Trend and plunge of lineation — GMT 6.5.0 documentation

# Trend and plunge of lineation

    # Symbols made for GMT by Jose A. Alvarez-Gomez
    #
    # Geological symbol: lineation
    #
    # The symbol reads the trend and plunge in the 3rd and 4th columns in psxy
    #
    N: 2 ao
    if $1 [> 0:90 then 0.2 -0.2 0.3 $2 l+fHelvetica-Oblique+jCM -W-
    if $1 [> 90:180 then -0.2 -0.2 0.3 $2 l+fHelvetica-Oblique+jCM -W-
    if $1 [> 180:270 then -0.2 0.2 0.3 $2 l+fHelvetica-Oblique+jCM -W-
    if $1 [> 270:360 then 0.2 0.2 0.3 $2 l+fHelvetica-Oblique+jCM -W-
    $1 R
    0 -0.3 M
    0 0.3 D
    0 0.3 0.25 t