问题标签 [zoo]

我有一个看起来像这样的动物园对象：

我尝试使用 lattice 在 2 个不同的面板中同时绘制两列：
xyplot(z)

这为两个面板提供了相同的 x 轴，但 ylim 不同。我希望他们拥有相同的 ylim，所以我尝试xyplot(z, ylim=range(z[,1]))它没有做任何事情，所以在阅读“Plot zoo Series with Lattice”之后，我trellis.focus("panel", 2,1,ylim=range(z[,1]))也尝试了但没有任何运气......

这可能是一件容易的事，但我发现 lattice 包很难使用（至少开始时）。任何人都可以帮忙吗？

谢谢！

我有一个动物园，每天的数据如下所示： > head(almorol)
1973-10-02 1973-10-03 1973-10-04 1973-10-05 1973-10-06 1973-10-07
183.9 208.2 153.7 84.8 52.5 35.5

我想绘制年度总数和移动平均值，所以我做了：

y<-apply.yearly(almorol, FUN=sum)
plot(y, main="Annual totals - Tagus (Almorol)",ylab="Q (m3/s)")
lines(rollapply(y, 10, mean, na.rm=TRUE), col="red", lwd=2)

效果很好，但是由于数据不连续，折线图不正确。如果我用点来做这件事很难理解，所以我想做一个条形图。但是，当我这样做时barplot(y)，x ax 以 yy-mm-dd 格式出现，而不仅仅是年份，而且我无法添加移动平均线（它不会给出错误，只是不会出现）。

感谢您的帮助！

编辑：> y
1973-12-31 1974-12-31 1975-12-31 1976-12-31
19224.20 103766.30 72180.90 55939.80
1977-12-31 1978-12-31 1979-12-31 1980-12-31
215905.00 231014.21 319481.02 58979.84
1981-12-31 1982-12-31 1983-12-31 1984-12-31
32931.17 67989.06 83920.62 99431.75
1985-12-31 1986-12-31 1987-12-31 1988-12-31
161357.10 82910.87 101154.81 147541.80
1989-12-31 1990-12-31 1991-12-31 1992-12-31
137684.21 134974.39 89039.02 20774.72
1993-12-31 1994-12-31 1995-12-31 1996-12-31
58916.95 55187.38 52361.77 271064.34
1997-12-31 1998-12-31 1999-12-31 2000-12-31
220510.88 125116.62 42170.95 103915.99
2001-12-31 2002-12-31 2003-12-31 2004-12-31
244513.59 66811.15 167458.93 67223.66
2005-12-31 2006-12-31 2007-12-31 2008-12-31
8906.31 116874.33 79105.30 40142.61
2009-12-31 2010-12-31 2011-05-31
43835.34 161491.77 73093.06

我有一个日常动物园（xts），里面有几十年的数据，格式如下：

我只想绘制冬季数据（12 月、1 月和 2 月的整个月份）。我找到了 xts 的子集，所以我想我可以使用以下方法提取所有十二月：

然后为一月和二月做类似的事情，但我收到以下错误：

我可以单独使用apply.yearlyandlast(almorol, "1 month")但是当我将它们结合起来时它不起作用。有谁知道对这 3 个月的时间序列进行子集化的方法？感谢您的帮助！

我有一个包含两列的文本文件。第一列包含格式为 mm/dd/yyyy 的日期，第二列包含数据。还有一个标题行。一个片段如下：

该系列是不规则的，因为在某些日期没有收集数据。没有。行数接近 2500。我想在此类系列上做一些时间序列工作。

但是，当我键入以下代码时，会出现错误。

错误是：

请帮我把它弄对。

我有一些带有动物园对象的文件，看起来像这样（每个文件在不同的日期开始和结束）：

我想在 9 月、10 月和 11 月的所有文件的 pp 之间做一个相关矩阵（显示代码，以便我可以识别谁是谁）。由于代码列中的 NA，我无法使用 list.files 函数（由 Joran 在不同文件之间的相关矩阵中提供的代码）。所以我想出了以下代码：

但是有些问题：在相关矩阵中，一些列/行名称有一个额外的“.z”或“.CET”，最重要的是相关系数不正确！我找不到问题所以任何帮助找到问题或提出更简单的代码来做到这一点将不胜感激！

我有数据被编程为每 5 小时获取一次信息，这意味着每天有多个数据点。问题有时是数据记录器出现故障或电池没电或其他任何情况，并且数据丢失或尝试失败。

我所做的所有分析都是基于这些日期。我需要根据此日期/时间戳对所有内容进行排序、过滤和选择。截至目前，我正在通过“冗长的”脚本来选择和子集我的数据。此外，我有几个数据记录器（个人），所以我也在批处理。例如，我想子集化并每天只使用一个数据点，我

那么，有没有办法让我的数据变成时间序列数据，让操作更容易呢？我已经看到有关 Zoo package a xts 的讨论 - 但这些似乎要求数据处于常规时间序列中。我什至不得不不使用某些脚本，因为它们要求数据采用 ts 格式，而我不知道如何将我的数据转换成那种漂亮的格式。有没有很好的资源来教自己这个？我什至应该使用 ts 吗？

这是我的数据的示例： structure(list(ID = structure(c(1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L), .Label = c("c_002", "c_402"), class = "factor"), Long = c(-147.635233, -147.635232, -147.63632, -147.636136, -147.63628, -147.635743, -147.631785, -147.619598, -147.605088, -147.602119, -147.179737, -147.133275, -147.106584, -147.033649, -147.016078, -147.031872, -146.940969, -146.862538, -146.751214, -146.696238, -146.710799), Latitude = c(67.911827, 67.911193, 67.911048, 67.911169, 67.911625, 67.911767, 67.919419, 67.926327, 67.925352, 67.926318, 70.017026, 70.041163, 70.057988, 70.087812, 70.117134, 70.147184, 70.145115, 70.136103, 70.1276, 70.103395, 70.079301), DT = structure(c(2L, 3L, 5L, 6L, 8L, 9L, 10L, 11L, 12L, 14L, 393L, 395L, 396L, 398L, 399L, 401L, 402L, 404L, 405L, 407L, 409L), .Label = c("05/01/2006 00:00", "05/01/2006 00:01", "05/01/2006 05:00", "05/01/2006 05:01", "05/01/2006 10:00", "05/01/2006 15:01", "05/01/2006 20:00", "05/01/2006 20:01", 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我有两组来自不同机器的测量值。它们随着时间的推移以略微不同的间隔进行测量 - 例如，一个每 5 分钟测量一次，而另一个每 3 分钟测量一次。优点是每 5 分钟计算一次作为整个间隔的平均值，因此这些值应该大致对应。我想用每 5 分钟测量一次的向量（光）来扩展向量，以便它的值与每 5 分钟测量一次的向量值大致同步。然后应该用前面的值填充间隙

这是每 5 分钟的数据示例

和每3分钟的数据

我也不应该认为光测量的向量（每 5 分钟）比每 3 分钟的向量短。因此，目标是使 5 分钟测量的向量与 3 分钟向量的长度相同。

我意识到这是一个相当棘手的问题，但任何建议都会受到欢迎。

我正在使用动物园对象，购买我的问题也适用于 xts 对象。在我看来，它是一个带有索引的单列向量。在我的情况下，索引是日期向量和我的数据的一列向量。除了我想访问日期（来自索引）之外，一切都很好。

例如我有以下结果：

我想进入14789一个变量或一个向量，但我不知道如何访问它。

有没有办法从 data.frame 创建 xts 对象并保留数据类型？我的数字正在转换为字符。2009 年的这篇文章建议将列合并到现有的 xts 中： http: //r.789695.n4.nabble.com/as-xts-convert-all-my-numeric-data-to-character-td975564.html

目前尚不清楚这是否是唯一的方法。对于大型数据帧来说，这似乎有点麻烦和麻烦。我认为开箱即用的 xts 会尊重数据类型。

Suppose I have two 'zoo' vectors, of equal length, with the same indices for both.

Is there a simple function that allows me to take the average of both, by date (index)?

Thanks!