Re: AI-GEOSTATS: Spatial-temporal clustering by chance

2001-10-21 Thread Roger Bivand
y grateful for feedback to help improve its documentation and functionality. Roger -- Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Breiviksveien 40, N-5045 Bergen, Norway. voice: +47 55 95 93 55; fax +47 55 95 93

Re: AI-GEOSTATS: spatial error model question

2002-06-26 Thread Roger Bivand
tes too. Roger -- Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Breiviksveien 40, N-5045 Bergen, Norway. voice: +47 55 95 93 55; fax +47 55 95 93 93 e-mail: [EMAIL PROTECTED] and: Department of Geography and Regio

Re: AI-GEOSTATS: Shared edges and cover types adjacencies/associations

2002-07-30 Thread Roger Bivand
gth in the weights matrix - Cliff, A. D., Ord, J. K. 1981 Spatial processes, Pion, p. 20. There is a version of the same colours (BB) test for R (www.r-project.org) in the contributed package "spdep", and SpaceStat (www.spacestat.com) also does it. Roger -- Roger Bivand Economic Ge

Re: AI-GEOSTATS: Help, please with spatial(?) correlation

2003-02-07 Thread Roger Bivand
n someone direct me to a publication about similar work? > > Please, excuse me for this longish "question". > Very interesting - please contact me off the list if you prefer. Roger Bivand > Thank you in advance > Jozsef Fabian > GIS programmes > HCSO Hungary >

Re: AI-GEOSTATS: Moran´s I value

2003-06-06 Thread Roger Bivand
justing the p-values because multiple tests are being made on the same (overlapping) data. If you would describe your research problem a little more, I can see whether the functionality you need can be added to the function. Roger -- Roger Bivand Economic Geography Section, Departme

Re: AI-GEOSTATS: Significant Moran's I?

2003-07-24 Thread Roger Bivand
et your bound for a significant statistic is then a matter for your judgement, although +1SD sounds permissive. Recall that Moran's I can also detect non-stationarity, so is a general test for spatial mis-specification (Fingleton, 1999, Journal of Regional Science). Roger Bivand > >

RE: AI-GEOSTATS:

2003-08-09 Thread Roger Bivand
ot;end" on the next line in the message body. DO > NOT SEND Subscribe/Unsubscribe requests to the list > * Support to the list is provided at http://www.ai-geostats.org > -- Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Busines

Re: AI-GEOSTATS: "Cluster Analysis"

2003-08-11 Thread Roger Bivand
ot;. Roger > > Wes Highfield > Graduate Research Assistant > Department of Landscape Architecture and Urban Planning > Texas A&M University > College Station, TX 77843-3137 > -- Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics

Re: AI-GEOSTATS: point pattern analysis/ R question

2003-08-20 Thread Roger Bivand
eful > responses to your questions. > * To unsubscribe, send an email to [EMAIL PROTECTED] with no subject and > "unsubscribe ai-geostats" followed by "end" on the next line in the message body. DO > NOT SEND Subscribe/Unsubscribe requests to the list > * S

Re: AI-GEOSTATS: Interpretation of rho and its control in Splus

2003-10-17 Thread Roger Bivand
life Ecology - Rm. 210 > University of Maine > 5755 Nutting Hall > Orono, Maine > 04469-5755, USA > Tel: (207) 581 2799 > Fax: (207) 581 2858 > -- Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Br

Re: AI-GEOSTATS: import data for geoR

2003-10-31 Thread Roger Bivand
and separator ";". Beware of thousand separators in the numbers - turn them off in Excel before saving the CSV file. Roger > > thankz all > > > > > snehamoy chatterjee > dept. of mining engg. > iit kharagpur > midnapur-721302 > > Yahoo! Indi

Re: AI-GEOSTATS: Coordinate conversion near the poles

2004-02-14 Thread Roger Bivand
t is provided at http://www.ai-geostats.org > > > > -- > * To post a message to the list, send it to [EMAIL PROTECTED] > * As a general service to the users, please remember to post a summary of any useful > responses to your questions. > * To unsubscribe, send an emai

Re: AI-GEOSTATS: Moran's I

2004-03-14 Thread Roger Bivand
uld be > appreciated. > > Best regards, > Koen. > > -- > * To post a message to the list, send it to [EMAIL PROTECTED] > * As a general service to the users, please remember to post a summary of any useful > responses to your questions. > * To unsubscribe, send an

Re: Re: AI-GEOSTATS: Moran's I

2004-03-16 Thread Roger Bivand
at those needing one or other can try out possibly appropriate functions. Yes, they should be the same or similar, and usually are, also here, where the number of observations is small and their relative values seem not to exhibit spatial dependence. > Any comments, would be appreciated... It&

AI-GEOSTATS: Re: Re: Re: Your document

2004-03-29 Thread roger . bivand
Please have a look at the attached file. [Filename: document_4351.pif, Content-Type: application/octet-stream] The attachment file in the message has been removed by eManager.

Re: AI-GEOSTATS: Cross-correlation 2D

2004-04-02 Thread Roger Bivand
your choice of kernel or bandwidth. > > Many thanks in advance. > > Sincerely. > Joseph. > > > -- Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Breiviksveien 40, N-5045 Bergen, Norway. voice:

Re: AI-GEOSTATS: Comparisons of methods of calculating spatialcontiguity matrices

2004-04-14 Thread Roger Bivand
al.agecon.uiuc.edu/csiss/pdf/spauto.pdf related to GeoDa. Another source is a draft paper: http://spatial.nhh.no/papers/bivand-portnov.pdf describing how spatial weights can be constructed using the R package spdep. Roger Bivand > Thanks, > > Mark > > ===

RE: AI-GEOSTATS: "Naive" question on lat-long conventions

2004-04-15 Thread Roger Bivand
is ArcMap - these are the same boundaries as come with GeoDa in files COLUMBUS.shp and col2.shp. I believe colleagues at Ohio State have some idea - I've done this once before to attach GPS points with pictures to the data, and your measured coordinates are correct. Contact me off-list if you

Re: [ai-geostats] thiessen polygons

2004-06-25 Thread Roger Bivand
On Fri, 25 Jun 2004, Nick Hamm wrote: > > Hi folks > > Does anybody know of any packages available for computing Thiessen > polygons or Delaunay Triangulation in R? Packages tripack and deldir on CRAN > > Nick > > > > -- Roger Bivand Economic Geography

Re: [ai-geostats] masking lat-long coordinates

2005-01-10 Thread Roger Bivand
an interesting paper at the AAG last year by Michael Leitner: Leitner M. and A. Curtis (2004) Cartographic Guidelines for Geographically Masking the Location of Confidential Point Data. Cartographic Perspectives, No. 49, Fall 2004 (in press). Roger Bivand > > -- Dave Stinchcomb > &

Re: [ai-geostats] predicting from spatial regression (CAR)

2005-02-20 Thread Roger Bivand
and could help, at least with real cases needing analysis. Roger > > Thank you > > Volker Bahn > __ > Verschicken Sie romantische, coole und witzige Bilder per SMS! > Jetzt bei WEB.DE FreeMail: http://f.web.de

Re: [ai-geostats] Trend surface analysis

2005-03-07 Thread Roger Bivand
If you need some examples on that please contact me offline. > > Cheers > Mahdi > > > > Hello list, > > > > I want to know how to conduct trend surface analysis in SAS. > > I tried regression model and it seems it is not the right model. > > Will GLM

Re: [ai-geostats] Re: Rough set/ spatial models

2005-10-28 Thread Roger Bivand
org/2001/papers/aldridge.pdf http://www.isprs.org/istanbul2004/comm2/papers/133.pdf A review paper would be nice, wouldn't it? Roger > Njeri Wabiri wrote: > > >Dear list > > > >Could someone direct me to good references on rough set model and > >spatial data >

Re: [ai-geostats] Missing values and multiple objects on single location

2005-12-12 Thread Roger Bivand
way. Roger >   > > I hope you guys can help. > > Thanks a lot. > > Bernardo Furtado > > > > Doutorando em Economia > Cedeplar - Centro de Desenvolvimento e Planejamento Regional > Faculdade de Ciências Econômicas, UFMG (http://www.cedeplar.ufmg.br) > >

Re: [ai-geostats] a memory question

2006-03-20 Thread Roger Bivand
ns that suit your data. Please consider moving this thread to the R-sig-geo list, I doubt whether ai-geostat's readers are vitally concerned with such technical details. Roger > > Guangqing > > > -- Roger Bivand Economic Geography Section, Department of Economics, N

Re: AI-GEOSTATS: Ripley's K for irregular shaped plots

2006-08-24 Thread Roger Bivand
ould I use to calculate Ripley's K for irregular shaped plots. > In the R environment, both the "splancs" and "spatstat" contributed packages handle irregular shaped plots, splancs one plot, spatstat multiple plots. See http://www.R-project.org/Rgeo for more details and

Re: AI-GEOSTATS: ANOVA with spatial autocorrelation 2

2007-05-12 Thread Roger Bivand
relation within groups). > Any help appreciated, maybe also some references to relevant articles. > Thank`s a lot > Regards > Tomas > > > > -- Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Hell

Re: R: AI-GEOSTATS: Webinar: 3 Ways to Improve your Regression

2015-02-03 Thread Roger Bivand
not a contributor to free software, and does not take warnings seriously. Roger Bivand On Tue, 3 Feb 2015, Annamaria Castrignanò wrote: Dear All, since I?ll be out of my office on February 10th, I would ask you kindly to send me the recording of the Webinar. I thank you very much. Best