Add gallery example showing how to fill the area between two curves#3168
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yvonnefroehlich wants to merge 17 commits intomainfrom
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Add gallery example showing how to fill the area between two curves#3168yvonnefroehlich wants to merge 17 commits intomainfrom
yvonnefroehlich wants to merge 17 commits intomainfrom
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/format |
This was referenced Apr 18, 2024
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Perhaps we should continue this tutorial, considering that it will definitely take some time to implement the |
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Sounds good. But need to finish PR #3169 to add an alias for -M first. |
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seisman
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Apr 10, 2026
Co-authored-by: Dongdong Tian <seisman.info@gmail.com>
seisman
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Apr 10, 2026
Co-authored-by: Dongdong Tian <seisman.info@gmail.com>
yvonnefroehlich
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Apr 10, 2026
Co-authored-by: Dongdong Tian <seisman.info@gmail.com>
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Pull request overview
Adds a new Sphinx-Gallery example demonstrating how to fill the area between two curves using the fill_between alias for GMT’s plot -M option, including variants with curve outlines and comparison against a constant y-level.
Changes:
- Introduce a new gallery example showing
Figure.plot(fill_between=...)with separate fills/legend labels for the two regions. - Add follow-up examples demonstrating drawing both curves and filling relative to a horizontal reference line.
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| """ | |||
| Fill area between curves | |||
| ------------------------ | |||
| possible to fill the area between two curves y1 and y2. Different fills (colors or | ||
| patterns) can be used for the areas y1 > y2 and y1 < y2. Optionally, the curves can | ||
| be drawn. | ||
| To plot an anomaly along a track use :meth:`pygmt.Figure.grdlandmask` and see the |
| # %% | ||
| # Fill the areas between the two curves using the ``fill_between`` parameter. | ||
| # Use the ``fill`` parameter and the modifier **+g** for ``fill_between`` to | ||
| # set different fills for areas with y1 > y2 and y2 < y1, respectively. Use |
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| # %% | ||
| # Additionally to filling the areas, we can draw the curves. Use the ``pen`` |
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| import numpy as np | ||
| import pandas as pd | ||
| import pygmt as gmt | ||
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Description of proposed changes
This PR is converted to draft as a high-level method is planned for fill the area between two curves
-M of
plotallows to fill the area between two curves with colors or patterns. This PR addes a gallery example showing how to do this:Note the discussion regardig using
fill_betweenorbetween_fillatFigure.plot: Add alias "fill_between" for option -M #3169 (comment).
Preview: https://pygmt-dev--3168.org.readthedocs.build/en/3168/gallery/lines/curves_area.html
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