Quantmod包chartSeries函数对部分标的失效问题咨询

Hey there! Let's break down what's going on with your quantmod charting issues and fix them one by one:

• The first error Error in inherits(x, "xts") : object 'BTC' not found happens because you tried to call chartSeries(BTC) without first fetching the BTC data and creating that BTC object in your environment.
• The second error chartSeries requires an xtsible object is because you passed a string ("BTC-EUR") directly to chartSeries—this function needs an xts/zoo object (time-series data), not just a symbol name.
• The CAC index issue is likely the same root cause: wrong symbol or missing data fetch step.

Bitcoin (BTC-EUR) #

You need to first pull the BTC-EUR data from Yahoo Finance, then pass the resulting xts object to chartSeries:

1. Fetch the data with getSymbols (this is how quantmod pulls financial data by default from Yahoo):

   # This will create an object named BTC.EUR (hyphens get converted to dots) in your environment
   getSymbols("BTC-EUR", src = "yahoo")
   

2. Now you can plot it with chartSeries:

   chartSeries(BTC.EUR)
   

   Alternatively, if you want to use BTC as your object name explicitly, use auto.assign = FALSE to assign the data to your own variable:

   BTC <- getSymbols("BTC-EUR", src = "yahoo", auto.assign = FALSE)
   chartSeries(BTC)
   

French CAC Index #

The correct Yahoo Finance symbol for the CAC 40 is FCHI. Follow the same pattern:

1. Fetch the data:

   getSymbols("FCHI", src = "yahoo")
   

2. Plot it:

   chartSeries(FCHI)
   

• Always verify the correct Yahoo Finance symbol for non-US assets/exponents—you can look these up directly on Yahoo Finance's website if you're unsure.
• Use class() to check if your data is in the right format:

  class(BTC.EUR) # Should return "xts" "zoo" if everything worked
  

• If getSymbols fails to fetch data, double-check the symbol and consider specifying the src parameter (though Yahoo is the default, some assets might require other sources, note that Google Finance support is limited now).

内容的提问来源于stack exchange，提问作者responsibleHedger