lines(cmd0::String="", arg1=[]; kwargs...)

Reads (x,y) pairs and plot lines with different levels of decoration. The input can either be a file name of a file with at least two columns (x,y), but optionally more, a GMTdatset object with also two or more columns.

This module plots a large variety of lines and polygons. It goes from simple lines and polygons (color/pattern filled or not) to the so called decorated lines. That is, lines decorated with symbols and text patterns.

This module is a subset of plot to make it simpler to draw line plots. So not all (fine) controlling parameters are not listed here. For the finest control, user should consult the plot module.


  • B or axes or frame
    Set map boundary frame and axes attributes. Default is to draw and annotate left, bottom and vertical axes and just draw left and top axes. More at frame

  • J or proj or projection : – proj=<parameters>
    Select map projection. More at proj

  • R or region or limits : – limits=(xmin, xmax, ymin, ymax) | limits=(BB=(xmin, xmax, ymin, ymax),) | limits=(LLUR=(xmin, xmax, ymin, ymax),units="unit") | ...more
    Specify the region of interest. More at limits. For perspective view view, optionally add zmin,zmax. This option may be used to indicate the range used for the 3-D axes. You may ask for a larger w/e/s/n region to have more room between the image and the axes.

  • G or markerfacecolor or MarkerFaceColor or mc or fill
    Select color or pattern for filling of symbols [Default is no fill]. Note that plot will search for fill and pen settings in all the segment headers (when passing a GMTdaset or file of a multi-segment dataset) and let any values thus found over-ride the command line settings (but those must be provided in the terse GMT syntax). See Setting color for extend color selection (including color map generation).

  • W or pen=pen
    Set pen attributes for the arrow stem [Defaults: width = default, color = black, style = solid]. See Pen attributes

  • U or time_stamp : – time_stamp=true | time_stamp=(just="code", pos=(dx,dy), label="label", com=true)
    Draw GMT time stamp logo on plot. More at timestamp

  • V or verbose : – verbose=true | verbose=level
    Select verbosity level. More at verbose

  • X or xshift or x_offset : xshift=true | xshift=x-shift | xshift=(shift=x-shift, mov="a|c|f|r")
    Shift plot origin. More at xshift

  • Y or yshift or y_offset : yshift=true | yshift=y-shift | yshift=(shift=y-shift, mov="a|c|f|r")
    Shift plot origin. More at yshift

  • figname or savefig or name : – figname=name.png
    Save the figure with the figname=name.ext where ext chooses the figure image format.


Decorated curve with blue stars

using GMT
xy = gmt("gmtmath -T0/180/1 T SIND 4.5 ADD");
lines(xy, axes=:af, pen=(1,:red), decorated=(dist=(2.5,0.25), marker=:star,
      ms=1, pen=(0.5,:green), fill=:blue, dec2=true), aspect="4:2", show=true)