stock | 易学教程

Log returns of multiple securities for multiple time period in R

阅读更多关于 Log returns of multiple securities for multiple time period in R

问题 I have dataset containing daily closing prices of 5413 companies from 2000 to 2014. I want to calculate daily log returns for the stocks as according to dates as log(Price today/Price yesterday). I illustrate the dataset as follows: Date A G L ABA ABB ABBEY 2000-1-3 NA NA NA NA 2000-1-4 79.5 325 NA 961 2000-1-5 79.5 322.5 NA 945 2000-1-6 79.5 327.5 NA 952 2000-1-7 NA 327.5 NA 941 2000-1-10 79.5 327.5 NA 946 2000-1-11 79.5 327.5 NA 888 How could calculate the the daily log returns and

Hide “out of stock” products with custom meta data In Woocommerce

阅读更多关于 Hide “out of stock” products with custom meta data In Woocommerce

问题 I'm working on a WooCommerce webshop at the moment and I've added a custom meta field named external_stock where WP All Import imports the stock that is available at our supplier for all of our products every 3 hours. The amount of products we've got in our actual store is being entered in the normal stock field. What I'm trying to achieve is that the products from which the normal stock and the external_stock are both 0 are not being displayed in the webshop. I've already edited a plugin in

Equally Weighted Reallocation of Stock Portfolio at Specific Dates According to a Signal

阅读更多关于 Equally Weighted Reallocation of Stock Portfolio at Specific Dates According to a Signal

问题 I want to reallocate a strategy portfolio at specific dates: require(PerformanceAnalytics) require(TTR) require(quantmod) Get asset prices and obtain the daily discrete Returns tickers = c("ABI.BR","AI.PA","AIR.PA","ALV.DE","ASML.AS") getSymbols(tickers, from="2012-01-01", to="2013-12-01") close.prices = do.call(merge, lapply(tickers, function(x) Cl(get(x)))) colnames(close.prices) = c("Anheuser-Busch InBev", "L'Air Liquide","AIRBUS GROUP","Allianz","ASML HLDG") assets.ret = ROC(close.prices

How to play HLS video in Android?

阅读更多关于 How to play HLS video in Android?

问题 Here is stream video from justin.com or twitch.tv this CHANNEL Go to here and choose any live stream, get from them url and add html://.../hls in screen appears Guys told me that: Android is weird in that it will not work on Android Chrome but will work in the stock Android browser (well, previous stock Android browser now that Chrome is the stock browser). It'll also work on all Safari browsers. I've implemented this code stream = (WebView) findViewById(R.id.webView1); stream.getSettings()

mysql best way to manage product sizes

阅读更多关于 mysql best way to manage product sizes

问题 I am developing product database, for sizes i created a separate table PRODUCT_SIZE(id,sizetext) e.g. (1,'Small') ,(2,'Large'), (3,'Extra Large'),... I provided These sizes list as checkbox, when a product is added, all possible sizes can be selected against current product. e.g. for T-Shirt, SMALL, and LARGE sizes selected. these 2 Sized are available against each new stock purchased entry. Now i came to know, that there can be different size units, some items can be in inches, some in kg,

Remove the stock quantity from WooCommerce cart error messages

阅读更多关于 Remove the stock quantity from WooCommerce cart error messages

问题 Iin WooCommerce, I've set woocommerce->settings->products->inventory->stock display format to "Never show quantity remaining in stock" . However if a customer ads a product to the cart, continues to cart or checkout page and enter a value higher than we have in stock they get this error message: Sorry, we do not have enough " {product_name} " in stock to fulfill your order ( {available_stock_amount} in stock). Please edit your cart and try again. We apologize for any inconvenience caused.

How to retrieve BSE/NSE listed stock's price from finance.yahoo.com

阅读更多关于 How to retrieve BSE/NSE listed stock's price from finance.yahoo.com

问题 I'm developing an application for stocks displaying through finance.yahoo.com in Java using Spring framework. But it only provides share values from NYSE, Nasdaq-NM, etc. How can I retrieve the values of share by specify NSE or BSE? 回答1: You can retrieve the components of BSE and NSE with these two links: http://in.finance.yahoo.com/gainers?e=bo and http://in.finance.yahoo.com/losers?e=bo ( Gainers and Losers ). Once you have your full list of stocks, just use your link to retrieve data, for

Equally Weighted Reallocation of Stock Portfolio at Specific Dates According to a Signal

阅读更多关于 Equally Weighted Reallocation of Stock Portfolio at Specific Dates According to a Signal

I want to reallocate a strategy portfolio at specific dates: require(PerformanceAnalytics) require(TTR) require(quantmod) Get asset prices and obtain the daily discrete Returns tickers = c("ABI.BR","AI.PA","AIR.PA","ALV.DE","ASML.AS") getSymbols(tickers, from="2012-01-01", to="2013-12-01") close.prices = do.call(merge, lapply(tickers, function(x) Cl(get(x)))) colnames(close.prices) = c("Anheuser-Busch InBev", "L'Air Liquide","AIRBUS GROUP","Allianz","ASML HLDG") assets.ret = ROC(close.prices,type="discrete")[-1] Now I obtain RSI signals by applying the RSI function to each asset rsi.fct =

mysql best way to manage product sizes

阅读更多关于 mysql best way to manage product sizes

I am developing product database, for sizes i created a separate table PRODUCT_SIZE(id,sizetext) e.g. (1,'Small') ,(2,'Large'), (3,'Extra Large'),... I provided These sizes list as checkbox, when a product is added, all possible sizes can be selected against current product. e.g. for T-Shirt, SMALL, and LARGE sizes selected. these 2 Sized are available against each new stock purchased entry. Now i came to know, that there can be different size units, some items can be in inches, some in kg, and some in meters. I have a altered solution in mind: to alter table PRODUCT_SIZE(id,sizetext, UNitType

How to play HLS video in Android?

阅读更多关于 How to play HLS video in Android?

Here is stream video from justin.com or twitch.tv this CHANNEL Go to here and choose any live stream, get from them url and add html://.../hls in screen appears Guys told me that: Android is weird in that it will not work on Android Chrome but will work in the stock Android browser (well, previous stock Android browser now that Chrome is the stock browser). It'll also work on all Safari browsers. I've implemented this code stream = (WebView) findViewById(R.id.webView1); stream.getSettings().setJavaScriptEnabled(true); stream.getSettings().setPluginsEnabled(true); stream.setBackgroundColor