$ranges

出自 DDCC TCAD TOOL Manual
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This is to set up the range of the rectangular regions. There are four columns for each region to fill in x start point left x end point right y start point top y end point bottom. Unit:{\mu}m

$ranges
x_left x_right y_top y_bottom
...
...
repeat for N ranges defined by $totalregion


Example:

$ranges
-0.1 10.0 20.0 15.0
-0.1 10.0 15.0 0.0

This means that there are two rectangular regions. the first region covers the area which x starts from -0.1 um to 10.0 um and y starts from 15.0 um to 20.0 um. The second region covers the area which x starts from -0.1 um to 10.0 um and y starts from 0.0 um to 15.0 um.

Related commands:
$totalregion, $parameters