Free Knowledge Resources


Linux Manual Pages


Free Software * Books

Source Code

Free Media

Linux

r.out.ascii(1grass)


NAME

   r.out.ascii   -  Converts  a  raster  map layer into a GRASS ASCII text
   file.

KEYWORDS

   raster, export, ASCII

SYNOPSIS

   r.out.ascii
   r.out.ascii --help
   r.out.ascii  [-hsmi]  input=name   [output=name]    [precision=integer]
   [width=integer]      [null_value=string]      [--overwrite]    [--help]
   [--verbose]  [--quiet]  [--ui]

   Flags:
   -h
       Suppress printing of header information

   -s
       Write SURFER (Golden Software) ASCII grid

   -m
       Write MODFLOW (USGS) ASCII array

   -i
       Force output of integer values

   --overwrite
       Allow output files to overwrite existing files

   --help
       Print usage summary

   --verbose
       Verbose module output

   --quiet
       Quiet module output

   --ui
       Force launching GUI dialog

   Parameters:
   input=name [required]
       Name of input raster map

   output=name
       Name for output ASCII grid map (use out=- for stdout)

   precision=integer
       Number of significant digits (floating point only)

   width=integer
       Number of values printed before wrapping a  line  (only  SURFER  or
       MODFLOW format)

   null_value=string
       String to represent null cell (GRASS grid only)
       Default: *

DESCRIPTION

   r.out.ascii  converts  a  user-specified  raster map layer (input=name)
   into an ASCII grid in a text file (output=name) suitable for export  to
   other computer systems.

   The  GRASS  program  r.in.ascii  can  be  used  to  perform the reverse
   function, converting an ASCII file in suitable format to  GRASS  raster
   map format.

   To  write  a  SURFER  .grd ASCII GRID file (with reverted row order and
   different header) use the -s flag:
   r.out.ascii -s input=inname output=outname.grd [dp=value]
   NULL data are coded to  "1.70141e+038"  for  SURFER  ASCII  GRID  files
   (ignoring the null= parameter).

NOTES

   The output from r.out.ascii may be placed into a file by using the UNIX
   redirection mechanism; e.g.:
   r.out.ascii input=soils output=- > out.file
   The output file out.file can then be printed or copied onto a CDROM  or
   floppy disk for export purposes.

   To  export  the  raster values as x,y,z values of cell centers (one per
   line) use the r.out.xyz module.

SEE ALSO

    r.in.ascii, r.in.gdal, r.out.bin, r.out.gdal, r.out.xyz

AUTHOR

   Michael Shapiro, U.S. Army Construction Engineering Research Laboratory

   Surfer support by Markus Neteler

   Last changed: $Date: 2014-11-01 20:57:37 +0100 (Sat, 01 Nov 2014) $

SOURCE CODE

   Available at: r.out.ascii source code (history)

   Main index | Raster index | Topics index | Keywords index  |  Graphical
   index | Full index

    2003-2016 GRASS Development Team, GRASS GIS 7.2.0 Reference Manual



Opportunity


Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.



Free Software


Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.



Free Books


The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.



Education


Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.


birds banner