Denim Umeshkumar Anajwala

No reason except that I typed before I thought.  If the goal is to just get node coordinates, either will work. Exporting nodal data at nodes has the added benefit of obtaining node data as well as node coordinates. When exporting material properties, I export as elements and also save the element coordinate information.

Hey Dwaine,

quick question: Why do you suggest exporting elemental data at nodes, rather than exporting nodal data such has elevations or heads? Any particular reasoning for that?

MapWindows looks interesting. I just had a look at Leszek Pawlowicz's introductory videos at
[url=http://freegeographytools.com/2007/introduction-to-mapwindow-gis-i-shapefile-viewing]http://freegeographytools.com/2007/introduction-to-mapwindow-gis-i-shapefile-viewing[/url]
Pretty cool!

Cheers, Chris

There is a mesh inspector within the mesh geometry editor, but it does not give coodinates  :(  (a new feature to consider?)

If accuracy is not an issue, I usually just zoom way in onto a node and read the coordinates while using the magnifier tool. Otherwise, I usually export the node information by using Flow Materials ... Special ... Save Nodeal Materials as Points. This gets me a list of nude numbers and their coordinates which I can then import into Excel.

For GIS software, we use MapWindow (www.MapWindow.org). It's free.

Dwaine

Good luck with getting [i][b]exact [/b] [/i] flux values out of a FE model .... I'd say that's close to impossible. Try to use the estimates that the Fluid Flux Analyzer gives you. That's likely as good as it gets - unfortunately  :(

Cheers, Chris

The easiest is to export the elevations of slice one (or any nodal data for what it matters) as a shape file and import it to your GIS software. That will give you the exact coordinates (make sure you work in global coordinates!!). I don't think the GUI provides a coordinate inspector :-(

As for excellent and inexpensive GIS software I recommend to take a look at Manifold. It starts at just $245!!! You can find more information at [url=http://www.manifold.net/info/products.shtml]http://www.manifold.net/info/products.shtml[/url]

Cheers, Chris

Hey Chrisoula,

as Eladd already pointed out, in version 5.2 it's a little more complicated.

The traditional way is to define observation points for your model slices (see "Info - Help - Glossary - R - Reference Distributions - Reference Data - Observation single points" for details). FeFlow will write the simulated heads for those observation points to the DAR file. The DAR file is a simple text file and you can find those exported heads at the end of the file. Copy-and-Pasting them to Excel is one option to compare them to your observed values.

All this can be automated using IFM modules, but that requires programming skills. All you need then is an input file with your observation point locations. The IFM module would read that file and write the data plus simulated heads to an output file.

At the FeFlow User Conference in Berlin last year, I gave a presentation about this and attach the paper that came with it for your information.

Good luck, Chris

i wonder what the 'weight' means at
PEST --> observations  --> observations editor.
does it some kind of uncertainty?
i.e. i need to enter weight=1 if i'm 100% sure and weight=.95 if i'm only 95% sure?
for example if i assume head is 25-+1 that means 100%-(1/25)=96% certainty???

i appriciate any answer!
good day,
Elad

This option is only at ver 5.3.
on previous version this is more complicated and involved export to excell

Elad

Hey Chrisoula,

there is a demo video available on WASY's web page:

How to use scatter plots for steady-state calibration?
[url=http://www.wasy.de/english/produkte/feflow/howto/video_calib.htm]http://www.wasy.de/english/produkte/feflow/howto/video_calib.htm[/url]

Check it out  ;)

Also, read "Observation single points" under "Info - Help - Glossary - R - Reference Distributions - Reference Data - Observation single points". It explains how to specify observation points in your model, and references the DAR file format where the output is stored.

Good luck, Chris

to find an element you can go to the mesh generator menu and browse the mesh with the enlarge button.

otherwise, export is to *.shp file and browse it with GIS program.

to define exact element type u can use the built-in option in the generator menu and decide number of elements. for example if you have a 1200m line and you wish a 40m element type 30 (i.e. 1200m divide to 30 elements give 40m to each element).

Elad :)