[R-sig-Geo] FW: Spatial sampling design using information more than spatial coordinates [SEC=UNCLASSIFIED]

[Jin.Li at ga.gov.au]

Sorry for not ccing to the list!

-----Original Message-----
From: Li Jin 
Sent: Tuesday, 7 April 2015 9:36 AM
To: 'Roger.Bivand at nhh.no'
Subject: RE: [R-sig-Geo] Spatial sampling design using information more than spatial coordinates [SEC=UNCLASSIFIED]

Thanks a lot, Roger! Yes, we have looked at spsurvey and it does not meet the needs of our client. 
Kind regards,
Jin

-----Original Message-----
From: Roger Bivand [mailto:Roger.Bivand at nhh.no]
Sent: Friday, 3 April 2015 2:06 AM
To: Li Jin
Cc: r-sig-geo at r-project.org
Subject: Re: [R-sig-Geo] Spatial sampling design using information more than spatial coordinates [SEC=UNCLASSIFIED]

On Thu, 2 Apr 2015, Jin.Li at ga.gov.au wrote:

> Hi All,
>
> I need to consider both spatial information and another variable (e.g. 
> elevation, soil type) in a sampling design. It seems the available 
> libraries (e.g. sp and spcosa) in R for spatial sampling design are 
> unable to handle it. Please correct me if I am wrong. Before I start 
> to develop my own function for it, I would like to confirm if I have 
> missed some other functions that are available for it in R.  Any 
> suggestions and advice? Thanks in advance!

Have you looked at spsurvey? It may not provide what you need, but checking it would probably help you see whether there is anything meeting your needs. Otherwise you might need to stratify first on your covariates.

Roger

>
> Regards,
> Jin
>
> Jin Li, PhD
> Spatial Modeller/Computational Statistician  |  National Earth and 
> Marine Observations Group Environmental Geoscience Division  | 
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--
Roger Bivand
Department of Economics, Norwegian School of Economics, Helleveien 30, N-5045 Bergen, Norway.
voice: +47 55 95 93 55; fax +47 55 95 91 00
e-mail: Roger.Bivand at nhh.no


Geoscience Australia Disclaimer: This e-mail (and files transmitted with it) is intended only for the person or entity to which it is addressed. If you are not the intended recipient, then you have received this e-mail by mistake and any use, dissemination, forwarding, printing or copying of this e-mail and its file attachments is prohibited. The security of emails transmitted cannot be guaranteed; by forwarding or replying to this email, you acknowledge and accept these risks.