", "N", "O", "P",
"Q", "R", "S", "T", "U", "V", "W", "X")
example.df.2[,2] <- rnorm(24, 10, 2)
problematic_func <- function(data1, col, title, var, data2) {
# only include rows without missing values
loc1 <- subset(data1, rowSums(is.na(data1)) == 0)
loc1 <- cbind(loc1, rank(-as.data.frame(loc1[,1]), ties.method = "first"))
# reduce data2 to only those rows that correspond to rows in data1
loc2 <- data2[data2[,1] %in% rownames(loc1),]
# order loc2
loc2.ordered <- loc2[order(loc2[,1]),]
# correlation between loc1 and loc2.ordered
corr <- cor(loc1[,1], loc2.ordered[,2])
# creating the plot
i <- ggplot(loc1, aes_q(x = loc1[,1], y = loc2.ordered))
i <- i + geom_point(colour = col, size = 4)
i <- i + ggtitle(title)
i <- i + xlab(var)
i <- i + ylab("y-axis")
i <- i + coord_cartesian(xlim = c(0, max(loc1[,1])),
ylim = c(0, max(loc2.ordered[,2])*1.2))
i <- i + annotate("text", x = max(loc1[,1])*.5, y = 1,
label = paste("Correlation coef: ", as.character(corr)), size = 3)
# saving the plot - this is where the error occurs according
# to the debugger
ggsave(filename = paste("my_example_plot_", var, ".png", sep = ""),
plot = i, device = png, width = 625, height = 625, limitsize = FALSE)
}
for (i in 1:ncol(example.df.1)) {
sv <- as.data.frame(example.df.1[,i])
rownames(sv) <- rownames(example.df.1)
problematic_func(sv, "orange", colnames(example.df.1[i]),
colnames(example.df.1[i]), data2 = example.df.2)
}
編輯：對不起，我忘了補充我的錯誤：
Error in FUN(X[[2L]], ...) : Unknown input:data.frame