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import yt
# Load the dataset
ds = yt.load("IsolatedGalaxy/galaxy0030/galaxy0030")
# Create a projection and save it with the default colormap ('cmyt.arbre')
p = yt.ProjectionPlot(ds, "z", ("gas", "density"), width=(100, "kpc"))
p.save()
# Change the colormap to 'cmyt.dusk' and save again. We must specify
# a different filename here or it will save it over the top of
# our first projection.
p.set_cmap(field=("gas", "density"), cmap="cmyt.dusk")
p.save("proj_with_dusk_cmap.png")
# Change the colormap to 'hot' and save again.
p.set_cmap(field=("gas", "density"), cmap="hot")
p.save("proj_with_hot_cmap.png")
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