Re: [Sgems-users] about snesim

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Jing,
Even you are working with a 2D grid, the cell size in the third dimension can NOT be zero. Also please specify "1" for the "min" range in the search template.

Regarding the re-simulation, you can simply use the default value. What this options does is to remove some of simulated nodes from the grid, and re-simulate this nodes to improve the connectivities. The default is NOT to perform re-simulation.

best,
Ivory

I will reinforce this error check in the next release. 

--- On Wed, 7/8/09, Jing Li <ji...@iw...> wrote:

> From: Jing Li <ji...@iw...>
> Subject: RE: [Sgems-users] about snesim
> To: "Ivory" <ust...@ya...>, "Alexandre Boucher" <abo...@st...>
> Cc: "Sge...@li..." <Sge...@li...>
> Date: Wednesday, July 8, 2009, 8:20 AM
> Dear Ivory,
> 
> Thank you very much for the help. I made some progress with
> your instructions. Now al least the program doesn't crash,
> but there are some errors in the parameter settings for the
> range and angles of the search template. You can see from
> the attached parameter file named 'param_snesim_TI' that I
> specified the isotropic condition for the 2d simulation. The
> max and med ranges are specified as 60, while the min range
> is set to 0, since my field is 2d. Could you please tell me
> what is wrong in the settings? 
> 
> I have also attached the project (As you said, I made a
> Cartesian grid 'TIGRID' and copied the simulation property
> from the imported point set file 'TI'). Another question is
> what are the Re-simulation Threshold and Re-simulation
> Iteration #? Is it Ok to use the default settings?
> 
> Thanks a lot,
> 
> Jing
> 
> 
> -----Original Message-----
> From: Ivory [mailto:ust...@ya...]
> 
> Sent: 2009年7月7日 20:18
> To: Alexandre Boucher; Jing Li
> Cc: Sge...@li...
> Subject: RE: [Sgems-users] about snesim
> 
> Jing,
> First, for multiple statistical algorithms like snesim and
> filtersim, the training image must be given in a Cartesian
> grid, not in a point set. In your case, the training image
> is unfortunately given in a point set. (In the next release,
> we will add an error checking for the training image grid
> type).
> 
> Second, snesim algorithm only works with categorical
> variables. For the N categorical variable, the coding must
> be like 0, 1, 2, ..., N-1. But your training image is a
> continuous variable. The current snesim program does check
> for this error.
> 
> Third, your crashing of snesim run might be due to that you
> did not input the "target marginal distribution". I will
> double check the code when I get home.
> 
> Fourth, when you load the TI.txt file, you must choose
> "point set" as the "select object type" in the first
> prompted panel. If you want to create the training image in
> the Cartesian grid from that point set, you can simply
> create a Cartesian grid covering the bounding box of your
> input point set, then copy the property from the point set
> to the Cartesian grid. The attached your training data I
> created in the Cartesian grid.
> 
> Let me know if you have any further questions.
> 
> 
> best,
> Ivory
> 
> 
> 
> --- On Tue, 7/7/09, Jing Li <ji...@iw...>
> wrote:
> 
> > From: Jing Li <ji...@iw...>
> > Subject: RE: [Sgems-users] about snesim
> > To: "Ivory" <ust...@ya...>,
> "Alexandre Boucher" <abo...@st...>
> > Cc: "Sge...@li..."
> <Sge...@li...>
> > Date: Tuesday, July 7, 2009, 11:51 AM
> > Dear Ivory,
> > 
> > Attached are the parameter files and project files for
> a
> > small testing (param_snesim_test; grid; training). But
> I
> > don't think it is the problem of the settings, since
> even if
> > I don't set any parameters for running any other
> algorithms,
> > the program warns me for wrong parameter settings but
> do not
> > close. But every time when I run 'snesim', it doesn't
> warn
> > me about the parameter settings but simply gives the
> error
> > massage for closing.
> > 
> > The file named 'TI.txt' is the real training image
> which I
> > would like to use later on if the algorithm works.
> The
> > resolution is 356 by 356, nodata values are indicated
> by
> > '-999'. After I loaded it, it seems that the program
> cannot
> > display the whole field, but only a small part of it.
> > 
> > Thanks a lot,
> > Jing 
> > 
> > -----Original Message-----
> > From: Ivory [mailto:ust...@ya...]
> > 
> > Sent: 2009年7月7日 17:18
> > To: Alexandre Boucher; Jing Li
> > Cc: Sge...@li...
> > Subject: Re: [Sgems-users] about snesim
> > 
> > 
> > Jing,
> > 
> > Can you send to me your project and the parameter
> files you
> > used for snesim runs?
> > 
> > 
> > 
> > --- On Tue, 7/7/09, Jing Li <ji...@iw...>
> > wrote:
> > 
> > > From: Jing Li <ji...@iw...>
> > > Subject: [Sgems-users] about snesim
> > > To: "Alexandre Boucher" <abo...@st...>
> > > Cc: "Sge...@li..."
> > <Sge...@li...>
> > > Date: Tuesday, July 7, 2009, 7:28 AM
> > > Hello Alex & SGeMS list,
> > > 
> > > I downloaded the S-GeMS 2.1 from http://sourceforge.net/projects/sgems/files/sgems/sgems-2.1_installer.exe

> 
> > 
> > > 
> > > I want use the snesim algorithm to simulate 2d
> fields
> > using
> > > a training image. But the software always gives
> the
> > > following error massage:
> > > 
> > > 'sgems.exe has encountered a problem and needs
> to
> > > close.  We are sorry for the inconvenience.'
> > > 
> > > If I further click the details for more
> informations,
> > it
> > > wrotes:
> > > 
> > > 'AppName: sgems.exe     AppVer:
> > > 0.0.0.0     ModName:
> > > gstlappli_geostat.dll
> > > ModVer: 0.0.0.0     Offset:
> > > 00042b56'
> > > 
> > > It seems that this algorithm doesn't work for
> the
> > > downloaded version. For the other algorithms, it
> gives
> > the
> > > warning massage if I set some parameters wrongly.
> But
> > for
> > > snesim_std, there is no chance to check what is
> wrong
> > in the
> > > settings. It simply asks for closing after I
> click the
> > Run
> > > button. Is it the problem that some library is
> > missing
> > > during installation? But I chose all the options
> > while
> > > installing it.
> > > 
> > > Thank you very much,
> > > 
> > > Jing 
> > > 
> > > 
> > > 
> > > -----Original Message-----
> > > From: Alexandre Boucher [mailto:abo...@st...]
> > > 
> > > Sent: 2009年6月28日 8:55
> > > To: yong he
> > > Cc: Sge...@li...
> > > Subject: Re: [Sgems-users] about sgsim
> > > 
> > > HI Yong,
> > > 
> > > The file is simply a one column file, no header,
> with
> > the
> > > numbers
> > > making up the distribution.  The parameters for
> the
> > > tails control how
> > > fast (or slow) the tail reach the maximum.
> > > 
> > > These are explained in the book:
> > > http://www.amazon.com/Applied-Geostatistics-SGeMS-Users-Guide/dp/0521514142/ref=sr_1_1?ie=UTF8&s=books&qid=1246172066&sr=8-1

> 
> > 
> > > 
> > > Best,
> > > Alex
> > > 
> > > 2009/6/27 yong he <heg...@ya...>:
> > > >
> > > > Hello Alex & SGeMS list,
> > > >
> > > > I am going to use sgsim with my 3-D data.
> The
> > problem
> > > is: when I set the parameters, how can I get the
> "file
> > with
> > > ref. distribution"? In addition, how to set the
> Tail
> > > extrapolation parameters below theref.
> distribution?
> > > >
> > > > Many Thanks!
> > > >
> > > > Yong
> > > >
> > > >
> > > >     
> > >
> >
> ___________________________________________________________
> > > > 
> > >
> 好玩贺卡等你发，邮箱贺卡全新上线！
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> 
> > 
> > > >
> > > >
> > >
> >
> ------------------------------------------------------------------------------
> > > >
> _______________________________________________
> > > > Sgems-users mailing list
> > > > Sge...@li...
> > > > https://lists.sourceforge.net/lists/listinfo/sgems-users

> 
> > 
> > > >
> > > 
> > > 
> > > 
> > > -- 
> > > Alexandre Boucher
> > > Acting Assistant Professor
> > > Dept. of Environmental Earth System Science,
> > > Stanford University
> > > http://geostat.stanford.edu/

> 
> > 
> > > 
> > >
> >
> ------------------------------------------------------------------------------
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> > > Sgems-users mailing list
> > > Sge...@li...
> > > https://lists.sourceforge.net/lists/listinfo/sgems-users

> 
> > 
> > >
> >
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