[ai-geostats] filmatino natalizio

[Duccio Rocchini]

in africa non importa che tu sia leone o gazzella, l'importante è che...

http://www.goodmovielaugh.com/video4.html

a presto, auguri di buone feste e buon anno!

Duccio Rocchini


* By using the ai-geostats mailing list you agree to follow its rules 
( see http://www.ai-geostats.org/help_ai-geostats.htm )

* To unsubscribe to ai-geostats, send the following in the subject or in the 
body (plain text format) of an email message to [EMAIL PROTECTED]

Signoff ai-geostats

[ai-geostats] filmato da non perdere!

[Duccio Rocchini]

ciao a tutti,
http://www.funnymoviesgallerie.com/72364/
guardate quello dei gatti! :-)

:D
Duccio Rocchini


* By using the ai-geostats mailing list you agree to follow its rules 
( see http://www.ai-geostats.org/help_ai-geostats.htm )

* To unsubscribe to ai-geostats, send the following in the subject or in the 
body (plain text format) of an email message to [EMAIL PROTECTED]

Signoff ai-geostats

Re: [ai-geostats] ai

[rocchini]

Right!!
 
I will forward this Gregoire e-mail message to my 
students, who will better understand that using 
user-friendly tools and interfaces and following "blind" analysis ways could 
lead to misleading results.
 
Duccio
 
 
Dr. Duccio RocchiniDipartimento di Scienze 
Ambientali "G. Sarfatti"Università degli Studi di Sienavia P.A. Mattioli 
453100 SienaTel. +39-0577235408Cell. +39-3491425786Fax 
+39-0577232896[EMAIL PROTECTED]www.rocchini.net
 
 
- Original Message - 
From: "Gregoire Dubois" <[EMAIL PROTECTED]>
To: 
Sent: Tuesday, June 07, 2005 10:01 AM
Subject: FW: [ai-geostats] ai
> Quoted from the homepage (see mailing list)> > 
> "AI-GEOSTATS was called after Arc/Info (which explains the strange AI 
in> AI-GEOSTATS), a widely distributed GIS, and geostatistics. The choice 
of> the name is purely historical: as a young Ph.D. student in 
radioecology,> I was looking for information on basic tools developed for 
the> statistical analysis of spatial data and realised not only that 
the> tools proposed in the environmental sciences were elementary, but 
also> that more advanced tools were working like black boxes. Basically, 
most> GIS provided their users with a magic button "create map" and that 
was> all the users asked for at that time, not being aware of the fact 
that> many methods were existing. The question on "what interpolation 
method> between the many available in the literature should I use?" 
became> almost an obsession and I ended up doing a Ph.D. in the field. 
There was> such a high interest about this topic (many Arc/Info users 
were indeed> curious about the strange terms of kriging and variograms) 
that I> created my own "cluster" within ESRI's user group. I was putting 
the> words AI-GEOSTATS in the headers of my mails to attract more 
attention.> Being a bit invasive, I was recommended to start a brand new 
mailing> list. > > > > "> 
> > > Now you know everything :)> > 
Gregoire> > -Original Message-> From: Digby 
Millikan [mailto:[EMAIL PROTECTED] > Sent: 07 June 2005 
07:44> To: ai-geostats> Subject: [ai-geostats] ai> > 
> What does the 'ai' stand for in 'ai-geostats'> > > 
> >



>* By using the ai-geostats mailing list you 
agree to follow its rules > ( see http://www.ai-geostats.org/help_ai-geostats.htm )> > * To unsubscribe to ai-geostats, send the 
following in the subject or in the body (plain text format) of an email message 
to [EMAIL PROTECTED]> > Signoff 
ai-geostats>
* By using the ai-geostats mailing list you agree to follow its rules 
( see http://www.ai-geostats.org/help_ai-geostats.htm )

* To unsubscribe to ai-geostats, send the following in the subject or in the 
body (plain text format) of an email message to [EMAIL PROTECTED]

Signoff ai-geostats

RE: [ai-geostats] spatial logistic regression

[rocchini]

I think you could use Statistica 6.
iF YOU WANT TO CHECK FOR NON-STATIONARITY (LOCAL RATHER THAN GLOBAL
MODELS)YOU COULD SERCH THE NET FOR FOTHERINGHAM'S PROGRAM.
CHEERS
DUCCIO 

I am looking for software to do spatial logistic regression. Anybody has
>any clue which software works the best? Thank you.
>
>Guangqing
>
>

* By using the ai-geostats mailing list you agree to follow its rules 
( see http://www.ai-geostats.org/help_ai-geostats.htm )

* To unsubscribe to ai-geostats, send the following in the subject or in the 
body (plain text format) of an email message to [EMAIL PROTECTED]

Signoff ai-geostats

RE[2]: [ai-geostats] C Tech Offering Tsunami Software Grant Program

[rocchini]

Some months ago,
Isobel Clark proposed a course to the list and a link to a (free!)
copy of her book "PRACTICAL GEOSTATISTIC".
The general rule of ai-geostat list was strictly based on research
interests...
So,
Isobel sent an e-mail to acknowledge her error (?!)
And now.
We allow commercial spots?!?
Cheers
Duccio

Dr. Duccio Rocchini
Dpt. Env. Sci.
University of Siena, Italy

>Reed,
>No one doubts your generosity but all commercial companies are fully aware that
>tragedy (such as the tsunami) or more specifically recovery from tragedy
>is an opportunities for both increased market exposure
>and can be positive marketing experiences. Recovery = $ (just look at Iraq!)
>
>Still not sure that the list server is the appropriate location for adds
>Non the less good on you for having a go.
>
>Cheers
>
>
>At 12:54 PM 19/01/2005 -0800, Reed Copsey wrote:
>>Perry,
>>
>>I'm sorry you question our motives.  We just made the first award, and 
>>without publicising the program, the organizations we want to reach would 
>>never hear about our grant program.
>>
>><http://www.ctech.com/news/tsunami_files/first_grant_awarded.htm>http://www.ctech.com/news/tsunami_files/first_grant_awarded.htm
>>---
>>Reed D. Copsey, President
>>C Tech Development Corporation
>>16091 Santa Barbara Lane
>>Huntington Beach, CA 92649  U.S.A.
>>Phone: 714-840-7444 Fax: 714-844-9255
>>URL: <http://www.ctech.com/>http://www.ctech.com
>>e-mail: [EMAIL PROTECTED]
>>support e-mail: [EMAIL PROTECTED]
>>---
>>Subscribe to the EVS Mailing List at:
>><http://www.ctech.com/company_info/mailing_list_subscription.htm>http://www.ctech.com/company_info/mailing_list_subscription.htm
>>---
>>
>>
>>--
>>From: Perry Collier [mailto:[EMAIL PROTECTED]
>>Sent: Wednesday, January 19, 2005 12:43 PM
>>To: 'Reed Copsey'
>>Cc: ai-geostats@unil.ch
>>Subject: RE: [ai-geostats] C Tech Offering Tsunami Software Grant Program
>>
>>Good on ya Reed D. Copsey, although I question the motive when 
>>companies/corporations advertise their donations to relief funds etc...
>>
>>Perry Collier
>>Qld, Australia
>>-Original Message-
>>From: Reed Copsey [mailto:[EMAIL PROTECTED]
>>Sent: Thursday, 20 January 2005 2:18
>>To: ai-geostats@unil.ch
>>Subject: [ai-geostats] C Tech Offering Tsunami Software Grant Program
>>
>>C Tech Development Corporation, the Worldwide Leader in True 3D Earth 
>>Science Software, Announces a Software Grant Program Valued at Over 
>>$250,000 to Tsunami Stricken Countries.
>>
>>Reed D. Copsey, Sr., C Tech Development Corporation s CEO remarks: Our 
>>software is used throughout the world for analysis and visualization of 
>>complex issues such as water resources, environmental contamination, and 
>>ocean monitoring.  In the wake of the Tsunami, all of us at C Tech want to 
>>ensure that our software is available to researchers assisting the 
>>affected countries.  To that end, we are establishing a grant program to 
>>provide free and reduced cost licenses of our software to organizations 
>>directly working on issues related to this tragedy.   Read full story 
>>at...<http://www.ctech.com/tsunami.htm>http://www.ctech.com/tsunami.htm
>>
>>---
>>Reed D. Copsey, President
>>C Tech Development Corporation
>>16091 Santa Barbara Lane
>>Huntington Beach, CA 92649  U.S.A.
>>Phone: 714-840-7444 Fax: 714-844-9255
>>URL: <http://www.ctech.com/>http://www.ctech.com
>>e-mail: [EMAIL PROTECTED]
>>support e-mail: [EMAIL PROTECTED]
>>---
>>Subscribe to the EVS Mailing List at:
>><http://www.ctech.com/company_info/mailing_list_subscription.htm>http://www.ctech.com/company_info/mailing_list_subscription.htm
>> 
>>
>>---
>>
>>
>>
>>
>>**
>>The information contained in this e-mail is confidential and is
>>intended only for the use of the addressee(s).
>>If you receive this e-mail in error, any use, distribution or
>>copying of this e-mail is not permitted. You are requested to
>>forward unwanted e-mail and address any problems to the
>>

Re: [ai-geostats] questions about ArcView 3.X

[rocchini]

Hi,
as stated by Monica, you can do this:
"Other way to do it is to convert the grid into a 
shape file (usually you loose some detail like that), after you can load the 
geoprocessing Wizard from the Extension option (it is in menu File i 
think ) and do a clip of a shape file after an other shape file 
. "
 
or
 
you could transform your vector data into a 
grid.
Then, from spatial analyst "ANALYSIS" menu 
you must check for properties and then make this grid as 
"mask".
Then you must use Analysis: Map calculator. Choose 
the grid data that you want to clip and click evaluate.
I hope this helps.
Duccio
 
Dr. Duccio RocchiniDipartimento di Scienze 
Ambientali "G. Sarfatti"Università degli Studi di Sienavia P.A. Mattioli 
453100 SienaTel. +39-0577235408Cell. +39-3491425786Fax 
+39-0577232896www.rocchini.net
 
 
- Original Message - 
From: "Monica Palaseanu-Lovejoy" <[EMAIL PROTECTED]>
To: "Adrian Martínez Vargas" <[EMAIL PROTECTED]>; 
<[EMAIL PROTECTED]>
Sent: Tuesday, June 08, 2004 4:08 PM
Subject: Re: [ai-geostats] questions about ArcView 
3.X
> Hi,> > I don't know anything about surfer, but if you 
have an xyz table out > of that file - you can convert it either in dbf 
or txt and ArcView will > import it with "add event theme"> 
> I guess by "limit" you mean "clip" or "cut" a raster with a polygon 
> shape file.> > If you go to www.esri.com and from there you find the Downloads / > scripts - 
you will find for free to download a script done in Avenue > which will 
help you do that - i mean clip a grid with a polygon > shape 
file.> > Other way to do it is to convert the grid into a shape 
file (usually > you loose some detail like that), after you can load the 
> geoprocessing Wizard from the Extension option (it is in menu File 
> i think ) and do a clip of a shape file after an other shape file 
.> > I have no idea what do you mean by "limit triangles by a 
polygon", > so  if you are speaking about TIN files . i guess you 
have to > convert them to grids and do a clip using the script i told you 
before.> > On the ESRI web page you will be able to sign on the 
GIS forum > lists and there you may find easier answers regarding ArcView 
or > any other GIS ESRI software.> > I hope this 
helps,> > Monica> > Manchester University, 
UK> > 



> * By using the ai-geostats mailing list you 
agree to follow its rules > ( see http://www.ai-geostats.org/help_ai-geostats.htm )> > * To unsubscribe to ai-geostats, send the 
following in the subject or in the body (plain text format) of an email message 
to [EMAIL PROTECTED]> > Signoff 
ai-geostats> 
* By using the ai-geostats mailing list you agree to follow its rules 
( see http://www.ai-geostats.org/help_ai-geostats.htm )

* To unsubscribe to ai-geostats, send the following in the subject or in the body 
(plain text format) of an email message to [EMAIL PROTECTED]

Signoff ai-geostats

AI-GEOSTATS: sorry...

[rocchini]

sorry, a "midnight" error!
read who does it and not how does it!

--
* 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 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
* Support to the list is provided at http://www.ai-geostats.org

AI-GEOSTATS: list earthquake!

[rocchini]

When Isobel published her new book on geostatistics, she gave to the
list the internet link of a free copy of the previous version.
How does it? Certainly not a person who aims at money!
Gratefully,
Duccio

--
* 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 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
* Support to the list is provided at http://www.ai-geostats.org

AI-GEOSTATS: bad regression between predicted and measured

[rocchini]

I've made an interpolation by IDW, Spline and ordinary kriging and
a cross-validation for all methods.
When I make a regression between predicted and measured values I reach an R2
of 0.0109 (spline),  0.006 (kriging), 0.0006 (idw), namely very flat curves
(lines).
What could I do? I think I'm using a small number of input values (62) for
the area that I'm considering (4000 km2).
Thanks
Duccio Rocchini

Dr. Duccio Rocchini
Dpt.of Env. Sci.
University of Siena
www.rocchini.net





--
* 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 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
* Support to the list is provided at http://www.ai-geostats.org

Re: AI-GEOSTATS: values normalisation with a lot of zero!

[rocchini]

> I don't understand your point here about the additive
> constant.

I took into account the additive constant "1" because of the unfeasibility
of log(0).
However, this transformation is useless, because it maintains the zero
values!
How could I transform my data to make a normalisation?

Duccio




--
* 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 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
* Support to the list is provided at http://www.ai-geostats.org

AI-GEOSTATS: values normalisation with a lot of zero!

[rocchini]

I would make a regression between water depth (field values) and the
near-infrared band of quickbird satellite. The distribution of water depth
values is not gaussian because of several values equal to zero. I can't make
a transformation by log(x+1) because the result should be the same!!
What could I do?!
Thanks
Duccio Rocchini
[EMAIL PROTECTED]





--
* 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 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
* Support to the list is provided at http://www.ai-geostats.org

Re: AI-GEOSTATS: LAI (leaf area index) fromNDVI

[rocchini]

Sorry,
but I didn't give information about spatial resolutions.
Plots have a dimension of 10*10 meters. The image (Qickbird) has a
resolution of 3 meters.
Now, since I calculated mean NDVI of 3*3 cells, I think that spatial
resolution is
almost the same.
Duccio



--
* 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 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
* Support to the list is provided at http://www.ai-geostats.org

AI-GEOSTATS: LAI (leaf area index) fromNDVI

[rocchini]

I'd like to know if the approach I used to derive LAI from NDVI is correct.
STEP 1: I've got 46 field point values of LAI (leaf area index, namely the
cover of plant leafs)
STEP 2: I derived the NDVI index from a multispectral image.
STEP 3: For every field plot I calculated the mean NDVI of  3x3 neighbour
cells
STEP 4: I made a regression between mean_NDVI and LAI.
STEP 5: r^2 was low (0.34), r being 0.70,  but t, measured as
r/sqr((1-r^2)/(n-2)) was over the minimum t 2.7, being my t 5.75
STEP 6: Since the correlation was highly significant p<0.01 I applied the
equation of the regression line y= 4.9053x + 0.2406 where y was LAI and x
was NDVI to the NDVI map, obtaining the LAI map
STEP 7: I made a control on the accuracy of the model by measuring the mbe
(mean bias error) calculated as the mean of  single errors for every plot
(46 measures): mean of P-O
where P was the estimated LAI value and O the observed, by obtaining  a mbe
of 0.03249587

Questions:
1. Could I apply the equation as in step 6?
2. Could I control my model by using the same input observed values as in
step 7?

Thanks
Duccio




--
* 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 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
* Support to the list is provided at http://www.ai-geostats.org