R语言报错记录The following objects are masked from ‘package:stats’:decompose, spectrum

报错记录

大家好，这里是想做生信大恐龙的生信小白，这是一条简短的报错记录，参考了其他博主的方法，如有侵权，请联系删除。

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报错原因

使用R语言第三方包 igraph 时出现了以下报错：
The following objects are masked from ‘package:stats’:
decompose, spectrum
The following object is masked from ‘package:base’:
union（如下图）

大概的意思是 stats包、base包被屏蔽（masked）。查阅了一些资料了解到，R语言调用函数时，若有两个同名函数， 在查找到第一个的时候查找停止并进行调用。于是出现了上述报错。

我看可以使用search（）命令查看已经下载的第三方包。

search() #查看下载的第三方包

可以看到 igraph 在第二个位置，stats、base在 igraph 之后，所以出现了上诉报错。

使用decompose可以看到冲突的地方，例如运行decompose后可见

function (graph, mode = c("weak", "strong"), max.comps = NA, 
    min.vertices = 0) 
{
    if (!is_igraph(graph)) {
        stop("Not a graph object")
    }
    mode <- igraph.match.arg(mode)
    mode <- switch(mode, weak = 1, strong = 2)
    if (is.na(max.comps)) {
        max.comps = -1
    }
    on.exit(.Call(C_R_igraph_finalizer))
    .Call(C_R_igraph_decompose, graph, as.numeric(mode), as.numeric(max.comps), 
        as.numeric(min.vertices))
}
<bytecode: 0x000001f52ddc61d0>
<environment: namespace:igraph>

如果我们想要使用被屏蔽的函数可以使用第三方包＋函数名的运行，具体方法见下列代码：

> stats::decompose
function (x, type = c("additive", "multiplicative"), 
    filter = NULL) 
{
    type <- match.arg(type)
    l <- length(x)
    f <- frequency(x)
    if (f <= 1 || length(na.omit(x)) < 2 * f) 
        stop("time series has no or less than 2 periods")
    if (is.null(filter)) 
        filter <- if (!f%%2) 
            c(0.5, rep_len(1, f - 1), 0.5)/f
        else rep_len(1, f)/f
    trend <- filter(x, filter)
    season <- if (type == "additive") 
        x - trend
    else x/trend
    periods <- l%/%f
    index <- seq.int(1L, l, by = f) - 1L
    figure <- numeric(f)
    for (i in 1L:f) figure[i] <- mean(season[index + i], na.rm = TRUE)
    figure <- if (type == "additive") 
        figure - mean(figure)
    else figure/mean(figure)
    seasonal <- ts(rep(figure, periods + 1)[seq_len(l)], start = start(x), 
        frequency = f)
    structure(list(x = x, seasonal = seasonal, trend = trend, 
        random = if (type == "additive") x - seasonal - 
            trend else x/seasonal/trend, figure = figure, type = type), 
        class = "decomposed.ts")
}
<bytecode: 0x000001f52dde10e8>
<environment: namespace:stats>

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解决方法

可以通过library（）的参数warn.conflicts，去除警告, 如下:

library(igraph,warn.conflicts = F)

于是便可去除这一片片红色。

总结

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