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"""
==============
Plotting a map
==============
How to create a plot of a map.
"""
# sphinx_gallery_thumbnail_number = 2
import matplotlib.pyplot as plt
import astropy.units as u
import sunpy.map
from sunpy.data.sample import AIA_171_IMAGE
###############################################################################
# We start with the sample data.
aiamap = sunpy.map.Map(AIA_171_IMAGE)
##############################################################################
# Let's plot the result. Setting the projection is necessary to ensure that
# pixels can be converted accurately to coordinates values.
plt.figure()
aiamap.plot()
aiamap.draw_limb()
aiamap.draw_grid()
plt.show()
##############################################################################
# The above image looks "dark" because the color scale is accounting for the
# small set of pixels that are extremely bright. We can use the keyword
# ``clip_interval`` to clip out pixels with extreme values. Here, we clip out
# the darkest 1% of pixels and the brightest 0.01% of pixels.
plt.figure()
aiamap.plot(clip_interval=(1, 99.99)*u.percent)
aiamap.draw_limb()
aiamap.draw_grid()
plt.show()
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