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Gallery example "Decorated lines": Rotation of symbols ("+apangle") #3016

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Jan 22, 2024
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Gallery example "Decorated lines": Rotation of symbols ("+apangle") #3016

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7e2f0b8
Add rotation of symbol
yvonnefroehlich Jan 19, 2024
0f3e37c
Wrap to 88 characters
yvonnefroehlich Jan 19, 2024
3755736
Merge branch 'main' into add-deco-lines-rotation
yvonnefroehlich Jan 19, 2024
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32 changes: 14 additions & 18 deletions examples/gallery/lines/decorated_lines.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,20 +2,16 @@
Decorated lines
===============

To draw a so-called *decorated line*, i.e., symbols along a line
or curve, use the ``style`` parameter of the
:meth:`pygmt.Figure.plot` method with the argument ``"~"`` and the
desired modifiers. A colon (``":"``) is used to separate the
algorithm settings from the symbol information.
This example shows how to adjust the symbols.
Beside the built-in symbols also custom symbols can be used.
For modifying the main decorated line via the ``pen`` parameter,
see the :doc:`Line styles example </gallery/lines/linestyles>`.
For details on the input data see the upstream GMT documentation
at :gmt-docs:`plot.html#s`.
Furthermore, there are so-called *line fronts*, which are often
used to plot fault lines, subduction zones, or weather fronts;
for details see the
To draw a so-called *decorated line*, i.e., symbols along a line or curve, use the
``style`` parameter of the :meth:`pygmt.Figure.plot` method with the argument ``"~"``
and the desired modifiers. A colon (``":"``) is used to separate the algorithm
settings from the symbol information. This example shows how to adjust the symbols.
Beside the built-in symbols also custom symbols can be used. For modifying the main
decorated line via the ``pen`` parameter, see the
:doc:`Line styles example </gallery/lines/linestyles>`. For details on the input data
see the upstream GMT documentation at :gmt-docs:`plot.html#s`. Furthermore, there are
so-called *line fronts*, which are often used to plot fault lines, subduction zones,
or weather fronts; for details see the
:doc:`Line fronts example </gallery/lines/linefronts>`.
"""

Expand All @@ -32,8 +28,7 @@

# Plot different decorated lines
for decoline in [
# Line with circles ("c") of 0.5 centimeters radius in distance of
# 1 centimeter
# Line with circles ("c") of 0.5 centimeters radius in distance of 1 centimeter
"~d1c:+sc0.5c",
# Adjust thickness, color, and style of the outline via "+p"
# Here, we plot a 1-point thick, blue, dashed outline
Expand All @@ -44,14 +39,15 @@
"~d1c:+sc0.5c+gp8+p1p,blue",
# Line with triangles ("t")
"~d1c:+st0.5c+gtan+p1p,black",
# Rotate counter-clockwise from line-parallel ("+ap") by 30 degrees
"~d1c:+st0.5c+gtan+p1p,black+ap30",
# Line with inverse triangles with a size of 0.3 centimeters in a
# distance of 0.4 centimeters
"~d0.4c:+si0.3c+gtan+p1p,black",
# Line with squares ("s") with a size of 0.7 centimeters in a distance of
# 1 centimeter
"~d1c:+ss0.7c+gtan+p1p,black",
# Shift symbols using "+n" in x and y directions relative to the main
# decorated line
# Shift symbols using "+n" in x and y directions relative to the main decorated line
"~d1c:+sd0.5c+gtan+p1p,black+n-0.2c/0.1c",
# Give the number of equally spaced symbols by using "n" instead of "d"
"~n6:+sn0.5c+gtan+p1p,black",
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