日期和时间作为索引I具有以下文件read.zoo与R中
"Index" "time" "open" "high" "low" "close" "numEvents" "volume"
2013-01-09 14:30:00 "2013-01-09T14:30:00.000" "110.8500" "110.8500" "110.8000" "110.8000" " 57" "32059"
2013-01-09 14:31:00 "2013-01-09T14:31:00.000" "110.7950" "110.8140" "110.7950" "110.8140" " 2" " 1088"
2013-01-09 14:32:00 "2013-01-09T14:32:00.000" "110.8290" "110.8300" "110.8290" "110.8299" " 5" " 967"
2013-01-09 14:33:00 "2013-01-09T14:33:00.000" "110.8268" "110.8400" "110.8268" "110.8360" " 8" " 2834"
2013-01-09 14:34:00 "2013-01-09T14:34:00.000" "110.8400" "110.8400" "110.8200" "110.8200" " 33" " 6400"
欲读取该文件到一个动物园(或XTS)在R.对象时,此文件被创建为XTS对象并使用write.zoo(as.zoo(xts_object), path, sep = "\t")
保存,现在我正在尝试使用zoo_object <- read.zoo(path, sep = "\t", header=TRUE, format="%Y-%m-%d %H:%M:%S")
来读取它。不过,我得到以下警告
Warning message:
In zoo(rval3, ix) :
some methods for “zoo” objects do not work if the index entries in ‘order.by’ are not unique
当我键入zoo_object
到控制台,以显示其内容,我得到:
time open high low close numEvents volume
2013-01-09 2013-01-09T14:30:00.000 110.8500 110.850 110.8000 110.8000 57 32059
2013-01-09 2013-01-09T14:31:00.000 110.7950 110.814 110.7950 110.8140 2 1088
2013-01-09 2013-01-09T14:32:00.000 110.8290 110.830 110.8290 110.8299 5 967
2013-01-09 2013-01-09T14:33:00.000 110.8268 110.840 110.8268 110.8360 8 2834
2013-01-09 2013-01-09T14:34:00.000 110.8400 110.840 110.8200 110.8200 33 6400
在这里你可以看到的时间不包括在该行的索引。我假设我可以将时间字段转换为索引并修复我的问题,但是我也假定我在阅读这个文件时(或者可能写了)做了错误的事情,但是整天搜索后我不知道是什么。谁能提供任何见解?
dput(zoo_object)
后读取
dput(zoo_object)
structure(c("2013-01-09T14:30:00.000", "2013-01-09T14:31:00.000",
"2013-01-09T14:32:00.000", "2013-01-09T14:33:00.000", "2013-01-09T14:34:00.000",
"110.8500", "110.7950", "110.8290", "110.8268", "110.8400", "110.850",
"110.814", "110.830", "110.840", "110.840", "110.8000", "110.7950",
"110.8290", "110.8268", "110.8200", "110.8000", "110.8140", "110.8299",
"110.8360", "110.8200", "57", " 2", " 5", " 8", "33", "32059",
" 1088", " 967", " 2834", " 6400"), .Dim = c(5L, 7L), .Dimnames = list(
NULL, c("time", "open", "high", "low", "close", "numEvents",
"volume")), index = structure(c(15714, 15714, 15714, 15714,
15714), class = "Date"), class = "zoo")
不'read.zoo'有多列值的'index.column'参数吗?从控制台测试中构建动物园对象太多了,所以无数次:为什么人们不会学习使用'dput'来发布示例? –
对不起,我是R新手,并试图在飞行中学习。我不知道dput会有用。另外,我的问题是关于从文件到动物园对象。当我将它读入计算机时,我已经错过了时间。我也不确定'index.column'是什么,但我现在要去查看它。 – MarkB42