[R-SIG-Finance] But in quantmod function

[Noah Silverman]

Josh,

Responding in order of your comments:

1) Typo.  The symbol is "^XSP".  Regardless, it fails for options on any 
index.

2) I wasn't using a rude tone.  I am extremely appreciative and grateful 
for all the wonderful R people, code, and community.  I read through the 
code, tried a few things, and suggested a fix to the list.  Don't see 
how that's rude in any way.

3) I'm new to R, so don't know the proper protocol (or even how/where) 
to submit a patch.  That's why I asked the list.  Happy to contribute 
where I'm able, but need to know the proper way.

Thanks,

-N

On 11/15/10 8:05 PM, Joshua Ulrich wrote:
> Noah,
>
> On Mon, Nov 15, 2010 at 9:38 PM, Noah Silverman<noah at smartmediacorp.com>  wrote:
>> OK,
>>
>> Bad example.  But try it for the ticker "^RUT"  (Russel index)
>>
>> There ARE options:  http://finance.yahoo.com/q/op?s=^RUT+Options
>>
>> Also options for the S&P mini "^XAP"
>> http://finance.yahoo.com/q/op?s=^XSP+Options
>>
> Which is it "^XAP" or "^XSP"?
>
>> getOptionChain("^XSP", NULL)
>> Error in from:to : NA/NaN argument
>>
>> I'VE FOUND THE BUG.  But don't know how/where to submit it.
>>
>> Look carefully at the URLs used by yahoo.
>>
>> For a stock
>>
>> For an index
>>
> Submit bugs to the package maintainer, preferably with patches.  Using
> a rude tone doesn't improve the chances of someone helping you.
> Especially when *both* the software and the data are free.
>
>> Notice that with an index, the "+options" part is there.  Try calling the
>> page without it and it fails.  The current code in quantmod doesn't add
>> this.
>>
>> I think we just need add one line:      Symbols<- paste(Symbols,
>> "+options", sep="")
>>
> Why don't you try this, test it, and submit a patch?
>
>> -N
>>
>>
> --
> Joshua Ulrich  |  FOSS Trading: www.fosstrading.com
>
>
>>
>>
>> On 11/15/10 7:03 PM, Cedrick Johnson wrote:
>>> There are technically SPX cash optns. I am not in front of my comp to look
>>> them up but they do exist indeed. SPY and DIA options do exist for the
>>> ETF's....
>>>
>>> -c
>>> Sent from my BlackBerry®
>>>
>>> -----Original Message-----
>>> From: Marc Delvaux<mdelvaux at gmail.com>
>>> Sender: r-sig-finance-bounces at stat.math.ethz.ch
>>> Date: Mon, 15 Nov 2010 18:49:35
>>> To: Noah Silverman<noah at smartmediacorp.com>
>>> Reply-To: mdelvaux at gmail.com
>>> Cc:<r-sig-finance at stat.math.ethz.ch>
>>> Subject: Re: [R-SIG-Finance] But in quantmod function
>>>
>>> That is because there are no options on these specific tickers, as you can
>>> see by the grayed out "options" link on the corresponding yahoo page.
>>>
>>> For options on the S&P, you need to use "SPY", and "^DJX" for the DJIA.
>>>
>>> On Mon, Nov 15, 2010 at 5:06 PM, Noah
>>> Silverman<noah at smartmediacorp.com>wrote:
>>>
>>>> Hi,
>>>>
>>>> I think I've found a bug in the quantmod library.
>>>>
>>>> The function "getOptionChain" fails when fetching the chain of an index
>>>> (S&P, DJIA, etc.)
>>>> (Note:  It works beautifully for options on stocks.)
>>>>
>>>> chain<- getOptionChain("^GSPC", Exp=NULL)
>>>> Error in strsplit(opt, "<tr.*?>")[[1]] : subscript out of bounds
>>>>
>>>> chain<- getOptionChain("^RUT", Exp=NULL)
>>>> Error in from:to : NA/NaN argument
>>>>
>>>>
>>>> Any ideas?
>>>>
>>>> -N
>>>>
>>>> _______________________________________________
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>>>
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