ablines

ablines(a, b; kw...)
or
ablines([a1, a2, ..., an], [b1, b2, ..., bn]; kw...)
or
ablines(D::GMTdataset; kw...)

Creates a straight line(s) defined by Y = a + b * X. Input can be a pair of a,b parameters or a vector of them, case in which multiple straight lines are plotted. Plot limits are passed through the usual region option in kw or, if missing, we plot lines in the x = [0 10] interval. The third form, when input is a GMTdataset.html) type implies that this was computed with the linearfitxy function, which embeds the linear fit parameters in the data type attributes. All plot options are available via the kw arguments.

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](../common_opts/opt_B.html)
J or proj or projection : – proj=
Select map projection. More at [proj](../common_opts/opt_J.html)
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](../common_opts/opt_R.html). 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.
W or pen=pen
Set pen attributes for the arrow stem [Defaults: width = default, color = black, style = solid]. See [Pen attributes](../common_features/pens.html) and [Vector attributes](../common_features/arrows_control.html) for arrow line terminations.
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](../common_opts/opt_U.html)
V or verbose : – verbose=true | verbose=level
Select verbosity level. More at [verbose](../common_opts/opt_V.html)
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](../common_opts/opt_X.html)
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](../common_opts/opt_Y.html)
figname or savefig or name : – figname=name.png
Save the figure with the figname=name.ext where ext chooses the figure image format.

Examples

using GMT

ablines([1, 2, 3], [1, 1.5, 2], linecolor=[:red, :orange, :pink], linestyle=:dash, linewidth=2, show=true)

using GMT

D = linearfitxy([0.0, 0.9, 1.8, 2.6, 3.3, 4.4, 5.2, 6.1, 6.5, 7.4], [5.9, 5.4, 4.4, 4.6, 3.5, 3.7, 2.8, 2.8, 2.4, 1.5],
                 sx = 1 ./ sqrt.([1000., 1000, 500, 800, 200, 80,  60, 20, 1.8, 1]), sy=1 ./
                 sqrt.([1., 1.8, 4, 8, 20, 20, 70, 70, 100, 500]));
plot(D, linefit=true, band_ab=true, band_CI=true, ellipses=true, show=true)

Examples

See Also