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-rw-r--r--buch/papers/kugel/figures/tikz/Makefile12
-rw-r--r--buch/papers/kugel/figures/tikz/curvature-1d.dat500
-rw-r--r--buch/papers/kugel/figures/tikz/curvature-1d.pdfbin0 -> 15387 bytes
-rw-r--r--buch/papers/kugel/figures/tikz/curvature-1d.py32
-rw-r--r--buch/papers/kugel/figures/tikz/curvature-1d.tex21
5 files changed, 565 insertions, 0 deletions
diff --git a/buch/papers/kugel/figures/tikz/Makefile b/buch/papers/kugel/figures/tikz/Makefile
new file mode 100644
index 0000000..4ec4e5a
--- /dev/null
+++ b/buch/papers/kugel/figures/tikz/Makefile
@@ -0,0 +1,12 @@
+FIGURES := spherical-coordinates.pdf curvature-1d.pdf
+
+all: $(FIGURES)
+
+%.pdf: %.tex
+ pdflatex $<
+
+curvature-1d.pdf: curvature-1d.tex curvature-1d.dat
+ pdflatex curvature-1d.tex
+
+curvature-1d.dat: curvature-1d.py
+ python3 $<
diff --git a/buch/papers/kugel/figures/tikz/curvature-1d.dat b/buch/papers/kugel/figures/tikz/curvature-1d.dat
new file mode 100644
index 0000000..6622398
--- /dev/null
+++ b/buch/papers/kugel/figures/tikz/curvature-1d.dat
@@ -0,0 +1,500 @@
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diff --git a/buch/papers/kugel/figures/tikz/curvature-1d.pdf b/buch/papers/kugel/figures/tikz/curvature-1d.pdf
new file mode 100644
index 0000000..6425af6
--- /dev/null
+++ b/buch/papers/kugel/figures/tikz/curvature-1d.pdf
Binary files differ
diff --git a/buch/papers/kugel/figures/tikz/curvature-1d.py b/buch/papers/kugel/figures/tikz/curvature-1d.py
new file mode 100644
index 0000000..4710fc8
--- /dev/null
+++ b/buch/papers/kugel/figures/tikz/curvature-1d.py
@@ -0,0 +1,32 @@
+import numpy as np
+import matplotlib.pyplot as plt
+
+
+@np.vectorize
+def fn(x):
+ return (x ** 2) * 2 / 100 + (1 + x / 4) + np.sin(x)
+
+@np.vectorize
+def ddfn(x):
+ return 2 * 5 / 100 - np.sin(x)
+
+x = np.linspace(0, 10, 500)
+y = fn(x)
+ddy = ddfn(x)
+
+cmap = ddy - np.min(ddy)
+cmap = cmap * 1000 / np.max(cmap)
+
+plt.plot(x, y)
+plt.plot(x, ddy)
+# plt.plot(x, cmap)
+
+plt.show()
+
+fname = "curvature-1d.dat"
+np.savetxt(fname, np.array([x, y, cmap]).T, delimiter=" ")
+
+# with open(fname, "w") as f:
+# # f.write("x y cmap\n")
+# for xv, yv, cv in zip(x, y, cmap):
+# f.write(f"{xv} {yv} {cv}\n")
diff --git a/buch/papers/kugel/figures/tikz/curvature-1d.tex b/buch/papers/kugel/figures/tikz/curvature-1d.tex
new file mode 100644
index 0000000..6983fb0
--- /dev/null
+++ b/buch/papers/kugel/figures/tikz/curvature-1d.tex
@@ -0,0 +1,21 @@
+% vim:ts=2 sw=2 et:
+\documentclass[tikz, border=5mm]{standalone}
+\usepackage{pgfplots}
+
+\begin{document}
+\begin{tikzpicture}
+ \begin{axis}[
+ clip = false,
+ width = 8cm, height = 6cm,
+ xtick = \empty, ytick = \empty,
+ colormap name = viridis,
+ axis lines = middle,
+ axis line style = {ultra thick, -latex}
+ ]
+ \addplot+[
+ smooth, mark=none, line width = 3pt, mesh,
+ point meta=explicit,
+ ] file {curvature-1d.dat};
+ \end{axis}
+\end{tikzpicture}
+\end{document}