r.in.ascii(1)		      Grass User's Manual		 r.in.ascii(1)



NNAAMMEE
       rr..iinn..aasscciiii   - Convert an ASCII raster text file into a (binary) raster
       map layer.
       _(_G_R_A_S_S _R_a_s_t_e_r _D_a_t_a _I_m_p_o_r_t _P_r_o_g_r_a_m_)

SSYYNNOOPPSSIISS
       rr..iinn..aasscciiii
       rr..iinn..aasscciiii hheellpp
       rr..iinn..aasscciiii [--iiffddss] iinnppuutt==_n_a_m_e oouuttppuutt==_n_a_m_e [TTIITTLLEE=="_p_h_r_a_s_e"] [mmuulltt==_m_u_l_t_i_-
       _p_l_i_e_r]

DDEESSCCRRIIPPTTIIOONN
       _r_._i_n_._a_s_c_i_i  allows  a  user to create a (binary) GRASS raster map layer
       from an ASCII raster input file with (optional) TITLE.

OOPPTTIIOONNSS
   FFllaaggss::
       --ii     integer values are imported

       --ff     floating point values are imported

       --dd     double floating point values are imported

       --ss     SURFER (Golden Software) ascii grid file will be imported


   PPaarraammeetteerrss::
       iinnppuutt==_n_a_m_e
	      Name of an existing ASCII raster file to be imported.

       oouuttppuutt==_n_a_m_e
	      Name to be assigned to resultant binary raster map layer.

       TTIITTLLEE== Title to be assigned to resultant raster map layer.

       mmuulltt==_m_u_l_t_i_p_l_i_e_r
	      Multiply all raster cell values by _m_u_l_t_i_p_l_i_e_r.  _m_u_l_t_i_p_l_i_e_r is  a
	      floating point value, and has a default value of 1.0.

       The  iinnppuutt  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:	c

       The north, south, east, and west field values entered are  the  coordi-
       nates  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 sec-
       tion:


       null: nn

       type: float

       multiplier: 2.



       "null" defines a string or number to be converted  to  NULL  value  (no
       data).

       "type" defines the data type (int, float double) as is not required.

       "multiplier" is an optional parameter to multiply each cell value.

EEXXAAMMPPLLEE
       The following is a sample iinnppuutt file to _r_._i_n_._a_s_c_i_i:


       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


NNOOTTEESS
       The  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 _n_o_t through the center
       of the cells at the edges.


       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.


       _r_._i_n_._a_s_c_i_i handles floating point cell values.


       The header information in ESRI Raster ASCII files differs  from	GRASS.
       To  convert  an	Arc/Info  (ArcView)  ASCII grid file into GRASS, click
       here.  Also, see _r_._i_n_._a_r_c to import ESRI Raster ASCII files.

SSEEEE AALLSSOO
       _m_._f_l_i_p_, _r_._o_u_t_._a_s_c_i_i_, _r_._i_n_._a_r_c_, _r_._o_u_t_._a_r_c_, _r_._i_n_._b_i_n_, _G_R_A_S_S _A_S_C_I_I _f_o_r_m_a_t_s


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

       Surfer support by Roger Miller

       _L_a_s_t _c_h_a_n_g_e_d_: _$_D_a_t_e_: _2_0_0_3_/_0_3_/_1_6 _1_2_:_2_5_:_1_9 _$



GRASS 5.0							 r.in.ascii(1)
