92 lines
1.9 KiB
Org Mode
92 lines
1.9 KiB
Org Mode
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* scr block
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** syntax highlighting
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*** graphviz dot
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#+begin_src dot :file img/src-dot.svg
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digraph G {
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main -> parse -> execute;
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main -> init;
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main -> cleanup;
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execute -> make_string;
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execute -> printf
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init -> make_string;
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main -> printf;
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execute -> compare;
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}
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#+end_src
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#+ATTR_ORG: :width 300
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#+RESULTS:
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[[file:img/src-dot.svg]]
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*** gnuplot
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#+begin_src gnuplot :results silent
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reset
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set title "Putting it All Together"
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set xlabel "X"
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set xrange [-8:8]
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set xtics -8,2,8
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set ylabel "Y"
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set yrange [-20:70]
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set ytics -20,10,70
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f(x) = x**2
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g(x) = x**3
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h(x) = 10*sqrt(abs(x))
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plot f(x) w lp lw 1, g(x) w p lw 2, h(x) w l lw 3
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#+end_src
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#+NAME: tab-gnuplot
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| 3.75 | 2.5 |
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| 4.43 | 3 |
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| 5.5 | 3 |
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| 3.5 | 3.5 |
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#+begin_src gnuplot :var data=tab-gnuplot :exports results :file img/gnuplot-tab.svg
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set terminal svg size 400,320
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plot data u 1 t "unsorted", \
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'' u 2 lt 3 t "sorted"
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#+end_src
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#+RESULTS:
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[[file:img/gnuplot-tab.svg]]
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** custom header
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*** python
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- interactive inside org
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- html export creates a svg file
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- latex export creates a pgf file
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#+HEADER: :var fname=(mpl-var "img/peltier-characteristic")
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#+HEADER: :epilogue (by-backend (html "fig.savefig(fname);print(fname, end='')") (t "plt.show()"))
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#+HEADER: :results (by-backend (html "output file") (t "none"))
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#+begin_src python :exports results
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import numpy as np
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import matplotlib.pyplot as plt
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x = [-4, -3, -2, -1, 0, 1, 2, 3]
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y1 = [-11.2, -11.6, -7.0, 3.2, 18.3, 39.0, 68.2, 125.0]
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y2 = [-8.2, -8.3, -3.9, 7.3, 22.9, 47.3, 87.1, 136.2]
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fig, ax = plt.subplots(1, 1, dpi=100, layout='constrained', figsize=[6.4*1.5/2, 4.8*1.5/2])
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ax.plot(x, y1, '.-', label='15°C')
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ax.plot(x, y2, '.-', label='20°C')
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ax.legend()
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ax.set_xlabel('Electrical current, A')
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ax.set_ylabel('Temperature, °C')
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ax.set_title('Characteristic curve of the peltier element')
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#+end_src
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* latex
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=org-startup-with-latex-preview=
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\(a=5\)
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