objdesp.gdsn {gdsfmt} | R Documentation

## Variable description

### Description

Get the description of a GDS node.

### Usage

    objdesp.gdsn(node)

### Arguments

`node` | an object of class `gdsn.class`, a GDS node

### Value

Returns a list:

`name` | the variable name of a specified node
`fullname` | the full name of a specified node
`storage` | the storage mode in the GDS file
`trait` | the description of data field, like "Int8"
`type` | a factor indicating the storage mode in R: Label – a label node, Folder – a directory, VFolder – a virtual folder linking to another GDS file, Raw – raw data (`addfile.gdsn`), Integer – integers, Factor – factor values, Logical – logical values (FALSE, TRUE and NA), Real – floating numbers, String – characters, Unknown – unknown type
`is.array` | indicates whether it is array-type
`is.sparse` | TRUE, if it is a sparse array
`dim` | the dimension of data field
`encoder` | encoder for compressed data, such like "ZIP"
`compress` | the compression method: "", "ZIP.max", etc
`cpratio` | data compression ratio, `NaN` indicates no compression
`size` | the size of data stored in the GDS file
`good` | logical, indicates the state of GDS file, e.g., FALSE if the virtual folder fails to link the target GDS file
`hidden` | logical, `TRUE` if it is a hidden object
`message` | if applicable, messages of the GDS node, such like error messages, log information
`param` | the parameters, used in `add.gdsn`, like "maxlen", "offset", "scale"

### Author(s)

Xiuwen Zheng

### References

http://github.com/zhengxwen/gdsfmt

### See Also

`cnt.gdsn`, `name.gdsn`, `ls.gdsn`, `index.gdsn`

### Examples

    # cteate a GDS file
    f <- createfn.gds("test.gds")

    # add a vector to "test.gds"
    node1 <- add.gdsn(f, name="vector1", val=1:10000)
    objdesp.gdsn(node1)

    # add a vector to "test.gds"
    node2 <- add.gdsn(f, name="vector2", val=1:10000, compress="ZIP.max",
        closezip=FALSE)
    objdesp.gdsn(node2)

    # add a character to "test.gds"
    node3 <- add.gdsn(f, name="vector3", val=c("A", "BC", "DEF"),
        compress="ZIP", closezip=TRUE)
    objdesp.gdsn(node3)

    # close the GDS file
    closefn.gds(f)

    # delete the temporary file
    unlink("test.gds", force=TRUE)

[Package gdsfmt version 1.30.0 Index]