HELMAP                 package:RTOMO                 R Documentation

_G_e_o_g_r_a_p_h_i_c _m_a_p _o_f _M_t. _S_t. _H_e_l_e_n_s _S_u_m_m_i_t _r_e_g_i_o_n

_D_e_s_c_r_i_p_t_i_o_n:

     Geographic map of Mt. St. Helens Summit region. Lnes showing water
     shed and outline of tree line prior to 1980 eruption.

_U_s_a_g_e:

     data(HELMAP)

_F_o_r_m_a_t:


     _S_T_R_O_K_E_S list of meta data for map

     _n_a_m name of stroke

     _n_u_m number of points

     _i_n_d_e_x starting index

     _c_o_l color

     _s_t_y_l_e style, 1,2,3

     _c_o_d_e geographic code

     _L_A_T_1 Lower left latitude 

     _L_A_T_2 upper right latitude 

     _L_O_N_1 Lower left  longitude

     _L_O_N_2 upper right longitude

     _P_O_I_N_T_S points structure

     _l_a_t latitudes

     _l_o_n longitudes

     _P_R_O_J projection list

     _t_y_p_e type of projection, 2=UTM

     _L_A_T_0 origin latitude

     _L_O_N_0 origin longitude 

     _L_A_T_1 other parameters that depend on projection

     _L_A_T_2 other parameters that depend on projection

     _L_A_T_S other parameters that depend on projection

     _S other parameters that depend on projection

     _N other parameters that depend on projection

     _L_O_N_S other parameters that depend on projection

     _E other parameters that depend on projection

     _W other parameters that depend on projection

     _D_L_A_T other parameters that depend on projection

     _D_L_O_N other parameters that depend on projection

     _F_E false easting

     _F_N false northing

     _n_a_m_e name of projection

_R_e_f_e_r_e_n_c_e_s:

     Lees, J. M.  (1992): The magma system of Mount St. Helens:
     Non-linear high resolution P-wave tomography, J. Volc. Geoth.
     Res., 53(1-4), 103-116.

_E_x_a_m_p_l_e_s:

     data(HELMAP)
     ## maybe str(HELMAP) ; plot(HELMAP) ...

