candlestick-chart

问题 I'm trying to create a trigger that populates a table everytime X amount of rows are added to other table. The logic would be: 1- check how many rows are in table A based on last date on table B. 2- once there are 1000 rows in table A from the last date on table B, add one row to table B Table A stores ticks from market and table B stores OHLC data (Open, High, Low, Close). Ticks have only 3 columns: date, bid and ask. Open is the first known price, Low is the min price, High is the max price

问题 I'm trying to create a trigger that populates a table everytime X amount of rows are added to other table. The logic would be: 1- check how many rows are in table A based on last date on table B. 2- once there are 1000 rows in table A from the last date on table B, add one row to table B Table A stores ticks from market and table B stores OHLC data (Open, High, Low, Close). Ticks have only 3 columns: date, bid and ask. Open is the first known price, Low is the min price, High is the max price

问题 I am currently trying to do a simple implementation for stock price candle sticks. Let's say we have a stock called XYZ. This stock receives a stream of prices (in no particular frequency), which (for example) looks like: XYZ: [10.2, 10.7, 12, 11 ....]. The objective is to record some metrics for every minute that passes to reflect the state of that stock. A candle stick has metrics like Closing price (last known price within a minute), High Price (maximum price within a minute)...etc. One

问题 I am currently trying to do a simple implementation for stock price candle sticks. Let's say we have a stock called XYZ. This stock receives a stream of prices (in no particular frequency), which (for example) looks like: XYZ: [10.2, 10.7, 12, 11 ....]. The objective is to record some metrics for every minute that passes to reflect the state of that stock. A candle stick has metrics like Closing price (last known price within a minute), High Price (maximum price within a minute)...etc. One

问题 I'm trying to create OHLC bars in postgresql starting from tick data. I want to create bars every 1000 ticks or every 500 ticks. Or every X amount of ticks. The database I'm saving has the bid/ask and a timestamp. I know that I could do a groupby and group them by timestamp, but the desired output is using the amount of ticks. One tick is composed by a timestamp, a bid price and an ask price. The tick database looks something like this: ------------------------------------------------- | date

问题 I want to make a candlestick chart which reads stream of data and then plot it (so it will be plotting either as data comes or after certain period it will update the previous plot). I do not want to use any third party software as Jfree chart want it to be build from javafx directly. Any help will be highly appreciated. Thank you Edit : Can anyone tell me how stage.show() works like which class which method it involke. 回答1: The Ensemble application includes a candlestick chart implementation

问题 I want to make a candlestick chart which reads stream of data and then plot it (so it will be plotting either as data comes or after certain period it will update the previous plot). I do not want to use any third party software as Jfree chart want it to be build from javafx directly. Any help will be highly appreciated. Thank you Edit : Can anyone tell me how stage.show() works like which class which method it involke. 回答1: The Ensemble application includes a candlestick chart implementation

问题 I want to make a candlestick chart which reads stream of data and then plot it (so it will be plotting either as data comes or after certain period it will update the previous plot). I do not want to use any third party software as Jfree chart want it to be build from javafx directly. Any help will be highly appreciated. Thank you Edit : Can anyone tell me how stage.show() works like which class which method it involke. 回答1: The Ensemble application includes a candlestick chart implementation

问题 I am trying to make a simple candlestick ohlc chart with mpl_finance. On their website, it says that the first element in the quotes argument of the candlestick_ohlc method is the dates. It says that they must be formatted in the float date format. When i use date2num however, it gives me an error that says"Cannot convert -100000 to a date. This often happens if non-datetime values are passed to an axis that expects datetime objects." When i use my original list without the date2num method,

问题 I'm trying to add a series (composed of a list of [1,2,0,....]) to a candlestick chart I produced with matplotlib, but cannot work out how to include those labels for each specific candle in the graph. Basically I'd like to produce a chart like this one: (source: linnsoft.com) with the labels with the numbers (my signal series) just over or below each candles. Is there any way I can reach that? Don't know if it helps, but my series are of the pandas DataFrame kind... 回答1: Here's an example