FireFox Custom Installation

This link provides custom installation of FireFox.

Need to install on D drive instead of default C drive; also need to change the profile location.

Otherwise, the FireFox profile still sits inside %appdata%Firefox in C drive

https://support.mozilla.org/en-US/kb/custom-installation-firefox-on-windows

Counting Stock Trend With Numpy Array

Just shot a video to help me memorize how to do trend count with Numpy array:

a = np.array([0,0,0,1,1,1,0,0,1,0,1,1,0])

value_to_count = 1
value_to_reset = 0

no_reset = (a == value_to_count).cumsum()

reset = (a == value_to_reset)

excess = np.maximum.accumulate(no_reset*reset)

result = no_reset - access

Test iOS 11.0.3 Screen Recording On iPhone SE 2017

Test iOS 11.0.3 Screen Recording On iPhone SE 2017

Testing the iOS 11.0.3 update - screen recording feature
Device : iPhone SE (16 GB); Rendering platform: Facebook

Setup steps:
1) General ... Control Center ... add screen recording
2.1) General ... Restrictions ...type code to get in...
2.2) turn 'Screen Recording' to green ...Screen Recording inside 'Game Center'...

Recording Steps: ...starting from the main screen...
1) swipe the phone from the bottom
2) press the button ...screen recording button...
3) When you see flashing red ...see video start of this video..., you're recording
4) Once you finish recording, go back to step1... and press the button to stop

Setup Python 3.6.2 Virtual Environment For Trade + Machine Learning Setup| Windows 10 Sublime Text 3

00：00 - 01：20 | Install Python
01:27 - 02:02 | Install virtualenv to system Python
02:06 - 03:02 | Create virtual environment
03:13 - 03:58 | Download Sublime Text 3
04:02 - 06:28 | Setup Sublime Text 3 Python path
06:29 - 07:31 | Setup Sublime Texxt 3 layout
07:38 - 08:36 | Install Python packages for trade
08:37 - 09:56 | Example reading stock data

Part 1

Part1

In this video
I'll be showing how to setup Python on Windows 10

Look up for the Python installation from your browser
and install the one that fits your system

Here I'm downloading the 64-bit Windows version

Save it to your download folder
and double click to install

Untick things that are not needed
and custom install to the drive you want

Untick the optional features
and set the destination folder

In this case
I'll be installing Python to F drive folder "py362"

Hit "OK" and start installation

You can now remove the Python installer

Now we're going to install virtualenv

Open command prompt

Navigate to the system Python location
which is F:\py362\Scripts

from there
we pip install virtualenv

Hit [Enter]
and wait for the process

you can type pip list to check whether virtualenv is installed to the system

Part 2

We're now creating a folder in F drive to hold our virtual environment

Go to command prompt
Go to F drive and type md space "Trade"
We'll be using this folder to hold our Python trade projects

Part 3

Open a new command prompt

and navigate to our system Python location
which is F:\py362\Scripts

hit [Enter] and install a new virtual environment
to the path
F:\Trade\TradeEnv
then hit [Enter] to start installation

Exit command prompt
and go to the path to see whether the virtual environment is installed

Jump back to browser
and download Sublime Text 3
Click to download the one that fits your system

Once it's downloaded
extract all files
then cut and paste the Sublime Text folder
to your destination folder

Open up the Sublime Text folder
and doubleclick the execute file to start programming

Let's start typing some Python code
Save it as a Python file

Before you run the code
you go to Tools -> Build System and tick Python

But when you hit [Ctrl] [B] to run the code
you get error message

That's why we need to create new build
to point to our virtual environment

From the untitled sublime build file
we need to paste some codes

We can look up for these codes from web

Before we save
we need to change the "python" path
to our virtual environment

I just name it with my environment's name
so that I can easily remember

Go back to your Python file
and tick the Sublime build we've just created
and run the Python code to check if it works

Yeah! It works

Part 4

If you want to move the output panel
from bottom to right

simply hit [Ctrl], [Shift], [P]
and type "install package"

Hit [Ctrl], [Shift], [P] again
and type "install"
Hit it and you'll be able to type "buildview"

click the only selection
and wait for the installation

Now you can hit [Alt] [Shift] [2]
and see a split in between

Simply run the code again
and drag the result panel
to the right

Then you can now see the right side
displays the code result

Now
we're going to pip install several packages for trade

Open command prompt

Navigate to the virtual environment's Scripts folder
pip install pandas
This is a popular package to read and process data

We then pip install xlrd
to let us read and write Excel file with Python

Pip install matplotlib
We use this one to plot graph

We also need beautifulsoup 4 to grab web data

exit command prompt

I'm going to create a new Python file to test these packages
Before saving, make sure you're coding in the virtual environment

Save the file

We're going to read this csv file with Python packages

Let me type and run the code

Ooops I type the wrong file format excel instead of csv

Go back to change to csv in our code
and press [Ctrl] [B] to run it

There we go!

Thanks for watching


Please note that you can also install numpy + mkl, scipy, and sklearn for machine learning

Feel free to discuss trade algo at
www.facebook.com/clueple

Setup Sublime Text 3 To Use Python Virtualenv on Windows

Using Virtualenv in Sublime Text 3 (Windows)

I was just looking for this setup for long.
Finally, found that pointing the path in the Sublime Text 3 build file (video 05:14 - 08:07)
can make it work.

The reason why I setup virtual environment because I need to separate different projects
based on purposes.

In this video, I pip install 2 packages - pandas and xlrd - to my virtual environment "myTradeEnv" to read the stock data from a csv file.

When you're in Sublime Text, type your Python code and save as a new Python file.
Then you go to Tools -> new build system and paste your code there.

Once you save that Sublime Text build file, get back to your Python file
and hit [Ctrl] + [B] (build) to run your code.


00:00 - 01:23 | Download and install Python
01:23 - 03:01| install virtualenv to system
03:19 - 04:09| create virtual environment myTradeEnv
04:22 - 05:11| download sublime text 3
05:14 - 08:07| setup sublime text 3 to run Python virtual environment
08:10 - 11:10 | test running python code in virtual environment to grab stock data from a csv file

Running Python On USB | WinPython

Just tried using Python on USB via WinPython.
It's pretty handy.

Simply double-click the WinPython execute file downloaded from its official website.
And you'll see a zip folder.
Unzip it to wherever you want (in my case, a USB stick).

You're ready to code.

Simply double-click the icon "Spyder" to open up the code editor.

Try Loading Video Source With OpenCV in Python Virtual Environment

I tried out the New Boston's OpenCV script to load up a video source.

I could get the video feed when only loading the webcam but not the capture card being hooked up to my laptop.

I did get the choice to select video source.  But still, couldn't get it worked.

If you know how to grab the video source to play on PC, please let me know.

Many thanks.