Re: [GRASS-user] Is "i.cluster" an implementation of the ISODATA algorithm?

2013-06-14 Thread Nikos Alexandris
WoW - 1997! Milles mercis!! Will re-check and add maybe more to http://grasswiki.osgeo.org/wiki/User:NikosA/About_Clustering Ich habe aber auch ein Ticket... hmmm, denke ich zumindest... ja: Link added to the trac ticket. Gruss, N On Friday 14 of

Re: [GRASS-user] Is "i.cluster" an implementation of the ISODATA algorithm?

2013-06-14 Thread Markus Neteler
Hi Nikos, On Tue, Oct 30, 2012 at 7:35 AM, Nikos Alexandris wrote: ... > Can someone confirm that i.cluster > is an(other) implementation of the ISODATA clustering algorithm? to prepare my FOSS4G-CEE keynote next week, I was digging in the list archive (starting 1991!)... So just for fun: http:

Re: [GRASS-user] Is "i.cluster" an implementation of the ISODATA algorithm?

2013-02-23 Thread Nikos Alexandris
Nikos Alexandris wrote: > > Ideas for a/the (wiki-page-)title? > > - Clustering based on i.cluster > > - Clustering algorithm in i.cluster > > - Unsupervised clustering based on i.cluster > > - Unsupervised clustering via i.cluster Nikos A: > I still haven't created that page. I will. > There

Re: [GRASS-user] Is "i.cluster" an implementation of the ISODATA algorithm?

2013-02-23 Thread Nikos Alexandris
Nikos Alexandris wrote: .. > Ideas for a/the (wiki-page-)title? > - Clustering based on i.cluster > - Clustering algorithm in i.cluster > - Unsupervised clustering based on i.cluster > - Unsupervised clustering via i.cluster I still haven't created that page. I will. There is, however, a small

Re: [GRASS-user] Is "i.cluster" an implementation of the ISODATA algorithm?

2012-11-06 Thread Nikos Alexandris
Markus Neteler: > > Since this questions comes up from time to time, it would be nice to get > > the summary of this comparative discussion into the Wiki... volunteers > > needed. Nikos: > Already started working it out! If there are no objections, leave it to me. > Please, consider assistance

Re: [GRASS-user] Is "i.cluster" an implementation of the ISODATA algorithm?

2012-11-06 Thread Nikos Alexandris
Angelos Tzotsos : > This is an ISODATA implementation in C, written under GPL by Christos > Iossifidis, a colleague of mine at NTUA. > Would anyone be interested porting it to GRASS? > http://users.ntua.gr/chiossif/Free_As_Freedom_Software/isodata.c Curious: how much effort would this be for an

Re: [GRASS-user] Is "i.cluster" an implementation of the ISODATA algorithm?

2012-10-31 Thread Nikos Alexandris
.. Moritz: > >> I hope I'm being understandable... Nikos Alexandris: > > Absolutely :-). Markus Neteler: > Since this questions comes up from time to time, it would be nice to get > the summary of this comparative discussion into the Wiki... volunteers > needed. Already started working it out

Re: [GRASS-user] Is "i.cluster" an implementation of the ISODATA algorithm?

2012-10-31 Thread Markus Neteler
On Wed, Oct 31, 2012 at 6:06 PM, Nikos Alexandris wrote: > [...] > > Moritz: > >> I hope I'm being understandable... > > Absolutely :-). Since this questions comes up from time to time, it would be nice to get the summary of this comparative discussion into the Wiki... volunteers needed. Markus

Re: [GRASS-user] Is "i.cluster" an implementation of the ISODATA algorithm?

2012-10-31 Thread Nikos Alexandris
[...] Moritz: > I hope I'm being understandable... Absolutely :-). Thank you, Nikos ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user

Re: [GRASS-user] Is "i.cluster" an implementation of the ISODATA algorithm?

2012-10-31 Thread Moritz Lennert
On 31/10/12 00:48, Nikos Alexandris wrote: NikosA: I wonder why the term ISODATA [2] is not to be traced anywhere in the GRASS manuals, nor in the GRASS book (3rd ed.). Can someone confirm that i.cluster is an(other) implementation of the ISODATA clustering algorithm? MarkusN: I search in

Re: [GRASS-user] Is "i.cluster" an implementation of the ISODATA algorithm?

2012-10-31 Thread Nikos Alexandris
Angelos Tzotsos wrote: > Hi all, > This is an ISODATA implementation in C, written under GPL by Christos > Iossifidis, a colleague of mine at NTUA. > Would anyone be interested porting it to GRASS? > http://users.ntua.gr/chiossif/Free_As_Freedom_Software/isodata.c Nice! ... __

Re: [GRASS-user] Is "i.cluster" an implementation of the ISODATA algorithm?

2012-10-31 Thread Angelos Tzotsos
Sorry, I forgot to CC Christos :) On 10/31/2012 11:32 AM, Angelos Tzotsos wrote: Hi all, This is an ISODATA implementation in C, written under GPL by Christos Iossifidis, a colleague of mine at NTUA. Would anyone be interested porting it to GRASS? http://users.ntua.gr/chiossif/Free_As_Freedo

Re: [GRASS-user] Is "i.cluster" an implementation of the ISODATA algorithm?

2012-10-31 Thread Angelos Tzotsos
Hi all, This is an ISODATA implementation in C, written under GPL by Christos Iossifidis, a colleague of mine at NTUA. Would anyone be interested porting it to GRASS? http://users.ntua.gr/chiossif/Free_As_Freedom_Software/isodata.c Cheers, Angelos On 10/31/2012 01:48 AM, Nikos Alexandris wro

Re: [GRASS-user] Is "i.cluster" an implementation of the ISODATA algorithm?

2012-10-30 Thread Nikos Alexandris
NikosA: > >>> I wonder why the term ISODATA [2] is not to be traced anywhere in the > >>> GRASS manuals, nor in the GRASS book (3rd ed.). Can someone confirm > >>> that i.cluster is an(other) implementation of the ISODATA clustering > >>> algorithm? MarkusN: > >> I search in my inbox and found

Re: [GRASS-user] Is "i.cluster" an implementation of the ISODATA algorithm?

2012-10-30 Thread Moritz Lennert
On 30/10/12 10:20, Nikos Alexandris wrote: NikosA: I wonder why the term ISODATA [2] is not to be traced anywhere in the GRASS manuals, nor in the GRASS book (3rd ed.). Can someone confirm that i.cluster is an(other) implementation of the ISODATA clustering algorithm? MarkusN: I search in

Re: [GRASS-user] Is "i.cluster" an implementation of the ISODATA algorithm?

2012-10-30 Thread Nikos Alexandris
NikosA: > > I wonder why the term ISODATA [2] is not to be traced anywhere in the > > GRASS manuals, nor in the GRASS book (3rd ed.). Can someone confirm that > > i.cluster is an(other) implementation of the ISODATA clustering > > algorithm? MarkusN: > I search in my inbox and found some earlie

Re: [GRASS-user] Is "i.cluster" an implementation of the ISODATA algorithm?

2012-10-30 Thread Markus Neteler
Hi Nikos, On Tue, Oct 30, 2012 at 7:35 AM, Nikos Alexandris wrote: ... > I wonder why the term ISODATA [2] is not to be traced anywhere in the GRASS > manuals, nor in the GRASS book (3rd ed.). Can someone confirm that i.cluster > is an(other) implementation of the ISODATA clustering algorithm?

[GRASS-user] Is "i.cluster" an implementation of the ISODATA algorithm?

2012-10-29 Thread Nikos Alexandris
Hi PowerUsers! I am slowly scratching (again) the image classification modules. I've found an interesting lecture presentation, entitled "The application of GIS in formulation and implementation of integrated coastal area management plans in the Guinea current region" by Alberto Altobelli [1]