import numpy as np
import matplotlib.pyplot as plt


fig = plt.figure(figsize=(4.25,8*.55))
ax = fig.add_axes([0,0,1,1], xlim=[0,11], ylim=[0.5,8.5], frameon=False,
                      xticks=[], yticks=[]) #, aspect=1)

X = np.linspace(1,10,10)
Y = np.zeros(len(X))
y = 8

# Marker edge color
# ----------------------------------------------------------------------------
C = ["C%d" % i for i in range(10)]
plt.scatter(X, y+Y, s=200, facecolor="white", edgecolor=C, linewidth=1.5)
for x,c in zip(X,C):
    plt.text(x, y-0.25, '"%s"' % c,
             size="x-small", ha="center", va="top", family="monospace")
plt.text(X[0]-0.25, y+0.25, "Marker edge color",
         size="small", ha="left", va="baseline")
plt.text(X[-1]+0.25, y+0.25, "mec / ec", color="blue",
         size="small", ha="right", va="baseline", family="monospace")
y -= 1 


# Marker face color
# ----------------------------------------------------------------------------
C = ["C%d" % i for i in range(10)]
plt.scatter(X, y+Y, s=200, facecolor=C, edgecolor="None")
for x,c in zip(X,C):
    plt.text(x, y-0.25, '"%s"' % c,
             size="x-small", ha="center", va="top", family="monospace")
plt.text(X[0]-0.25, y+0.25, "Marker face color",
         size="small", ha="left", va="baseline")
plt.text(X[-1]+0.25, y+0.25, "mfc / fc", color="blue",
         size="small", ha="right", va="baseline", family="monospace")
y -= 1 

# Marker edge width
# ----------------------------------------------------------------------------
LW = (1+np.arange(10)/2)
plt.scatter(X, y+Y, s=100, facecolor="white", edgecolor="black", linewidth=LW)
for x,lw in zip(X,LW):
    plt.text(x, y-0.25,  "%.1f" % lw,
             size="x-small", ha="center", va="top", family="monospace")
plt.text(X[0]-0.25, y+0.25, "Marker edge width",
         size="small", ha="left", va="baseline")
plt.text(X[-1]+0.25, y+0.25, "mew / lw", color="blue",
         size="small", ha="right", va="baseline", family="monospace")
y -= 1 

# Marker edge width
# ----------------------------------------------------------------------------
S = (1+np.arange(10))*25
plt.scatter(X, y+Y, s=S, facecolor="black", edgecolor="None")
for x,s in zip(X,S):
    plt.text(x, y-0.25, '%d' % s,
             size="x-small", ha="center", va="top", family="monospace")
plt.text(X[0]-0.25, y+0.25, "Marker size",
         size="small", ha="left", va="baseline")
plt.text(X[-1]+0.25, y+0.25, "ms / s", color="blue",
         size="small", ha="right", va="baseline", family="monospace")
y -= 1 


X = np.linspace(1,10,12)

# Filled markers
# -----------------------------------------------------------------------------
M = [".", "o", "s", "P", "X", "*", "p", "D", "<", ">", "^", "v"]
for x, marker in zip(X,M):
    plt.scatter(x, y, s=256, color="black", marker="s",fc=".9", ec="none")
    plt.scatter(x, y, s=100, color="black", marker=marker,
                fc="white", ec="black",linewidth=0.75)
    plt.text(x, y-0.25, '"%s"' % marker,
             size="x-small", ha="center", va="top", family="monospace")
plt.text(X[0]-0.25, y+0.25, "Filled markers", size="small", ha="left", va="baseline")
plt.text(X[-1]+0.25, y+0.25, "marker", color="blue",
         size="small", ha="right", va="baseline", family="monospace")
y -= 1

# Unfilled markers
# -----------------------------------------------------------------------------
M = ["1", "2", "3", "4", "+", "x", "|", "_", 4, 5, 6, 7]
for x, marker in zip(X,M):
    if isinstance(marker,str): text = '"%s"' % marker
    else:                      text = '%s' % marker

    plt.scatter(x, y, s=256, color="black", marker="s",fc=".9", ec="none")
    plt.scatter(x, y, s=100, color="black", marker=marker,
                fc="none", ec="black",linewidth=0.75)
    plt.text(x, y-0.25, text,
             size="x-small", ha="center", va="top", family="monospace")
plt.text(X[0]-0.25, y+0.25, "Unfilled markers", size="small", ha="left", va="baseline")
plt.text(X[-1]+0.25, y+0.25, "marker", color="blue",
         size="small", ha="right", va="baseline", family="monospace")
y -= 1

# Unicode markers
# -----------------------------------------------------------------------------
M = ["♠","♣","♥","♦", "→","←","↑","↓", "◐","◑","◒","◓"]
for x, marker in zip(X,M):
    ax.scatter(x, y, s=256, color="black", marker="s",fc=".9", ec="none")
    ax.scatter(x, y, s=100, color="black", marker="$"+marker+"$",
                fc="black", ec="none", linewidth=0.5)
    ax.text(x, y-0.25, '"\$%s\$"' % marker,
             size="x-small", ha="center", va="top", family="monospace")
ax.text(X[0]-0.25, y+0.25, "Unicode markers", size="small", ha="left", va="baseline")
ax.text(X[-1]+0.25, y+0.25, "marker", color="blue",
         size="small", ha="right", va="baseline", family="monospace")
y -= 1

# Spacing
# -----------------------------------------------------------------------------
n_segment = 4
width = 9
segment_width = 0.75*(width/n_segment)
segment_pad = (width - n_segment*segment_width)/(n_segment-1)
X0 =  1+np.arange(n_segment)*(segment_width+segment_pad)
marks = [ 10, [0,-1], (25, 5), [0,25,-1] ]

for x0, mark in zip(X0,marks):
    X = np.linspace(x0, x0+segment_width, 50)
    Y = y*np.ones(len(X))    
    ax.plot(X, Y, linewidth=1, color="black",
            marker=".", mfc="white", mec="black", mew="1", markevery=mark)

    ax.text((X[0]+X[-1])/2, y-0.1, '%s' % str(mark),
            size="x-small", ha="center", va="top")


      
ax.text(1-0.25, y+0.25, "Marker spacing", size="small", ha="left", va="baseline")
ax.text(X[-1]+0.25, y+0.25, "markevery", color="blue",
         size="small", ha="right", va="baseline", family="monospace")


plt.savefig("reference-markers.pdf", dpi=600)
plt.show()