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1<!doctype html><html lang=en-us><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><link href="data:image/x-icon;base64,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" rel=icon type=image/x-icon><title>Make B/W SVG charts with matplotlib</title><meta name=description content="Install pip requirements."><link rel=alternate type=application/rss+xml title="Mitja Felicijan's posts" href=https://mitjafelicijan.com/index.xml><link rel=alternate type=application/rss+xml title="Mitja Felicijan's notes" href=https://mitjafelicijan.com/notes.xml><style>body{padding:1rem;max-width:760px;background:#fff;font-family:sans-serif;line-height:1.35rem;font-size:16px;margin:0 auto}hr{margin-block-start:1.5rem}h1,h2,h3{line-height:initial}h1{font-size:xx-large}footer{margin-block-start:2rem}cap{text-transform:capitalize}table{max-width:100%;width:100%;border-collapse:separate;border-spacing:2px;border:1px solid #000;border-left:1px solid #999;border-top:1px solid #999}blockquote{font-style:italic}table thead{background:#eee}ul.list li{padding:.2em 0}ul{line-height:1.4em}td,th{border:1px solid #000;padding:4px;border-right:1px solid #999;border-bottom:1px solid #999;text-align:left}pre{text-wrap:nowrap;overflow-x:auto;padding:0 1em;border:1px solid #dcdcdc}code{padding:0 3px;font-size:14px;border:0}pre code{line-height:1.3em}pre,code,pre *,code *{font-family:monospace}figure{margin-inline-start:0;margin-inline-end:0}figcaption{text-align:center}figcaption p{margin:.3em 0 0}img,video,audio{max-width:100%}header{display:flex;flex-direction:row;gap:3rem}nav{display:flex;gap:.75rem}nav.main{flex-grow:1}.pstatus-orange{background:gold}.pstatus-green{background:#9acd32}.pstatus-red{background:#cd5c5c}@media only screen and (max-width:600px){body{padding:15px}header{flex-direction:column;gap:1rem}a{word-wrap:break-word}}</style><header><nav class=main itemscope itemtype=http://schema.org/SiteNavigationElement role=toolbar><a href=/>Home</a>
2<a href=https://git.mitjafelicijan.com/ target=_blank>Git</a>
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7<a href=/index.xml target=_blank>RSS</a></nav></header><main role=main><article itemtype=http://schema.org/Article><h1 itemtype=headline>Make B/W SVG charts with matplotlib</h1><p><cap>note</cap>, Aug 1, 2023 on <a href=https://mitjafelicijan.com>Mitja Felicijan's blog</a><div><p>Install pip requirements.<pre tabindex=0 style=background-color:#fff><code><span style=display:flex><span>pip install matplotlib
8</span></span><span style=display:flex><span>pip install pandas
9</span></span></code></pre><p>Example of data being used.<pre tabindex=0 style=background-color:#fff><code><span style=display:flex><span>Epoch,Connect (NLB),Processing (NLB),Waiting (NLB),Total (NLB),Connect (ALB),Processing (ALB),Waiting (ALB),Total (ALB)
10</span></span><span style=display:flex><span>1,57.7,315.7,309.4,321.6,9,104.4,98.3,105.7
11</span></span><span style=display:flex><span>2,121.9,114.4,100.3,176.9,5.8,99.1,97.1,101.1
12</span></span><span style=display:flex><span>3,5.3,229.4,231.2,231.4,14.2,83,69.4,87.9
13</span></span><span style=display:flex><span>4,4.2,134.5,112.2,135.3,5.3,132.4,105.5,134.1
14</span></span><span style=display:flex><span>5,5.8,247.4,246.8,248.1,6,74.3,70.2,75.5
15</span></span><span style=display:flex><span>6,9.9,122.9,100.6,122.7,7.5,241.1,79.3,242.3
16</span></span><span style=display:flex><span>7,6.1,170.2,106.4,170.5,7.2,382.4,375.1,383.8
17</span></span><span style=display:flex><span>8,6.6,194.3,201.4,195.5,7.1,130.9,104.8,132.6
18</span></span><span style=display:flex><span>9,6.4,146.1,122.3,147.7,9.4,95.6,74,96.4
19</span></span></code></pre><p>In the code you can use <code>df</code> as dataframes and use the headers like <code>df["Epoch"]</code>.
20This is how you get a column data with pandas.<p>The Python code responsible for generating a chart:<pre tabindex=0 style=background-color:#fff><code><span style=display:flex><span><span style=color:#00f>import</span> csv
21</span></span><span style=display:flex><span><span style=color:#00f>import</span> sys
22</span></span><span style=display:flex><span>
23</span></span><span style=display:flex><span><span style=color:#00f>import</span> matplotlib.pyplot <span style=color:#00f>as</span> plt
24</span></span><span style=display:flex><span><span style=color:#00f>import</span> pandas <span style=color:#00f>as</span> pd
25</span></span><span style=display:flex><span>
26</span></span><span style=display:flex><span><span style=color:green># Read the data</span>
27</span></span><span style=display:flex><span>df = pd.read_csv(<span style=color:#a31515>&#34;data.csv&#34;</span>)
28</span></span><span style=display:flex><span>
29</span></span><span style=display:flex><span><span style=color:green># Settings</span>
30</span></span><span style=display:flex><span>plt.title(<span style=color:#a31515>&#34;Connect median NLB vs ALB&#34;</span>)
31</span></span><span style=display:flex><span>plt.tight_layout(pad=2)
32</span></span><span style=display:flex><span>fig = plt.gcf()
33</span></span><span style=display:flex><span>fig.set_size_inches(10, 4)
34</span></span><span style=display:flex><span>
35</span></span><span style=display:flex><span><span style=color:green># Plotting</span>
36</span></span><span style=display:flex><span>plt.plot(df[<span style=color:#a31515>&#34;Epoch&#34;</span>], df[<span style=color:#a31515>&#34;Connect (ALB)&#34;</span>], label = <span style=color:#a31515>&#34;ALB&#34;</span>, color=<span style=color:#a31515>&#34;black&#34;</span>, linestyle=<span style=color:#a31515>&#34;-&#34;</span>)
37</span></span><span style=display:flex><span>plt.plot(df[<span style=color:#a31515>&#34;Epoch&#34;</span>], df[<span style=color:#a31515>&#34;Connect (NLB)&#34;</span>], label = <span style=color:#a31515>&#34;NLB&#34;</span>, color=<span style=color:#a31515>&#34;black&#34;</span>, linestyle=<span style=color:#a31515>&#34;--&#34;</span>)
38</span></span><span style=display:flex><span>
39</span></span><span style=display:flex><span><span style=color:green># Adding x and y axis labels</span>
40</span></span><span style=display:flex><span>plt.xlabel(<span style=color:#a31515>&#34;Epoch&#34;</span>, fontstyle=<span style=color:#a31515>&#34;italic&#34;</span>)
41</span></span><span style=display:flex><span>plt.ylabel(<span style=color:#a31515>&#34;Median value (ms)&#34;</span>, fontstyle=<span style=color:#a31515>&#34;italic&#34;</span>)
42</span></span><span style=display:flex><span>
43</span></span><span style=display:flex><span><span style=color:green># Legend</span>
44</span></span><span style=display:flex><span>legend = plt.legend()
45</span></span><span style=display:flex><span>legend.get_frame().set_linewidth(0)
46</span></span><span style=display:flex><span>
47</span></span><span style=display:flex><span><span style=color:green># Export as SVG</span>
48</span></span><span style=display:flex><span>plt.savefig(<span style=color:#a31515>&#34;plot.svg&#34;</span>, format=<span style=color:#a31515>&#34;svg&#34;</span>)
49</span></span></code></pre><figure><img src=/notes/plot.svg alt="SVG Chart"></figure><p>The image above is SVG and you can zoom in and out and check that the image is vector.</div></div></main><section><hr><h2>Posts from blogs I follow around the net</h2><ul><li><a href=https://chotrin.org/writing/2023-10-20.html target=_blank rel=noopener>OpenBSD upgrade and fall things.</a><div>Been AFK for a bit. It's autumn and I upgraded this server to OpenBSD 7.4! — <a href=https://chotrin.org>chötrin's wiki.</a><li><a href=https://mirzapandzo.com/next-image-url-parameter-is-valid-but-upstream-response-is-invalid target=_blank rel=noopener>Next/Image "url" parameter is valid but upstream response is invalid</a><div>Getting "url" parameter is valid but upstream response is invalid error with Next/Image on WSL2 — <a href=https://mirzapandzo.com/>Mirza Pandzo's Blog</a><li><a href=https://drewdevault.com/2023/10/13/Going-off-script.html target=_blank rel=noopener>Going off-script</a><div>There is a phenomenon in society which I find quite bizarre. Upon our entry to
50this mortal coil, we are endowed with self-awareness, agency, and free will.
51Each of th… — <a href=https://drewdevault.com>Drew DeVault's blog</a><li><a href=https://solar.lowtechmagazine.com/2023/10/workshop-in-rotterdam-how-to-build-a-bike-generator/ target=_blank rel=noopener>Workshop in Rotterdam: How to Build a Bike Generator</a><div>Afbeelding: Low-tech Magazine workshop in Rotterdam, the Netherlands. Poster: Marie Verdeil. Image: Sara Vercauteren
52The workshop takes place on behalf of the “Hou… — <a href=https://solar.lowtechmagazine.com/posts/>LOW←TECH MAGAZINE English</a><li><a href="http://offbeatpursuit.com:80/blog/?id=24" target=_blank rel=noopener>Printf debugging</a><div>tags:
53plan9
54There’s no shame in that. Yes, there is documentation, code to be
55read, and debuggers to be used. But sometimes you just need to “see”
56what is happening.
57So… — <a href=http://offbeatpursuit.com:80/blog/>WLOG - blog</a><li><a href=https://neil.computer/notes/chart-of-accounts-for-startups-and-saas-companies/ target=_blank rel=noopener>Chart of Accounts for Startups and SaaS Companies</a><div>Accounting is fundamental to starting a business. You need to have a basic understanding of accounting principles and essential bookkeeping. I had to learn it. Ther… — <a href=https://neil.computer/>Neil Panchal</a><li><a href=https://journal.valeriansaliou.name/deploy-a-nomad-cluster-on-alpine-linux-with-vultr/ target=_blank rel=noopener>Deploy a Nomad Cluster on Alpine Linux with Vultr</a><div>After spending countless hours trying to understand how to deploy my apps on Kubernetes for the first time to host Mirage, an AI API service that I run, I ended up … — <a href=https://journal.valeriansaliou.name/>Valerian Saliou</a><li><a href=https://jcs.org/2023/10/17/wikipedia target=_blank rel=noopener>Wikipedia Reader 1.0 Released</a><div>Wikipedia Reader
581.0 has been released:
59wikipedia-1.0.sit
60(StuffIt 3 archive, includes
61source code
62and THINK C 5 project file)
63SHA256: 360e12d064f6579695f1e627ce34cb2f0… — <a href=https://jcs.org/>joshua stein</a></ul><p><a href=https://git.sr.ht/~sircmpwn/openring>Generated with openring.</a></section><footer><hr><p><big><strong>Want to comment or have something to add?</strong></big><p>You can write me an email
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