Audio Feature Extraction

https://github.com/tuwien-musicir/rp_extract
https://github.com/tyiannak/pyAudioAnalysis

To read

https://www.maxwell.vrac.puc-rio.br/colecao.php?strSecao=resultado&nrSeq=12140@1
https://www.maxwell.vrac.puc-rio.br/colecao.php?strSecao=resultado&nrSeq=11074@2

Code:

 [3] https://github.com/NCCA/NGL
 https://www.sidefx.com/download/houdini-for-linux/
 [4] SPH/Muller https://github.com/bigthetaio/mueller-sph
       Tutorial https://bigtheta.io/2017/07/08/implementing-sph-in-2d.html
       Dependences: 
       sudo apt install freeglut3-dev
       sudo apt install libeigen3-dev
Surface Reconstruction :
[1] Detail Preserved Surface Reconstruction from
Point Cloud
{2}Deep Level Sets: Implicit Surface Representations for 3D Shape Inference
https://math.berkeley.edu/~sethian/2006/Papers/sethian.annualreview.2003.pdf
https://ascelibrary.org/doi/10.1061/%28ASCE%29SU.1943-5428.0000159
 [3] surface reconstruction from volume fraction https://arxiv.org/pdf/1801.05382.pdf
[4] Level Set methods for fluid interfaces https://www.ljll.math.upmc.fr/~frey/ftp/NM491/11.Sethian%20J.A.,%20Smereka%20P.,%20Level%20set%20methods%20for%20fluid%20interfaces.pdf

Write Scheme
[1] Fluid Simulation on AR https://cgl.ethz.ch/Downloads/Publications/Papers/2019/Tia19a/Tia19a.pdf


Model 3D:
Scene to 3D pose model
https://www.profillic.com/paper/arxiv:1907.11346


Thesis:
 [0]  https://nccastaff.bournemouth.ac.uk/jmacey/MastersProjects/
 [1] Position Based Fluid https://nccastaff.bournemouth.ac.uk/jmacey/MastersProjects/MSc16/09/mpthesis.pdf
 [2] https://nccastaff.bournemouth.ac.uk/jmacey/MastersProjects/MSc18/07/M_Volpicelli_i7630684_MScMajorProject_Report.pdf
 [3] https://nccastaff.bournemouth.ac.uk/jmacey/MastersProjects/MSc16/15/thesis.pdf
 [4] Museth http://www.museth.org/Ken/Publications_files/meis2013_abstract_museth.pdf


Relate Concepts:

https://en.wikipedia.org/wiki/Volume_rendering
https://link.springer.com/chapter/10.1007/978-3-642-76286-4_5#citeas
https://arxiv.org/pdf/1812.04233.pdf
http://pages.mtu.edu/~chaoliw/research/vg05-pmvrt.pdf
http://idav.ucdavis.edu/~okreylos/ResDev/VolVis/index.html
http://faculty.cs.tamu.edu/schaefer/research/wavelet_rasterization.pdf
https://en.wikipedia.org/wiki/Rasterisation
https://en.wikipedia.org/wiki/Voxel
https://en.wikipedia.org/wiki/3D_rendering
https://en.wikipedia.org/wiki/3D_computer_graphics
https://en.wikipedia.org/wiki/Computer_animation

Others

 [2] mapreduce on Python http://hplgit.github.io/map-reduce4sci/doc/pub/MapReduce.html

Python plot maps and polygons

Map Resources:
[1] http://www.arcgis.com/home/item.html?id=3fd6eb2de569477ca83b2b65da8ecb6f

Source for plot:
[1]


Aditional Lectures
[1] http://dan-scientia.blogspot.com/2009/10/centroide-de-um-poligono.html
[2] https://www.matematica.pt/faq/poligono-convexo.php
[3] https://github.com/deparkes/shapely_tests
[4] https://shapely.readthedocs.io/en/stable/manual.html
[5] https://en.wikipedia.org/wiki/Centroid#Centroid_of_polygon
[6] Centro Geodesico https://ww2.ibge.gov.br/home/geociencias/geodesia/artigos/1996_Centro_Geodesico_Centroide.pdf

Visual Center
[1] https://blog.mapbox.com/a-new-algorithm-for-finding-a-visual-center-of-a-polygon-7c77e6492fbc
[2] https://github.com/mapbox/polylabel
[3] Poly Decomp https://mpen.ca/406/motivation

Python basemap
[1] https://matplotlib.org/basemap/users/examples.html
[2] https://github.com/matplotlib/basemap/tree/master/examples

sudo apt-get install libgeos-3.5.0
sudo apt-get install libgeos-dev
sudo pip install https://github.com/matplotlib/basemap/archive/master.zip

Results:

https://github.com/fincahuanaco/covid19peru 

Next Step

https://towardsdatascience.com/easy-steps-to-plot-geographic-data-on-a-map-python-11217859a2db

Fixing geopandas and osmnx problem: Could not find libspatialindex_c library file

For secondary problem trying to resolve (trying to find the library i got):
Traceback (most recent call last):
  File "", line 1, in
NameError: name 'find_library' is not defined
The solution is:

import ctypes
from ctypes.util import find_library

When you install environment and install geopandas, rtree and osmnx

pip install git+git://github.com/geopandas/geopandas.git

pip install rtree

pip install osmnx

No error, everythong aparently is ok, and you try to test

$python

>>> import rtree
Traceback (most recent call last):
 File "", line 1, in
 File "/var/www/sampleapp/crivist/myEnv/lib/python3.5/site-packages/rtree/__init__.py", line 1, in
   from .index import Rtree
 File "/var/www/sampleapp/crivist/myEnv/lib/python3.5/site-packages/rtree/index.py", line 5, in
   from . import core
 File "/var/www/sampleapp/crivist/myEnv/lib/python3.5/site-packages/rtree/core.py", line 125, in
   raise OSError("Could not find libspatialindex_c library file")
OSError: Could not find libspatialindex_c library file

You can solve using:
sudo apt install python3-rtree
But in some servers, you can't access to apt, then you decide do next commands:

$git clone https://github.com/libspatialindex/libspatialindex.git
$cd libspatialindex
$cmake --prefix=/usr .
$make
$sudo make install  #You cannot install on system

CMake Error at src/cmake_install.cmake:52 (file):
  file INSTALL cannot copy file
  "/home/fincahuanaco/Temp/libspatialindex/bin/libspatialindex.so.5.0.0" to
  "/usr/local/lib/libspatialindex.so.5.0.0".
Call Stack (most recent call first):
  cmake_install.cmake:42 (include)

But you compile, then you have the link to file, then set next variable

export SPATIALINDEX_C_LIBRARY=environmentpath/lib/libspatialindex_c.so


Enjoy

References:
[1] geopandas http://geopandas.org/install.html
[2] python environment https://docs.python-guide.org/dev/virtualenvs/
[3] python environment 2 https://docs.python.org/3/tutorial/venv.html

Python 3D Interactive

[1] Python draw 2d and 3d http://jeffskinnerbox.me/notebooks/matplotlib-2d-and-3d-plotting-in-ipython.html

[2] Python 3D picking https://stackoverflow.com/questions/10424517/how-to-get-properties-of-picked-object-in-mplot3d-matplotlib-python

[3] Python mayavi picking http://docs.enthought.com/mayavi/mayavi/auto/example_pick_on_surface.html

[4] Python mayavi for 3D https://docs.enthought.com/mayavi/mayavi/mlab.html

Tensor resources

References:
 [1] Tensor decomposition https://www.slideshare.net/panisson/tensor-decomposition-with-python
 [2] Tensores (sp) http://bibing.us.es/proyectos/abreproy/12082/fichero/Cap%C3%ADtulo3.pdf

python3 using mysql connection

$pip3 install mysql-connector-python --user

from mysql.connector import (connection)


cnx=connection.MySQLConnection(user='user', password='*******',
             host='ip', database='db')

cnx.close()


Resources:
[1] https://dev.mysql.com/doc/connector-python/en/connector-python-installation.html

Python extending functions from C/C++

References
[1] https://docs.python.org/3/library/ctypes.html

https://cython.readthedocs.io/en/latest/src/tutorial/cython_tutorial.html
https://opensourceforu.com/2010/05/extending-python-via-shared-libraries/
https://en.wikibooks.org/wiki/Python_Programming/Extending_with_C%2B%2B

pip3 ImportError: cannot import name 'main'

In linux you need to change the file: /usr/bin/pip3 from:

from pip import main
if __name__ == '__main__':
    sys.exit(main())

to:

from pip import __main__
if __name__ == '__main__':
    sys.exit(__main__._main())