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    :target: ../_downloads/rss.xml
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.. _ap-main-1:

blog page - 2/11
++++++++++++++++

.. blogpostagg::
    :title: Installation of proj
    :date: 2019-09-21
    :keywords: cartopy,proj
    :categories: installation
    :rawfile: 2019/2019-09-21_proj.rst

    This is required for :epkg:`cartopy`,
    `PROJ <https://proj.org/install.html>`_ needs to
    be installed otherwise the following error appears:
    

    ...




.. blogpostagg::
    :title: lighttpd - serve static content - setup
    :date: 2019-09-19
    :keywords: debian,FTP
    :categories: installation
    :rawfile: 2019/2019-09-19_lighttpd.rst

    I had to stop relying on friend to hold the
    content of my website. I wrote earlier a blog on how to
    setup a SFTP server. Let's now see how to set up
    a http server with `lighttpd <https://www.lighttpd.net/>`_.
    I usually avoid using *python* for this even though it is
    sometimes more simple because it is easier to detect
    python processes hanging on. On debian:
    

    ...




.. blogpostagg::
    :title: Installation of pyproj on debian
    :date: 2019-08-25
    :keywords: debian,FTP
    :categories: installation
    :rawfile: 2019/2019-08-25_pyproj.rst

    Everything is here:
    `config.yml <https://github.com/sdpython/ensae_teaching_cs/blob/master/.circleci/config.yml#L60>`_.




.. blogpostagg::
    :title: Install FTP server on debian
    :date: 2019-01-13
    :keywords: debian,FTP
    :categories: FTP
    :rawfile: 2019/2019-01-13_ftp_linux.rst

    Server FTP,
    look into `How to Configure VSFTPD FTPS with SSL/TLS on Ubuntu 18.04 <https://linoxide.com/linux-how-to/configure-vsftpd-sftp-ubuntu/>`_.
    

    ...




.. blogpostagg::
    :title: Install Python 3.7 and many packages on Linux Debian 9
    :date: 2018-12-29
    :keywords: python 3.7,debian
    :categories: python
    :rawfile: 2018/2018-12-29_python37_2.rst

    Same steps four months later:
    :ref:`Install Python 3.7 and many packages on Linux Debian 9 <blog-2018-python37-linux>`.
    

    ...




.. blogpostagg::
    :title: Real time communication
    :date: 2018-12-14
    :keywords: aiortc
    :categories: libraries
    :rawfile: 2018/2018-12-14_aiortc.rst

    I was looking into something to handle real time communication.
    I found this one: `aiortc <https://github.com/jlaine/aiortc>`_
    written in Python and still maintained.




.. blogpostagg::
    :title: Build protobuf and onnx for Windows
    :date: 2018-08-23
    :keywords: protobuf
    :categories: libraries
    :rawfile: 2018/2018-08-23_protobuf.rst

    A good way to build it is to look into the file
    ``appveyor.yml``. You should end up with something
    like this:
    `build_protobuf.bat <https://github.com/sdpython/pymyinstall/blob/master/whl/windows/build_protobuf.bat>`_.
    `onnx <https://github.com/onnx/onnx>`_ was a little bit more complex to build as
    the current build system is based on :epkg:`Miniconda`
    and there is still no version for :epkg:`Python` 3.7.
    I had to start with the standard distribution
    which I did. The release is available as artifacts on
    `appveyor/onnx <https://ci.appveyor.com/project/sdpython/onnx/build/0.3.17/artifacts>`_.
    Instructions can be found in
    `appveyor.yml <https://github.com/sdpython/onnx/blob/master/appveyor.yml>`_.




.. blogpostagg::
    :title: Install Python 3.7 and many packages on Linux Debian 9
    :date: 2018-08-19
    :keywords: python 3.7
    :categories: python
    :rawfile: 2018/2018-08-19_python37.rst

    Below you can find the instruction to get many modules
    on :epkg:`Debian 9` on :epkg:`Python` 3.7.
    The first packages are quite common but the last instructions
    are needed to build all the content for my teachings.
    It begins with:
    

    ...




.. blogpostagg::
    :title: opencv, cannot find DLL
    :date: 2018-07-29
    :keywords: opencv
    :categories: module
    :rawfile: 2018/2018-07-29_opencv.rst

    I recently faced an issue with
    `opencv-python <http://opencv-python-tutroals.readthedocs.io/en/latest/>`_ and
    :epkg:`python` 3.7:
    ``import cv2`` returned the following error:
    

    ...




.. blogpostagg::
    :title: pyecharts + echarts
    :date: 2018-07-05
    :keywords: pyecharts
    :categories: module
    :rawfile: 2018/2018-07-05_pyecharts.rst

    `pyecharts <https://github.com/pyecharts/pyecharts>`_ is a wrapper
    around `echarts <https://ecomfe.github.io/>`_,
    a library developped by
    `Baidu <https://www.baidu.com/>`_.
    Most of the documentation is in Chinese so it handles
    every language.
    Check the `gallery <https://ecomfe.github.io/echarts-examples/public/index.html#chart-type-graph>`_,
    it is quite impressive. One example about is graph shows relationships
    in `Les Miserables <https://ecomfe.github.io/echarts-examples/public/editor.html?c=graph>`_.
    The Python wrapper used som technics such as modules
    to automatically converts python code
    into javascript: `javascripthon <https://github.com/metapensiero/metapensiero.pj>`_.
    I recommend reading the associated paper
    `ECharts: A declarative framework for rapid construction of web-based visualizatio <https://www.sciencedirect.com/science/article/pii/S2468502X18300068>`_
    which mentions many existing libraries and explain their technical choice
    like not using SVG to increase performance
    (so no depndency on `d3.js <https://d3js.org/>`_).





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|rss_image| :ref:`<== <ap-main-0>`  **blog page - 2/11** :ref:`==> <ap-main-2>` :ref:`2019-11 (2) <ap-month-2019-11-0>` :ref:`2019-12 (1) <ap-month-2019-12-0>` :ref:`2020-02 (1) <ap-month-2020-02-0>` :ref:`2020-09 (1) <ap-month-2020-09-0>` :ref:`2021-01 (5) <ap-month-2021-01-0>`