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# Re: [femm] Plot-X-Y with LUA

- To: femm@yahoogroups.com
- Subject: Re: [femm] Plot-X-Y with LUA
- From: "Gregory R. Quinting" <gregq@iei.net>
- Date: Thu, 13 Feb 2003 12:17:12 -0500
- References: <3E4BCDFE.866A2E83@feb.unesp.br>
- User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0.0) Gecko/20020530

`Hi Naasson:`
`Below you'll find an example that might come close to what you're trying to do. It is for generating X-Y data in the case of an axi-symmetric model, but may run with little or no modification in a square planar case. Note that it is for points along a horizontal line. The script can either be run from the post-processor or by another .lua script, which explains the attention paid to the file issues.`
`Take care,`
`Greg`
`---`

    -- x/r field plot lua script
    -- Plots B(real) normal along x/r with y/z at 0 .
    -- GRQ 020717
    --
    -- Units inches.
    exit_at_end=1
    xstart=0 -- starting point on x/r, (y/z fixed at zero)
    xend=1.5 -- ending point
    numpts=255 -- number of points - 1
    smooth("off")
    increment=(xend-xstart)/numpts
    if not(filename) then
    -- filename not set - probably running from within postprocessor already
    -- use a default name and do not exit postprocessor upon exit
    filename="plotfile.txt"
    messagebox("Plot output to file: \n"..filename)
    exit_at_end=nil
    end
    handle=openfile(filename,"w")
    -- messagebox(filename) -- uncomment for debugging
    for x=xstart,xend,increment do

`Are,Aim,B1re,B1im,B2re,B2im,Sig,E,H1re,H1im,H2re,H2im,Jere,Jeim,Jsre,Jsim, Mu1re, Mu1im, Mu2re,Mu2im,Pe,Ph=getpointvalues(x,0)
write(handle,x,'\t',B2re,'\n')
end
closefile(handle)
filename=nil -- (This is this how to "unset" the filename variable.)
if (exit_at_end) then
exitpost()
end`
`Naasson Pereira de Alcantara Jr. wrote:`

> `Hi !`

>     I'm a femm user, but I never tried batch executions with Lua scripting
>     yet. I would like to do this, including to write the data of Plot X-Y to
>     a text file, but I did not find explicit information about this in the
>     femm manual. Could someone help me with this problem ?

> `best regards,`
> `Naasson`
> ``
> ``
> `Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/`
> ``
> ``

``
``

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- References:
  - Plot-X-Y with LUA
    - From: "Naasson Pereira de Alcantara Jr." <naasson@feb.unesp.br>

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