wm4                   package:alr3                   R Documentation

_W_i_n_d_m_i_l_l _d_a_t_a _w_i_t_h _d_i_r_e_c_t_i_o_n _i_n_f_o_r_m_a_t_i_o_n _a_n_d _f_o_u_r _r_e_f_e_r_e_n_c_e _s_i_t_e_s

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

     Windspeed data collected at a test site for a windmill, and also
     at four nearby long-term weather site, in Northern South Dakota.  
     Data collected every six hours for all of 2002, except that all of
     the month of May and a few other observations are missing.

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

     data(wm4)

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

     A data frame with 1114 observations on the following 14 variables.

     _D_a_t_e A text variable with values like "2002/1/2/6" meaning the
          reading at 6AM on January 2, 2002

     _C_S_p_d Wind speed (m/s) at candidate site

     _S_p_d_1 Wind speed (m/s) at reference site 1

     _S_p_d_2 Wind speed (m/s) at reference site 2

     _S_p_d_3 Wind speed (m/s) at reference site 3

     _S_p_d_4 Wind speed (m/s) at reference site 4

     _S_p_d_1_L_a_g_1 Lag 1 Wind speed (m/s) at reference site 1

     _S_p_d_2_L_a_g_1 Lag 1 Wind speed (m/s) at reference site 2

     _S_p_d_3_L_a_g_1 Lag 1 Wind speed (m/s) at reference site 3

     _S_p_d_4_L_a_g_1 Lag 1 Wind speed (m/s) at reference site 4

     _S_p_d_1_s_i_n_1 Spd times sin(direction) at site 1

     _S_p_d_1_c_o_s_1 Spd times cos(direction) at site 1

     _b_i_n_1 Wind direction bin for site 1

     _D_i_r_1 Wind direction for site 1, in degrees

_S_o_u_r_c_e:

     Mark Ahlstrom and Rolf Miller, WindLogics, Inc.

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

     Weisberg, S. (2005). _Applied Linear Regression_, 3rd edition. New
     York: Wiley, Section 10.4.1.

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

     data(wm4)

