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Re: st: Draw an offer curve (supply curve)?
From
"G. Dai" <[email protected]>
To
[email protected]
Subject
Re: st: Draw an offer curve (supply curve)?
Date
Wed, 2 Nov 2011 14:01:05 -0600
Thanks, Brian. It is what I need: efficient and concise.
On Mon, Oct 24, 2011 at 7:07 AM, Brian P. Poi <[email protected]> wrote:
> G. Dai wrote:
>>
>> Dear all,
>> I have a dataset on real offering behavior and I want to draw an
>> offering curve (supply curve) from the data set.
>> One simple example of the data is following:
>>
>> ID Qantity_Offered Price_asked
>>
>> 1 10 99
>> 2 23 90
>> 1 5 50
>> 4 30 32
>> 3 39 10
>> 2 30 0
>> 4 20 0
>> 3 20 0
>>
>> ID is the individual participating in the trade, and quantity_offered
>> is the quantity they can offer at the price of Price_asked.
>> We can see some individuals just ask zero price for some quantities,
>> while ask a higher price for extra quantities. My object is draw an
>> offer curve (supply curve) from the data in an efficient way because
>> the dataset is big.
>>
>> Any suggestion is appreciated.
>> Thanks and have a great weekend!
>
> How about something like this:
>
> . input id q p
> 1 10 99
> 2 23 90
> 1 5 50
> 4 30 32
> 3 39 10
> 2 30 0
> 4 20 0
> 3 20 0
> end
>
> . sort p // put data in ascending price order
> . gen totalq = sum(q) // running sum of total quantity offered
> // for price <= p
> . line p totalq, connect("stairstep")
>
>
> Brian P. Poi
> Senior Economist
> StataCorp LP
>
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