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Added Tabular legend example #2

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Added Tabular legend example #2

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Tejaspatil06 Jun 10, 2024
c69a99e
tabular legend added
Tejaspatil06 Jun 11, 2024
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46 changes: 43 additions & 3 deletions galleries/examples/text_labels_and_annotations/legend_demo.py
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@
import matplotlib.collections as mcol
from matplotlib.legend_handler import HandlerLineCollection, HandlerTuple
from matplotlib.lines import Line2D
from matplotlib.patches import Rectangle

t1 = np.arange(0.0, 2.0, 0.1)
t2 = np.arange(0.0, 2.0, 0.01)
Expand Down Expand Up @@ -96,7 +97,7 @@
# Assign two of the handles to the same legend entry by putting them in a tuple
# and using a generic handler map (which would be used for any additional
# tuples of handles like (p1, p3)).
l = ax1.legend([(p1, p3), p2], ['two keys', 'one key'], scatterpoints=1,
_ = ax1.legend([(p1, p3), p2], ['two keys', 'one key'], scatterpoints=1,
numpoints=1, handler_map={tuple: HandlerTuple(ndivide=None)})

# Second plot: plot two bar charts on top of each other and change the padding
Expand All @@ -109,11 +110,51 @@
rpos = ax2.bar(x_left, y_pos, width=0.5, color='k', label='+1')

# Treat each legend entry differently by using specific `HandlerTuple`s
l = ax2.legend([(rpos, rneg), (rneg, rpos)], ['pad!=0', 'pad=0'],
_ = ax2.legend([(rpos, rneg), (rneg, rpos)], ['pad!=0', 'pad=0'],
handler_map={(rpos, rneg): HandlerTuple(ndivide=None),
(rneg, rpos): HandlerTuple(ndivide=None, pad=0.)})
plt.show()

fig = plt.figure()
ax = fig.add_subplot(111)

# Define the styles and colors
styles = ["--", "--", "--", ".", ".", ".", "^", "^", "^"]
colors = ["r", "g", "b", "r", "g", "b", "r", "g", "b"]

# Use a loop to create the plots
lines = []
for i in range(9):
line, = ax.plot(range(10), np.random.randn(10), colors[i] + styles[i])
lines.append(line)

# create blank rectangle
extra = Rectangle((0, 0), 1, 1, fc="w", fill=False, edgecolor='none', linewidth=0)

# Create organized list containing all handles for table.
# Extra represents empty space
legend_handle = [
extra, extra, extra, extra, extra, lines[0], lines[1], lines[2], extra,
lines[3], lines[4], lines[5], extra, lines[6], lines[7], lines[8]
]

# Define the labels
label_row_1 = [r"$f_{i,j}$", r"$i = 1$", r"$i = 2$", r"$i = 3$"]
label_j_1 = [r"$j = 1$"]
label_j_2 = [r"$j = 2$"]
label_j_3 = [r"$j = 3$"]
label_empty = [""]

# Organize labels for table construction
legend_labels = np.concatenate([
label_row_1, label_j_1, label_empty * 3,
label_j_2, label_empty * 3, label_j_3, label_empty * 3
])

# Create legend
ax.legend(legend_handle, legend_labels, loc=9, ncol=4, shadow=True, handletextpad=-2)

plt.show()
# %%
# Finally, it is also possible to write custom classes that define
# how to stylize legends.
Expand All @@ -125,7 +166,6 @@ class HandlerDashedLines(HandlerLineCollection):
"""
def create_artists(self, legend, orig_handle,
xdescent, ydescent, width, height, fontsize, trans):
# figure out how many lines there are
numlines = len(orig_handle.get_segments())
xdata, xdata_marker = self.get_xdata(legend, xdescent, ydescent,
width, height, fontsize)
Expand Down