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xy data from graph plot to excel

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Old   January 27, 2007, 20:43
Default xy data from graph plot to excel
  #1
Radhika
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Hi

I am trying to check whether my model is grid independent. I need to compare the velocity at a particular location in different star cd models with different mesh densities.

1. I tried to specify the coordinates and get the plot along the line joining those points. It returns an empty plot though. Is there a more accurate way to do that? How?

2. I want to know how I can extract xy data from a graph plot (field data) in Star CD to an excel sheet.

Regards

Radhika Gundavelli
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Old   January 29, 2007, 03:40
Default Re: xy data from graph plot to excel
  #2
Kasper Skriver
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Well you can allways try to use sensors at vertices you specify.

You can then scan values (e.i. x y z, u v w, p...). You can also save to a file, for instance *.grf that can be processed in Excel..

Try the help function in star. "help sens" "help gload" "help gval" "help sdat" "help close"

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Old   January 29, 2007, 20:01
Default Re: xy data from graph plot to excel
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Radhika
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Hi..

I tried the sdata command, but the corresponding .grf file is empty. I see the data in the registers when I say post registers from lists in the main menu.

sdata, <filename.grf>, 6, 1, 1, user

Thats the command I typed in. Is there something wrong wih that?

Regards

Radhika Gundavelli
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Old   January 29, 2007, 20:42
Default Re: xy data from graph plot to excel
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Radhika
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Thanks ...I got the .grf file
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Old   January 30, 2007, 19:54
Default Re: xy data from graph plot to excel
  #5
Radhika
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I am still not able to do the second part i.e. extract xy data from a graph plot.

What I am doing right now is...

1. In the Star Guide: Extract/graph data / Field data

data along a line

line defined by endpoints

cursor select two vertices

2. then I load SV in reg 4

3. Distance along a line

4. Create graph...to screen

This displays the graph on the screen.

I need x y data of this graph.

I tried to say create graph ..to file ...but that creates a filename.plot file. which does not seem to be compatible with excel.

Thanks in advance!
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Old   February 23, 2007, 08:23
Default Re: xy data from graph plot to excel
  #6
thomas
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When you have managed to get the graph in star cd, you can use SDATA to print the registers to text files. those you can than import into excel.
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