The suffixes shown are prefixed by the current <ReaderKeyword> in a mapping file. By default, the <ReaderKeyword> for the R reader is RDATA.
DATASET
This is the name of a single R file. The default extension for R files is .rda.
Required/Optional
Required
Mapping File Syntax
RDATA_DATASET /usr/data/rdata/input.rda
Workbench Parameter
Source .rda file
SRC_ENCODING
An R dataset may contain encoding information in its header, or the encoding may be user-specified.
Required/Optional
Optional
Supported Attribute Types
The following table shows the attribute types supported.
|
Field Type |
Description |
|
string(<width>) |
String fields store fixed length strings. The width parameter controls the maximum number of characters that can be stored by the field. No padding is required for strings shorter than this width. |
|
number(<width>,<decimals>) |
Number fields store single and double precision floating point values. The width parameter is the total number of characters allocated to the field, including the decimal point. The decimals parameter controls the precision of the data and is the number of digits to the right of the decimal. |
|
date |
Date fields store date as character string with the format YYYYMMDD. |
|
datetime |
Datetime fields store datetime as character string with the format YYYYMMDDHHMMSS. |
|
time |
Time fields store time as character string with the format HHMMSS. |
SEARCH_ENVELOPE
Using the minimum and maximum x and y parameters, define a bounding box that will be used to filter the input features. Only features that interact with the bounding box are returned.
If all four coordinates of the search envelope are specified as 0, the search envelope will be disabled.
Mapping File Syntax
<ReaderKeyword>_SEARCH_ENVELOPE <minX> <minY> <maxX> <maxY>
Note: If all four coordinates of the search envelope are specified as zero, the search envelope will be disabled.
Required/Optional
Optional
Workbench Parameter
Minimum X, Minimum Y, Maximum X, Maximum Y
SEARCH_ENVELOPE_COORDINATE_SYSTEM
This directive specifies the coordinate system of the search envelope if it is different than the coordinate system of the data.
The COORDINATE_SYSTEM directive, which specifies the coordinate system associated with the data to be read, must always be set if the SEARCH_ENVELOPE_COORDINATE_SYSTEM directive is set.
If this directive is set, the minimum and maximum points of the search envelope are reprojected from the SEARCH_ENVELOPE_COORDINATE_SYSTEM to the reader COORDINATE_SYSTEM prior to applying the envelope.
Required/Optional
Optional
Mapping File Syntax
<ReaderKeyword>_SEARCH_ENVELOPE_COORDINATE_SYSTEM <coordinate system>
Workbench Parameter
Search Envelope Coordinate System
CLIP_TO_ENVELOPE
This directive specifies whether or not FME should clip features to the envelope specified in the SEARCH_ENVELOPE directive.
Values
YES | NO (default)
Mapping File Syntax
<ReaderKeyword>_CLIP_TO_ENVELOPE [yes | no]
Workbench Parameter
Clip To Envelope
EXPOSED_ATTRS
This directive allows the selection of format attributes to be explicitly added to the reader feature type.
This is similar to exposing format attributes on a reader feature type once it has been generated; however, it is even more powerful because it enables schema-driven applications other than Workbench to access and leverage these attributes as if they were explicitly on the schema as user attributes.
The result of picking a list of attributes is a comma-separated list of attribute names and types that will be added to the schema features. Currently all reader feature types will receive the same set of additional schema attributes for a given instance of the reader.
Required/Optional
Optional
Mapping File Syntax
Not applicable.
While it is possible for FME Objects applications to invoke this directive, the required format is not documented.
This directive is intended for use in our GUI applications (for example, Workbench) only.
Workbench Parameter
Additional Attributes to Expose
ENCODING
This specifies the file encoding to use when reading.
Required/Optional
Optional
Values
<encoding>
Workbench Parameter
Character Encoding
|
Encodings |
| BIG5 |
|
CP936 |
| CP950 |
| IBM866 |
| CP932 |
| SHIFT_JIS |
| ISO-8859-1 |
| ISO-8859-2 |
| ISO-8859-3 |
| ISO-8859-4 |
| ISO-8859-15 |
| ISO-8859-6 |
| ISO-8859-5 |
| ISO-8859-7 |
| ISO-8859-8 |
| ISO-8859-9 |
| UTF-8 |
| UTF-16 |
| UTF-16BE |
| UTF-16LE |
| UTF-32 |
| UTF-32BE |
| UTF-32LE |
| WINDOWS-1256 |
| WINDOWS-1257 |
| WINDOWS-1251 |
| WINDOWS-1253 |
| WINDOWS-1255 |
| WINDOWS-1252 |
| WINDOWS-1250 |
| WINDOWS-1258 |
| CP949 |
| EUC-CN |
| EUC-JP |