add time_out as array provided for radcam option

keep previous xtomo time_interval as is

With:

• aa1=gdat([81880],'radcam','doplot',1,'freq','slow','camera','upper');

we get interpos smoothed interpolation on 10kHz which may not be sufficient, so asking for 50kHz yields better information but still easier for quick analysis than full raw data

• aa2=gdat([81880],'radcam','doplot',1,'freq','slow','camera','upper','time_out',[aa1.t(1):2e-5:aa1.t(end)]);

A simple other use case:

• aa1=gdat([81880],'radcam','doplot',1,'time_out',[0.3 1]); % to get raw data within this time interval

requested review from @lsimons

assigned to @amerle

I am happy to review it, but without comments in the code or tests, it's really difficult...

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• 79431162 - correct interval search

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• 5396548c - add comment for time_out in sxr

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• 75d0c4ff - set default slow frequency to 40kHz

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I am fine to add extra tests, if ok for the load

One question, do we have interpos on CI or we enforce running on some lac?

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• cf361155 - indent correctly

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• 127e80e8 - add comments to follow freq and time_out requests for radcam

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added 2 commits

• a8ec032a - 1 commit from branch master
• 21f34ee1 - Merge branch 'master' into add_timeout_radcam

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resolved all threads

approved this merge request

Seems good to me. Merge when ready

mentioned in issue #65

added 11 commits

• 21f34ee1...79172dc4 - 10 commits from branch master
• 82407c98 - Merge branch 'master' into add_timeout_radcam

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enabled an automatic merge when the pipeline for 82407c98 succeeds

merged