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Knowledge is Power

Author: robin

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Bigdata / Hadoop / Uncategorized

Computing memory parameters for Namenode

Source: https://discuss.pivotal.io/hc/en-us/articles/203272527-Namenode-failed-while-loading-fsimage-with-GC-overhead-limit-exceeded Namenode failed while loading fsimage with GC overhead limit exceeded Problem During startup namenode failed to load fsimage into memory 2014-05-14 17:36:56,806 INFO org.apache.hadoop.hdfs.server.namenode.FSImage: Loading image file /data/hadoop/nn/dfs/name/current/fsimage_0000000000252211550 using no compression 2014-05-14 17:36:56,806 INFO org.apache.hadoop.hdfs.server.namenode.FSImage: Number of files =...

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Uncategorized

stockfetcher.com filters (crappy filters)

Source: http://www.swing-trading-options.com/stockfetcher.html Comments: All the filters are resulting in a crap list Excerpts below… Scans for identifying stocks in a Trend – for finding stocks that you can use to sell credit spreads. To find stocks in a positive trend: –...

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Uncategorized

Stock Indicators, Patterns and Strategies

Technical Indicators and Overlays (stockcharts.com) Technical Indicators are the often squiggly lines found above, below and on-top-of the price information on a technical chart. Indicators that use the same scale as prices are typically plotted on top of the price bars...

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Uncategorized

So Many Stocks – So Little Time

Source: https://www.bivio.com/clubmm/file/Public/So_Many_Stocks_So_Little_Time_Stock_Screening_Handout.pdf Lynn’s Initial Cuts: Finviz for an initial search, based on the criteria below Navellier’s Portfolio Grader to limit my field to stocks with positive big institutional movement BigCharts to compare individual stocks to their industry and the S&P 500...

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Bigdata

Public datasets

Source: https://github.com/caesar0301/awesome-public-datasets Awesome Public Datasets This list of public data sources are collected and tidied from blogs, answers, and user responses. Most of the data sets listed below are free, however, some are not. Other amazingly awesome lists can be found...

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Uncategorized

Indicators cheat sheet

Source: http://www.tradeciety.com/the-ultimate-indicator-cheatsheet/   Related posts: Swing trading resources Indicator Bullshit: Do You Really Think All of the Indicators Will Help You Win? Installing zipline module in pycharm? Stock Indicators, Patterns and Strategies

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Programming

Maintaining database of price file using R

Source: http://www.thertrader.com/2015/12/13/maintaining-a-database-of-price-files-in-r/ Steps Prepare a list of securities (onetime) Setup initial data file (onetime) Update data files (periodic)   1. Prepare a list of securities One time setup. If changed on demand then will have to call initial data setup. File: /Users/rdebnath/robin/ticker_data/r-input/listOfInstruments.R...

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Uncategorized

Swing trading resources

Scan resources Chart resources Indicators Strategies Analysis with R Bullish in last 7 days 6 SIMPLE WAYS TO SCAN FOR SWING TRADING OPPORTUNITIES Swing Trading Stock Screener. How to Scan for Winning Stocks TAZ Traders action zone How to Use...

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Programming

Analyzing top gainer loser data

Housekeeping with mysql Downloading data from wsj using python script here Concatenating daily files # Below command concatenates files and skips the first row of each file $ tail -q -n +2 *.tsv > /tmp/stock_aggr.tsv Creating table in mysql drop...