I ve在上发现了一些关于xts领域代表性的信息。 read,但我仍不清楚Xts是指数+矩阵的原因。 为什么没有指数+数据框架? 在处理因素和计数栏时是否允许更大的灵活性?
一旦我把装满的数据输入Xts,大部分工作就是在全套时间序列或分系列进行数字操作。 指数化工作做得很好,但我不得不通过电话,如<编码>data.frame(数据.matrix(myxts),以提取各种因素和数字栏目。
此外,我发现比矩阵索引更方便使用美元,尽管这确实是一个不同的问题。 例如:
lm(myxts$Res ~ myxts$ThisVar + myxts$ThatVar)
较易写
lm(myxts[, "Res"] ~ myxts[, "ThisVar"] + myxts[, "ThatVar"]).
xts使用矩阵而不是数据。 框架:
您的第二个问题可以通过使用<代码>=的论点至lm,或者更广泛地使用 with来解决:
with(myxts, lm(Res ~ ThisVar + ThatVar))
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