hdr {raster} | R Documentation

## Header files

### Description

Write header files to use together with raster binary files to read the data in other applications.

### Usage

    hdr(x, format, extension='.wld')

### Arguments

`x` | RasterLayer or RasterBrick object associated with a binary values file on disk
`format` | Type of header file: 'VRT', 'BIL', 'ENVI', 'ErdasRaw', 'IDRISI', 'SAGA', 'RASTER', 'WORLDFILE', 'PRJ'
`extension` | File extension, only used with an ESRI worldfile (`format='WORLDFILE'`)

### Details

The RasterLayer object must be associated with a file on disk.

You can use `writeRaster` to save a existing file in another format. But if you have a file in a 'raster' format (or similar), you can also only export a header file, and use the data file (.gri) that already exists. The function can write a VRT (GDAL virtual raster) header (.vrt); an ENVI or BIL header (.hdr) file; an Erdas Raw (.raw) header file; an IDRISI (.rdc) or SAGA (.sgrd). This (hopefully) allows for reading the binary data (.gri), perhaps after changing the file extension, in other programs such as ENVI or ArcGIS.

### See Also

`writeRaster`, `writeGDAL`

### Examples

    r <- raster(system.file("external/test.grd", package="raster"))
    r <- writeRaster(r, filename='export.grd', overwrite=TRUE)
    hdr(r, format="ENVI")

[Package raster version 2.5-2 Index]