Visualization

[Some example script]

../../_images/tree_example.svg

References

haccytrees.visualization.merger_tree_drawing(trees, progenitor_array, target_idx, *, max_steps=20, mass_threshold=10000000000.0, method='block', padding=0.05, width=1200, height=600, cmap='viridis', coloring='branch', **kwargs)[source]

Visualize the merger-tree as an svg

Parameters:

  • trees (Mapping[str, ndarray]) – the full merger tree forest

  • progenitor_array (ndarray) – the progenitor array returned by haccytrees.read_forest()

  • target_idx (int) – the root index of the halo which is to be visualized

  • max_steps (int) – the number of progenitor steps that are being visualized

  • mass_threshold (float) – all progenitors below this threshold will be skipped

  • method (str) – the drawing method that determines the y-position of each progenitor. See the notes for valid options

  • padding (float) – determines the fraction of padding along the y-axis between neighboring progenitors

  • width (int) – the width of the svg

  • height (int) – the height of the svg

  • cmap (str | Colormap) – the colormap that is used to differentiate the branches

  • coloring (str) – if "branch", will color each branch differently. If None, all branches will be drawn in black

  • kwargs – TODO: add additional arguments

Returns:

drawing – the svg

Return type:

drawsvg.Drawing

Notes

Valid methods are:

  • recursive-center

  • recursive-bottom

  • center

  • block

  • bottom