Strike, dip direction and dip of crenulated or undulated beds — GMT 6.5.0 documentation

# Strike, dip direction and dip of crenulated or undulated beds

    # Symbols made for GMT by Jose A. Alvarez-Gomez
    #
    # Geological symbol: Plane of Undulated, crenulated or irregular surface.
    #
    # The symbol reads the strike and dip in the 3rd and 4th columns in psxy
    #
    N: 2 ao
    if $1 [> 0:90 then 0.5 -0.5 0.3 $2 l+fHelvetica-Oblique+jBR -W-
    if $1 [> 90:180 then 0.5 0.5 0.3 $2 l+fHelvetica-Oblique+jTR -W-
    if $1 [> 180:270 then -0.5 0.5 0.3 $2 l+fHelvetica-Oblique+jTL -W-
    if $1 [> 270:360 then -0.5 -0.5 0.3 $2 l+fHelvetica-Oblique+jBL -W-
    $1 R
    0 -0.375 0.125 90 270 m
    0 -0.125 0.125 90 270 m
    0 0.125 0.125 90 270 m
    0 0.375 0.125 90 270 m
    180 R
    0 0.25 0.125 90 270 m
    0 0 0.125 90 270 m
    0 -0.25 0.125 90 270 m
    180 R
    0.1875 0 0.25 -