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NAMEr.in.ascii - Converts a GRASS ASCII raster file to binary raster map.KEYWORDSraster, import, conversion, ASCIISYNOPSISr.in.asciir.in.ascii --help r.in.ascii [-s] input=name output=name [type=string] [title=phrase] [multiplier=float] [null_value=string] [--overwrite] [--help] [--verbose] [--quiet] [--ui] Flags:
Parameters:
DESCRIPTIONr.in.ascii allows a user to create a (binary) GRASS raster map layer from an ASCII raster input file with (optional) TITLE.The GRASS ASCII input file has a header section which describes the location and size of the data, followed by the data itself. The header has 6 lines:
north: xxxxxx.xx south: xxxxxx.xx east: xxxxxx.xx west: xxxxxx.xx rows: r cols: cThe north, south, east, and west field values entered are the coordinates of the edges of the geographic region. The rows and cols field values entered describe the dimensions of the matrix of data to follow. The data which follows is r rows of c integers. Optionally the following parameters can be defined in the header
section:
null: nn type: float multiplier: 2. "null" defines a string or number to be converted to
NULL value (no data).
NOTESThe geographic coordinates north, south, east, and west describe the outer edges of the geographic region. They run along the edges of the cells at the edge of the geographic region and not through the center of the cells at the edges. The NW value occurs at the beginning of the first line of data, and the SW value occurs at the beginning of the last line of data.The data (which follows the header section) must contain r x c values, but it is not necessary that all the data for a row be on one line. A row may be split over many lines. The imported cell type can be forced using the type option, default is auto-detection. The header information in ESRI Raster ASCII files differs from GRASS. To convert an Arc/Info (ArcView) ASCII grid file into GRASS, see r.in.gdal. SURFER (Golden Software) ASCII files may be imported by passing the -s flag. EXAMPLEThe following is a sample input file to r.in.ascii:north: 4299000.00 south: 4247000.00 east: 528000.00 west: 500000.00 rows: 10 cols: 15 null: -9999 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 SEE ALSOr.import, r.out.ascii, r.in.gdal, r.out.gdal, r.in.bin, r3.in.asciiAUTHORMichael Shapiro, U.S. Army Construction Engineering Research LaboratorySurfer support by Roger Miller SOURCE CODEAvailable at: r.in.ascii source code (history)Main index | Raster index | Topics index | Keywords index | Graphical index | Full index © 2003-2021 GRASS Development Team, GRASS GIS 7.8.6 Reference Manual
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