Create automatically multiple port

Hello,

I am looking to simulate a long line of antenna and I need approximately to have 100 ports and each port is associated with a source

I found a solution to have directly 100 wires, I create the first one and after I use the command to copy and translate.

Is it possible to do the same things for the port ? because for the moment the only way I found is very long, I create each port and after I click on the geometry to associate the port and the wire

regards

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Feko

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JIF

Hello nico7,

There is no easy way to do this in the GUI at the moment. However, this is a great example for scripting and should be very easy to do. I would suggest that you have a look at the material in the User manual and the Example guide regarding scripting in CADFEKO. You only need a basic understanding of scripting to do what you want, since you can script record the actions (perform actions in the GUI and the code to perform those actions are recorded) in CADFEKO and then simply modify it to create 100 or more instances.

Altair Forum User

Hi @nico7

Have a look at the post below, where a script macro was shared that will do what you need.

Altair Forum User

Hello,

thanks for your answers

good idea for the script, I never used that and after few test is very useful !!

thanks for you example, I will check that now

Regards

Altair Forum User

I have a new question

I try to use a script for my entire model now and I have a problem with the definition of the ground plane

I want a Halsfspacesommerfeld

so at the beginning I create a dielectric as follows :

my_diel = my_project.Media:AddDielectric()
my_diel.Label = 'mer'
my_diel.DielectricModelling.RelativePermittivity = 81
my_diel.DielectricModelling.ConductivityType = cf.Enums.MediumDielectricConductivityTypeEnum.Conductivity
my_diel.DielectricModelling.Conductivity = '5'

and after I try to choose a ground plane definition method as follows

groundPlane=my_project.GroundPlane
groundPlane.DefinitionMethod = cf.Enums.GroundPlaneDefinitionMethodEnum.HalfspaceSommerfeld

but I have this error message

Error 17901: Homogeneous half space medium has an invalid value.

and if I try to define a ground plane medium before :

groundPlane.Medium:Add(my_diel)

Unable to use the property as it is disabled

If you have any idea,

Nicolas

JIF

CADFEKO tries to always be in a consistent state and this is achieved through validation. In this case, validation has you stuck in a corner since you can't do either of the actions without the other. The answer is to make the change at the same time. An example is shown below:

 Environment1 = project.GroundPlane properties = Environment1:GetProperties() properties.DefinitionMethod = cf.Enums.GroundPlaneDefinitionMethodEnum.HalfspaceSommerfeld properties.Medium = Dielectric1 Environment1:SetProperties(properties)

We use the 'GetProperties()' method to get the properties of the ground plane. We then make changes to the table (making these changes won't affect the model. Finally, we apply the settings in the table to the ground plane with the 'SetProperties()' method and this updates the model.

groundPlane.Medium:Add(my_diel)

As a side note, this does seem to be correct. You need to assign the medium and not add it with a method. I didn't test this now - no time. ;-)

Altair Forum User

Thanks for your reply,

it works now, is very great thanks again

Nico

Altair Forum User

Hello all,

I have a new problem,

I used a script to copy and translate a wire :

--Create the wire

startPoint=cf.Point(0,0,0)
endPoint=cf.Point(0,0,0.1)

my_line = my_project.Geometry:AddLine(startPoint,endPoint)

--Create the ellipse
ellipse = my_project.Geometry:AddEllipse(startPoint,0.1,0.1)
-- Union the line and ellipse
my_Union = my_project.Geometry:Union({ellipse,my_line})

--Copy and translate the union

gapx = my_project.Variables:Add('gapx', 3, 'space between each dipole')
translatePoint=cf.Point(0,gapx.Value,0)
my_Union:CopyAndTranslate(startPoint,translatePoint,3)

and after in the interfarce of FEKO, I want to use the parameter sweep script for the variable gapx but when I change the value of gapx nothing appens

When I did the copy and translate without a script FEKO keep the variable in the transform but when I used a script FEKO replace the variable by the value of the variable

Have you a idea to keep the variable and not the value

Regards

Nicolas

JIF

I have a new problem,

Please consider logging new problems in new threads. ;-)

Have you a idea to keep the variable and not the value

The problem is that you are defining a point that only take three coordinate numbers. You can either create a named point and use that named point in the translate (the named point will then use the variable) or you can set the To and From fields directly (without defining a point). Below is an example that uses the second option.

 my_project = cf.GetApplication():NewProject()    --Create the wire startPoint=cf.Point(0,0,0) endPoint=cf.Point(0,0,0.1)  my_line = my_project.Geometry:AddLine(startPoint,endPoint)  --Create the ellipse ellipse = my_project.Geometry:AddEllipse(startPoint,0.1,0.1) -- Union the line and ellipse  my_Union = my_project.Geometry:Union({ellipse,my_line})  --Copy and translate the union  gapx = my_project.Variables:Add('gapx', 3, 'space between each dipole')  -- Changes  w.r.t. your script here -- START properties = cf.Translate.GetDefaultProperties() inspect(properties) -- just for you to see what the properties look like properties.From.U = 0 -- This can take numbers or strings properties.From.V = '0' properties.From.N = startPoint.Z properties.To.U   = 0 properties.To.V   = 'gapx' properties.To.N   = 0 my_Union:CopyAndTranslate(properties,3)