Added colors & legend

Author: rougier

README.md

@@ -1,5 +1,8 @@
-# cheatsheets
-Various cheat sheets for matplotlib
+# Cheatsheets
+
+![](./cheatsheets-1.png)
+
+![](./cheatsheets-2.png)
 
 # How to compile
 
@@ -9,6 +12,7 @@ Various cheat sheets for matplotlib
 * `fonts/source-code-pro/*`  : See https://fonts.google.com/specimen/Source+Code+Pro
 * `fonts/source-sans-pro/*`  : See https://fonts.google.com/specimen/Source+Sans+Pro
 * `fonts/source-serif-pro/*` : See https://fonts.google.com/specimen/Source+Serif+Pro
+* `fonts/delicious-123: See https://www.exljbris.com/delicious.html
 
 2. You need to generate all the figures:
 
@@ -26,3 +30,4 @@ $ xelatex cheatsheet-basic.tex
 
 
 
+

cheatsheets-1.png

@@ -875,9 +875,51 @@
       \colormap{twilight}
     \end{tabular}
   \end{myboxed}
-            
-\end{multicols*}
-  
 
+  \begin{myboxed}{Color names}
+    \includegraphics[width=\columnwidth]{colornames.pdf}
+  \end{myboxed}
+  %
+  \vspace{\fill}
+  %
+  \begin{myboxed}{Legend placement}
+    \includegraphics[width=\columnwidth]{legend-placement.pdf}
+    plt.\textbf{legend}(loc="string", bbox\_to\_anchor=(x,y))\\
+    \begin{tabular}{@{}p{0.33\columnwidth}
+                       p{0.33\columnwidth}
+                       p{0.33\columnwidth}@{}}
+      \scriptsize \rule{0pt}{1.25em}\noindent
+      1: lower left & 2: lower center & 3: lower right\\
+      4: left       & 5: center       & 6: right\\
+      7: upper left & 8: upper center & 9: upper right\\
+    \end{tabular}
+
+    \begin{tabular}{@{}p{0.495\columnwidth}
+                       p{0.495\columnwidth}@{}}
+      \scriptsize \rule{0pt}{1.25em}\noindent
+      A: upper right / (-.1,.9) & B: right / (-.1,.5)\\
+      C: lower right / (-.1,.1) & D: upper left / (-.1,-.1)\\
+      E: upper center / (.5,-.1) & F: upper right / (.9,-.1)\\
+      G: lower left / (1.1,.1) & H: left / (1.1,.5)\\
+      I: upper left / (1.1,.9) & J: lower right / (.9,1.1)\\
+      K: lower center / (.5,1.1) & L: lower left / (.1,1.1)
+    \end{tabular}
+    
+  \end{myboxed}
+  %
+  \vspace{\fill}
+  %
+  \begin{myboxed}{How do I …}
+    \textbf{… resize a figure?}\\
+    \hspace*{2.5mm}~$\rightarrow$ fig.set\_size\_inches(w,h)\\
+    \textbf{… save a figure?}\\
+    \hspace*{2.5mm}~$\rightarrow$ plt.savefig("figure.pdf")\\
+    \textbf{… clear a figure?}\\
+    \hspace*{2.5mm}~$\rightarrow$ ax.clear()\\
+    \textbf{… close all figures?}\\
+    \hspace*{2.5mm}~$\rightarrow$ plt.close("all")
+  \end{myboxed}
+ 
+\end{multicols*}
 \end{document}
 

cheatsheets-2.png

@@ -0,0 +1,57 @@
+"""
+========================
+Visualizing named colors
+========================
+
+Simple plot example with the named colors and its visual representation.
+"""
+from __future__ import division
+
+import matplotlib.pyplot as plt
+from matplotlib import colors as mcolors
+
+
+colors = dict(mcolors.BASE_COLORS, **mcolors.CSS4_COLORS)
+
+# Sort colors by hue, saturation, value and name.
+by_hsv = sorted((tuple(mcolors.rgb_to_hsv(mcolors.to_rgba(color)[:3])), name)
+                for name, color in colors.items())
+sorted_names = [name for hsv, name in by_hsv]
+
+n = len(sorted_names)
+ncols = 3
+nrows = n // ncols + 1
+
+fig, ax = plt.subplots(figsize=(4.5, 6))
+
+# Get height and width
+X, Y = fig.get_dpi() * fig.get_size_inches()
+h = Y / (nrows + 1)
+w = X / ncols
+
+for i, name in enumerate(sorted_names):
+    col = i // nrows
+    row = i % nrows
+    y = Y - (row * h) - h
+
+    xi_line = w * (col + 0.05)
+    xf_line = w * (col + 0.25)
+    xi_text = w * (col + 0.3)
+
+    ax.text(xi_text, y, name, fontsize=7,
+            horizontalalignment='left',
+            verticalalignment='center')
+
+    ax.hlines(y + h * 0.1, xi_line, xf_line,
+              color=colors[name], linewidth=(h * 0.6))
+
+ax.set_xlim(0, X)
+ax.set_ylim(0, Y)
+ax.set_axis_off()
+
+fig.subplots_adjust(left=0, right=1,
+                    top=1, bottom=0,
+                    hspace=0, wspace=0)
+
+plt.savefig("../figures/colornames.pdf")
+# plt.show()

cheatsheet-basic.tex renamed to cheatsheets.tex

@@ -0,0 +1,50 @@
+# -----------------------------------------------------------------------------
+# Matplotlib cheat sheet
+# Released under the BSD License
+# -----------------------------------------------------------------------------
+import numpy as np
+import matplotlib as mpl
+import matplotlib.pyplot as plt
+
+
+fig = plt.figure(figsize=(4,4))
+ax = fig.add_axes([0.15,0.15,.7,.7], frameon=True, aspect=1,
+                  xticks=[], yticks=[])
+
+def text(x, y, _text):
+    color= "C1"
+    if not 0 < x < 1 or not 0 < y < 1:  color = "C0"
+    size = 0.15
+    ax.text(x, y, _text, color="white", #bbox={"color": "C1"},
+            size="xx-large", weight="bold", ha="center", va="center")
+    rect = plt.Rectangle((x-size/2, y-size/2), size, size, facecolor=color,
+                         zorder=-10, clip_on=False)
+    ax.add_patch(rect)
+
+def point(x, y):
+    ax.scatter([x], [y], facecolor="C0", edgecolor="white",
+               zorder=10, clip_on=False)
+
+d = .1
+e = .15/2
+
+text(  d,   d, "1"), text( 0.5,   d, "2"), text(1-d,   d, "3")
+text(  d, 0.5, "4"), text( 0.5, 0.5, "5"), text(1-d, 0.5, "6")
+text(  d, 1-d, "7"), text( 0.5, 1-d, "8"), text(1-d, 1-d, "9")
+
+text( -d, 1-d, "A"), text( -d, 0.5, "B"), text(  -d,   d, "C")
+point(-d+e, 1-d+e), point(-d+e, 0.5), point(-d+e, d-e),
+
+text(  d,  -d, "D"), text(0.5,  -d, "E"), text( 1-d,  -d, "F")
+point(d-e, -d+e), point(0.5, -d+e), point(1-d+e, -d+e),
+
+text(1+d,   d, "G"), text(1+d, 0.5, "H"), text( 1+d, 1-d, "I")
+point(1+d-e, d-e), point(1+d-e, .5), point(1+d-e, 1-d+e),
+
+text(1-d, 1+d, "J"), text(0.5, 1+d, "K"), text(   d, 1+d, "L")
+point(1-d+e, 1+d-e), point(0.5, 1+d-e), point(d-e, 1+d-e),
+
+plt.xlim(0,1), plt.ylim(0,1)
+
+plt.savefig("../figures/legend-placement.pdf")
+# plt.show()