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

Fri, 18 Jun 2004 09:22:14 -0700

I have get the solution exporting the Surfer grid to ASCII x, y, z file. I have eliminate de blanked nodes, and I have:

 

a)      add as table in arcview

b)      add as even theme

c)      with spatial analysis extension active I have convert to a grid.

 

Notes the surfer grid need to have the same dimension in X and Y, and larges decimal places are not recognised for arcview, these cause problems, some nodes can be loosed in the transformation.

 

Note that it is valid for others software useful for grid estimation and processing as GSLIB and ISATIS.

 

Regards Adrian

 

More answers:

----- Original Message -----
Sent: Tuesday, June 08, 2004 9:40 AM
Subject: RE: [ai-geostats] questions about ArcView 3.X

Hi Adrian,

 

The following will probably solve your third problem:

 

Download the free Surfer Extension from this site

http://www.ecogis.de/download_en.html

You’ll need SA thou…

 

I used it once, and it wasn’t too bad J

 

Hope this helps,

 

Johan

 

--------

Johan Reyns

Cartography, Geodesy & GIS

Geography Department - Vakgroep Geografie

Ghent University - Universiteit Gent

 

Krijgslaan 281 (S8 - D 2.54)

B-9000 Gent

Belgium

 

Phone: +32 (0) 9 264 46 98

Fax:     +32 (0) 9 264 49 85

Mail:    [EMAIL PROTECTED]

 

-----Original Message-----
From: Adrian Martínez Vargas [mailto:[EMAIL PROTECTED]]
Sent: dinsdag 8 juni 2004 9:06
To: [EMAIL PROTECTED]
Subject: [ai-geostats] questions about ArcView 3.X

 

Hello list 

 

I have 3 questions about ArcView 3.X

 

a)      How to limit no null data of a grid inside a poligon shape.

b)      How to limit triangles with a poligon

How to convert a  Surfer (from golden software) to an arcview 3.x. ASCII grid format.

 

regards

 

Adrian


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Signoff ai-geostats
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 Rocchini
Dipartimento di Scienze Ambientali "G. Sarfatti"
Università degli Studi di Siena
via P.A. Mattioli 4
53100 Siena
Tel. +39-0577235408
Cell. +39-3491425786
Fax +39-0577232896
www.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]
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> Signoff ai-geostats
>

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Signoff ai-geostats
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

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