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Layers - Extraction Support

These functions mainly support the extraction system, but are maintained in the main program and are therefor accepted in feature sets where the extraction system is disabled.

Many of the layer-related functions take a ``standard layer argument''. This can be an integer index number into the layer table, where the index is 1-based, and values less than 1 return the current layer. The argument can also be a string, giving a layer name in layer[:purpose] form, or an alias name. If the string is null or empty, the current layer is returned.

(string) SetLayerExKeyword(stdlyr, string)
The first argument is a standard layer argument indicating a physical layer, or a derived layer name string. The string argument is an extraction keyword and associated text, as would appear in a layer block in the technology file. The specification will be applied to the layer, overriding existing settings and possibly causing incompatible or redundant existing keywords to be deleted. This is similar to the editing functions of the Tech Parameter Editor from the Attributes Menu, when using the Extract or Physical pages.

The return is a status or error string, which may be null.

The following keywords can be specified:

Conductor
Routing
GroundPlane
GroundPlaneDark
GroundPlaneClear
TermDefault
Contact
Via
Dielectric
DarkField
Thickness
Rho
Sigma
Rsh
EpsRel
Capacitance
Lambda
Tline
Antenna

(string) SetCurLayerExKeyword(string)
This is similar to SetLayerExKeyword, but applies to the current layer. This function is deprecated and not recommended for use in new scripts.

(int) RemoveLayerExKeyword(stdlyr, keyword)
The first argument is a standard layer argument indicating a physical layer, or a derived layer name string. This will remove the specification for the extract keyword given in the argument from the layer. The argument must be one of the extraction keywords, i.e., those listed for SetCurLayerExKeyword. The return value is 1 if a specification was removed, 0 otherwise.

(int) RemoveCurLayerExKeyword(keyword)
This is similar to RemoveLayerExKeyword but applies to the current layer. This function is deprecated and not recommended for use in new scripts.

(int) IsLayerConductor(stdlyr)
The function returns 1 if the Conductor keyword is given or implied for the layer indicated by the argument, which is a standard layer argument or a derived layer name string, 0 otherwise.

(int) IsLayerRouting(stdlyr)
The function returns 1 if the Routing keyword is given for the layer indicated by the argument, which is astandard layer argument or a derived layer name string, 0 otherwise.

(int) IsLayerGround(stdlyr)
The function returns 1 if one of the GroundPlane keywords was given for the layer indicated by the argument, which is a standard layer argument or a derived layer name string, 0 otherwise.

(int) IsLayerContact(stdlyr)
The function returns 1 if the Contact keyword is given for the layer indicated by the argument, which is a standard layer argument or a derived layer name string, 0 otherwise.

(int) IsLayerVia(stdlyr)
The function returns 1 if the Via keyword is given for the layer indicated by the argument, which is a standard layer argument or a derived layer name string, 0 otherwise.

(int) IsLayerDielectric(stdlyr)
The function returns 1 if the Dielectric keyword is given for the layer indicated by the argument, which is a standard layer argument or a derived layer name string, 0 otherwise.

(int) IsLayerDarkField(stdlyr)
The function returns 1 if the DarkField keyword is given or implied for the layer indicated by the argument, which is a standard layer argument or a derived layer name string, 0 otherwise.

(real) GetLayerThickness(stdlyr)
The function returns the value of the Thickness parameter given for the layer indicated by the argument, which is a standard layer argument or a derived layer name string.

(real) GetLayerRho(stdlyr)
The function returns the resistivity in ohm-meters of the layer indicated by the argument, which is a standard layer argument or a derived layer name string, as given by the Rho or Sigma parameters, if given. If neither of these is given, and Rsh and Thickness are given, the return value will be Rsh*Thickness.

(real) GetLayerResis(stdlyr)
The function returns the sheet resistance for the layer indicated by the argument, which is a standard layer argument or a derived layer name string. This will be the value of the Rsh parameter, if given, or the values of Rho/Thickness, if Rho or Sigma and Thickness are given, or 0 if no value is available.

(real) GetLayerEps(stdlyr)
The function returns the relative dielectric constant for the layer indicated by the argument, which is a standard layer argument or derived layer name string, as given by the EpsRel parameter if applied.

(real) GetLayerCap(stdlyr)
The function returns the per-area capacitance for the layer indicated by the argument, which is a standard layer argument or a derived layer name string.

(real) GetLayerCapPerim(stdlyr)
The function returns the per-perimeter capacitance for the layer indicated by the argument, which is a standard layer argument or a derived layer name string.

(real) GetLayerLambda(stdlyr)
The function returns the value of the Lambda parameter for the layer indicated by the argument, which is a standard layer argument or a derived layer name string.


next up previous contents index
Next: Selections Up: Main Functions 3 Previous: Layers   Contents   Index
Stephen R. Whiteley 2017-11-08