[Rd] How to do a "Box's M" Test with

[Morkus]

Thanks for the ideas. I'll keep trying...

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> -------- Original Message --------
> Subject: Re: [Rd] How to do a "Box's M" Test with
> Local Time: October 27, 2017 8:50 AM
> UTC Time: October 27, 2017 12:50 PM
> From: murdoch.duncan at gmail.com
> To: Morkus <morkus at protonmail.com>, r-devel at r-project.org <r-devel at r-project.org>
>
> On 27/10/2017 8:10 AM, Morkus via R-devel wrote:
>
>> Trying to get past a frustrating error to do a "simple" Box's M test using Java.
>> The Box's M test says it will work with a data.frame.
>> Here's the setup code:
>> REXP myDf = REXP.createDataFrame(new RList(
>> new REXP[]
>> {
>> new REXPDouble(d1),
>> new REXPDouble(d2),
>> new REXPDouble(d3),
>> new REXPDouble(d4),
>> new REXPInteger(d5)
>> }));
>> Here's the call:
>> REXP boxMResult = rConnection.eval( "boxM(" + myDf+ "[,-5], " + myDf + " [, 5])");
>>
>> I don't really know the R Java interface, but this doesn't make sense.
>> You are pasting an REXP object myDf into a string to evaluate. It would
>> make sense to assign that dataframe object to an R variable, and paste
>> the name of that variable into your expression, or to construct a
>> language object containing the dataframe object, but I don't know how to
>> do those things.
>>
>> Duncan Murdoch
>> But, I keep getting syntax errors.
>> If this code isn't right, how do you build a data.frame R will like? No examples I can find, anywhere.
>> Not sure what to try next. I've tried just sending a string with everything commented, but nothing I've tried works.
>> Can anyone please suggest something to try?
>> Thanks in advance.
>>
>> - M
>>
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