Learning Forum

[Bicky]

Hi all,

I have been struggling with an issue while sweeping parameters in lumerical MODE.

When I sweep a parameter there is a value for which I don't seem to get any result. It causes the sweep to break because I get the following error: The optimization or parameter sweep object 'name_of_the_sweep' has no results.

It is said on the script prompt "Warning: An empty data set was found for ::model::..."

and then I get the error in red.

Question: how can I skip this error and get the data that it has already calculated?

Thanks

Bicky

[Guilin Sun]

Since the information (such as what is changing during sweep and what result is obtained, It seems it is varFDTD?), I can only suggest to do the following:
For optimization, you have no choice once you set the parameter range and points. But you can modify them properly.
For sweep:
1: check that problematic file and see why it does not have result. For example in FDE if the number of trial modes is small it may not be able to find the desired mode. For varFDTD it may be diverged. ONce you know the cause please find some information to fix it. You may find some useful posts searching here Index of Ansys Insight posts -Single place to search topics written by Ansys-Lumerical Engineers
2: To avoid one parameter, you can either sweep given values instead of in "range", or using script inside "model" to specify sweeping values.
However, it is better to do #1 to know the cause.

[sy140876]

Hi
It may be a solution to your problem.
Use script to sweep rather than sweep in optimization.
In script, you can use the 'try' command like
try{
getresult }
and the warning will be skipped

[Guilin Sun]

this is another good idea, thank you!