m.rot90(1)		      Grass User's Manual		    m.rot90(1)



NNAAMMEE
       mm..rroott9900	- Rotates elevation data extracted by either _m_._d_m_a_U_S_G_S_r_e_a_d
       _(_G_R_A_S_S _D_a_t_a _I_m_p_o_r_t_/_P_r_o_c_e_s_s_i_n_g _P_r_o_g_r_a_m_)

SSYYNNOOPPSSIISS
       mm..rroott9900
       mm..rroott9900 hheellpp
       mm..rroott9900 [--qq] iinnppuutt==_n_a_m_e oouuttppuutt==_n_a_m_e rroowwss==_v_a_l_u_e ccoollss==_v_a_l_u_e bbppcc==_v_a_l_u_e

DDEESSCCRRIIPPTTIIOONN
       _m_._r_o_t_9_0 is used as a companion program to the DTED and DEM digital ele-
       vation data tape extraction programs _m_._d_t_e_d_._e_x_t_r_a_c_t and	_m_._d_m_a_U_S_G_S_r_e_a_d.
       _m_._r_o_t_9_0	rotates  the  contents	of the output files generated by these
       tape extraction programs 90 degrees.  Rotation is necessary to  compen-
       sate  for the orientation of the data read from tape.  This program can
       be used in conjunction with the program _r_._i_n_._l_l to convert this rotated
       data into GRASS raster map layer form.


       _m_._r_o_t_9_0	requires five inputs to be entered by the user.  These parame-
       ters and the optional flag setting are described below.



   FFllaaggss::
       --qq     Run quietly, suppressing output of messages on program  progress
	      to standard output.




   PPaarraammeetteerrss::
       iinnppuutt==_n_a_m_e
	      The  full  pathname  of  an already-existing file containing the
	      data to be rotated.  This _i_n_p_u_t file is usually the output  file
	      created by _m_._d_m_a_U_S_G_S_r_e_a_d.

       oouuttppuutt==_n_a_m_e
	      Name  to be assigned to the resultant, rotated output file.  The
	      full pathname of the output file in which the rotated  data  are
	      to be stored.

       rroowwss==_v_a_l_u_e
	      The number of rows of data in the _i_n_p_u_t file.

       ccoollss==_v_a_l_u_e
	      The number of columns of data in the _i_n_p_u_t file.

       bbppcc==_v_a_l_u_e
	      The number of bytes per cell in the _i_n_p_u_t file.


EEXXAAMMPPLLEE
       The following command:


       mm..rroott9900	 iinnppuutt==_/_t_m_p_/_d_m_a_._o_u_t   oouuttppuutt==_/_t_m_p_/_r_o_t_._o_u_t   rroowwss==_3_0_1  ccoollss==_3_5_8
       bbppcc==_2



       will rotate the file  /tmp/dma.out,  and  place	the  rotated  file  in
       /tmp/rot.out.   Here,  the  input file is 301 rows by 358 columns, at 2
       bytes per data value.

NNOOTTEESS
       The user should note that since the output file is rotated  90  degrees
       from  the  original  input  file, the rows and columns have been inter-
       changed.  Hence, in the above example, the number  of  rows  (301)  and
       columns (358) stated by the user on the command line were those present
       in the _i_n_p_u_t file.  The output file, however, will have	358  rows  and
       301 columns.

SSEEEE AALLSSOO
       _P_u_r_s_u_a_n_c_e _o_f _E_l_e_v_a_t_i_o_n _D_a_t_a, by Stuart Bradshaw, USACERL
       DTED  and DEM Elevation Data Extraction, by Stuart Bradshaw , Mary Mar-
       tin, and Chester Kos, USACERL


       _g_._r_e_g_i_o_n

       _m_._d_m_a_U_S_G_S_r_e_a_d

       _m_._d_t_e_d_._e_x_a_m_i_n_e

       _m_._d_t_e_d_._e_x_t_r_a_c_t

       _m_._e_x_a_m_i_n_e_._t_a_p_e

       _m_._f_l_i_p

       _m_._r_e_g_i_o_n_._l_l

       _r_._d_e_s_c_r_i_b_e

       _r_._i_n_._l_l

       _r_._r_e_s_c_a_l_e

       _r_._s_l_o_p_e_._a_s_p_e_c_t

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

       _L_a_s_t _c_h_a_n_g_e_d_: _$_D_a_t_e_: _2_0_0_2_/_0_1_/_2_5 _0_5_:_4_5_:_3_3 _$



GRASS 5.0							    m.rot90(1)
