dbCreateTrackPattern

dbCreateTrackPattern(
d_cellviewId
g_isHorizontal
n_startCoord
x_numTracks
n_trackSpace
[ tx_layer ]
)
=> d_trackPatternId / nil

Creates a track pattern in the specified cellview.
To color the track pattern, use dbSetTrackPatternFirstTrackColor or dbSetTrackPatternColorAlternating.

d_cellviewId	The database ID of the cellview.
g_isHorizontal	Specifies a horizontal or vertical track pattern. Valid values: `t`: track pattern is horizontal. `nil`: track pattern is vertical.
n_startCoord	Specifies the start coordinate of the track pattern.
x_numTracks	Specifies the number of track lines of the track pattern.
n_trackSpace	Specifies the tracking space between two track lines.
tx_layer	Optional argument that specifies routing layer of the track pattern.

d_TrackPatternId	The database ID of the track pattern if the creation is successful.
`nil`	`nil` is returned if the cellview ID is invalid or one of the given arguments is invalid.