Message-ID: <841DBA7E-1E01-4000-89DD-A2D0DFEE07FC@comcast.net>
Date: 2011-08-02T17:29:06Z
From: David Winsemius
Subject: density plot for weighted data
In-Reply-To: <CACqAMD8vN7-4WMU2+_W_2v7R7jfhzthe69n+_4=Fa647fpc-cA@mail.gmail.com>
On Aug 2, 2011, at 1:11 PM, r student wrote:
> Like below?
>
> plot(density(oh$FINCP,weights=oh$PWGTP/sum(oh$PWGTP)))
I don't understand why you are asking for approval. You are the one
with the data and know where they came from. We have none of that
background.
--
David.
> On Tue, Aug 2, 2011 at 10:06 AM, David Winsemius <dwinsemius at comcast.net
> > wrote:
>>
>> On Aug 2, 2011, at 12:51 PM, r student wrote:
>>
>>> I'm trying to create a density plot using census data, where the
>>> weights don't sum to 1.
>>>
>>>
>>>> plot(density(oh$FINCP,weights=oh$PWGTP))
>>>
>>>
>>> Warning message:
>>> In density.default(oh$FINCP, weights = oh$PWGTP) :
>>> sum(weights) != 1 -- will not get true density
>>>
>>>
>>> How would I go about doing this?
>>
>> Wouldn't you just divide by the sum?
>>
>> --
>>
>> David Winsemius, MD
>> West Hartford, CT
>>
>>
David Winsemius, MD
West Hartford, CT