Graphviz dot kernel

 cf: https://github.com/laixintao/jupyter-dot-kernel

1. chiao@kpchiao9600k-2204:~$ . .bashrc_anaconda
2. (base) chiao@kpchiao9600k-2204:~$ pip install dot_kernel
   
3. (base) chiao@kpchiao9600k-2204:~$ install-dot-kernel
4. Done.
5. In jupyter lab, open with dot kernel: Launcher -> Dot
6. Edit the dot source in code cell and run.
7. Shift right click mouse on image (Yes! need to press Shift key!). 
8. Select "另存圖片" or "在新分頁中開啟圖片" 

Open in LibreOffice Draw:

1. Export dot as svg, say a.svg by
   dot -Tsvg -o a.svg a.dot
   
2. Insert image a.svg in draw
3. Right click the image, and select 斷開
4. All objects can be edited now
   

init_printing(use_unicode=False, wrap_line=False)

 init_printing(use_unicode=False, wrap_line=False)

Spyder 正體中文

1. Download Chinese po file here: http://here.vixual.net/files/python/spyder/Spyder-v5.4.3-zh_TW-20231113.zip
   
2. Copy add_traditional_Chinese.py (below) and Spyder-v5.4.3-zh_TW-20231113.zip to the user desktop.
3. Run the script add_traditional_Chinese.py (Spyder or Python IDLE).
4. Inside Spyder, Tools -> Preferences -> Application (2nd option on left panel) -> Advanced settings (right panel). Select 正體中文 in Language.
5. Restart Spyder.

Save the following codes to add_traditional_Chinese.py:

# -*- coding: utf-8 -*-

import os
import zipfile

def unzip_and_copy(zip_file, destination):
    # Unzip the file
    with zipfile.ZipFile(zip_file, 'r') as zip_ref:
        zip_ref.extractall(destination)

def edit_base_file(base_file):
    # Read the contents of the base file
    with open(base_file, 'r', encoding='utf-8') as f:
        lines = f.readlines()

    # Find the index where to insert the new line
    insert_index = -1
    for i, line in enumerate(lines):
        if "简体中文" in line:
            insert_index = i + 1
            break

    if insert_index != -1:
        # Insert the new line
        lines.insert(insert_index, "    'zh_TW': u'正體中文',\n")

        # Write the modified content back to the file
        with open(base_file, 'w', encoding='utf-8') as f:
            f.writelines(lines)
        print("File edited successfully.")
    else:
        print("Line containing '简体中文' not found.")

if __name__ == "__main__":
    # Set paths
    desktop_path = os.path.join(os.getenv('USERPROFILE'), 'Desktop')
    zip_file = os.path.join(desktop_path, 'Spyder-v5.4.3-zh_TW-20231113.zip')
    unzip_destination = os.path.join(os.environ['USERPROFILE'], 'anaconda3', 'Lib', 'site-packages', 'spyder', 'locale')
    base_file = os.path.join(os.environ['USERPROFILE'], 'anaconda3', 'Lib', 'site-packages', 'spyder', 'config', 'base.py')

    # Step 1: Unzip and copy files
    unzip_and_copy(zip_file, unzip_destination)

    # Step 2: Edit base.py
    edit_base_file(base_file)

libGL error: MESA-LOADER: failed to open iris

 cf: https://stackoverflow.com/questions/72110384/libgl-error-mesa-loader-failed-to-open-iris

 

$ cd /home/chiao/anaconda3/lib
$ mkdir libstd_orig  # Create a new folder to keep the original libstdc++
$ mv libstd* libstd_orig  # Put all libstdc++ files into the folder, including soft links
$ cp /usr/lib/x86_64-linux-gnu/libstdc++.so.6  ./ # Copy the c++ dynamic link library of the system here
$ ln -s libstdc++.so.6 libstdc++.so
$ ln -s libstdc++.so.6 libstdc++.so.6.0.29

 

Missing figure caption

 While making pdf inside kile for book_chapterxx.tex for my /home/chiao/QuantitativeProgramming/LectureNotes/chapter11/ lecture note. The LaTeX src file exported from Jupyter cannot show the figure title.

 To fix this: comment out (put %) the 36th and 37th lines in book_chapter11.tex, e.g.

 %\DeclareCaptionFormat{nocaption}{}
 %\captionsetup{format=nocaption,aboveskip=0pt,belowskip=0pt}

The figure cation shows up now.

Change section number

 Jupyter change section number (Youtube)

Add utf-8 in case of Chinese cannot be read by Python IDLE

Put the lines at the first:

#!/usr/bin/env python
# coding: utf-8

Disable Spyder help hover

Tools > Preferences > Completion and linting > Introspection

Deactivate the option: "Enable hover hints"

Matplotlib 顯示中文

 cf: https://mathsyouth.github.io/2019/06/12/macos-matplotlib

1. Run shell command:
fc-list :lang=zh
   to find the fonts pathes, e.g. /usr/share/fonts/truetype/bkai00mp.ttf
2. Follow the python codes below:
   import numpy as np
   import matplotlib.pyplot as plt
   from matplotlib import rcParams
   from matplotlib.font_manager import FontProperties
   rcParams['axes.unicode_minus']=False
   myfont_kai=FontProperties(fname='/usr/share/fonts/truetype/bkai00mp.ttf', size=15)
   myfont_ming=FontProperties(fname='/usr/share/fonts/truetype/arphic-bsmi00lp/bsmi00lp.ttf',size=12)
   x=np.linspace(0,2*np.pi,100)
   plt.plot(x,x)
   plt.title("準則", fontproperties=myfont_kai)
   plt.ylabel("隸屬度", fontproperties=myfont_ming)