read.fortran(utils)
read.fortran()所属R语言包：utils
Read Fixed-Format Data
读取固定格式的数据
译者：生物统计家园网 机器人LoveR
描述----------Description----------
Read fixed-format data files using Fortran-style format specifications.
读取固定格式的数据文件，使用Fortran风格的格式规范。
用法----------Usage----------
read.fortran(file, format, ..., as.is = TRUE, colClasses = NA)
参数----------Arguments----------
参数：file
File or connection to read from
读取文件或连接
参数：format
Character vector or list of vectors. See "Details" below.
向量的特征向量或列表。请参阅下面的“详细资料”。
参数：...
Other arguments for read.fwf
其他参数read.fwf
参数：as.is
Keep characters as characters?
保持字符的字符？
参数：colClasses
Variable classes to override defaults. See read.table for details.
变量类来覆盖默认值。看到read.table详情。
Details
详情----------Details----------
The format for a field is of one of the following forms: rFl.d, rDl.d, rXl, rAl, rIl, where l is the number of columns, d is the number of decimal places, and r is the number of repeats. F and D are numeric formats, A is character, I is integer, and X indicates columns to be skipped. The repeat code r and decimal place code d are always optional. The length code l is required except for X formats when r is present.
字段的格式是下列形式之一：rFl.d，rDl.d，rXl，rAl，rIl，其中l列数，d是小数位数，和r是重复的次数。 F和D数字格式，A是字符，I是整数，X表示要跳过的列。重复代码r和小数位代码d总是可选的。长度代码l当X格式r是目前除需要。
For a single-line record, format should be a character vector. For a multiline record it should be a list with a character vector for each line.
单行记录，format应该是一个特征向量。对于一个多行记录，它应该是为每行的字符向量列表。
Skipped (X) columns are not passed to read.fwf, so colClasses, col.names, and similar arguments passed to read.fwf should not reference these columns.
跳过（X）列没有传递给read.fwf，所以colClasses，col.names，传递read.fwf不应该引用这些列的类似的论据。
值----------Value----------
A data frame
数据框
注意----------Note----------
read.fortran does not use actual Fortran input routines, so the formats are at best rough approximations to the Fortran ones. In particular, specifying d > 0 in the F or D format will shift the decimal d places to the left, even if it is explicitly specified in the input file.
read.fortran不使用实际的Fortran输入例程，所以在格式的Fortran的最好的粗糙近似。特别是，指定d > 0F或D格式将小数d地方转移到左侧，即使是在输入文件中明确指定。
参见----------See Also----------
read.fwf, read.table, read.csv
read.fwf，read.table，read.csv
举例----------Examples----------
ff <- tempfile()
cat(file=ff, "123456", "987654", sep="\n")
read.fortran(ff, c("F2.1","F2.0","I2"))
read.fortran(ff, c("2F1.0","2X","2A1"))
unlink(ff)
cat(file=ff, "123456AB", "987654CD", sep="\n")
read.fortran(ff, list(c("2F3.1","A2"), c("3I2","2X")))
unlink(ff)
# Note that the first number is read differently than Fortran would[请注意，第一个数字是比Fortran语言将不同的阅读]
# read it:[阅读：]
cat(file=ff, "12.3456", "1234567", sep="\n")
read.fortran(ff, "F7.4")
unlink(ff)
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注：
注1：为了方便大家学习，本文档为生物统计家园网机器人LoveR翻译而成，仅供个人R语言学习参考使用，生物统计家园保留版权。
注2：由于是机器人自动翻译，难免有不准确之处，使用时仔细对照中、英文内容进行反复理解，可以帮助R语言的学习。
注3：如遇到不准确之处，请在本贴的后面进行回帖，我们会逐渐进行修订。
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发表于 2012-2-16 18:57:12
