SubFrameSelector Graphs

[John_Gill]

Hi,

Running PixInsight 1.8.8.4 Ripley on a Windows 10 version 1909 build18363.657

Just re-processing some older images and SFS crunches all the images and calculates the weighting and all is good, except that the graphs do not display.

The other issue is not a bug, but I suspect bad data.... I add the "bad images" and Measure Subframes and then the Weighting formula has a red X next to it and in the Measurements window the FWHM and ECC show -nan(ind) ..... any ideas as to what is wrong?

space is not black
John

[dave_galera]

NaN in javascript means Not A Number, i.e. a calculation does not give a numeric answer. This is a problem with many of the scripts they just don't handle errors very well, and very few give a graceful error.....they just blow up!!

Check your formula is giving a numeric answer etc.

[John_Gill]

I think it is just bad data cos the formula works with everything else ... I was just curious.

Any ideas about the graphs?

John

[dave_galera]

Yes it is probably bad data that is causing a non-numeric calculation result, but I think it should handle it more gracefully.

[John_Gill]

About the graphs not displaying, I did a shutdown and restart of the laptop and "Hey Presto" the graphs are back ... 

Oh well...when in doubt, reboot and restart ...

John

[pkomatovic]

Hi,

I have same problem after update to 1.8.8.3. Before that all my expressions worked fine.

I get same error as John. After applying expression for weighting  the graph disappears and i get the Nan massage in the console...

My expressions are for approval: FWHM < 6 && Eccentricity <= 0.7
and for Weighting:
(15*(1-(FWHM-FWHMMin)/(FWHMMax-FWHMMin)) + 15*(1-(Eccentricity-EccentricityMin)/(EccentricityMax-EccentricityMin)) + 20*(SNRWeight-SNRWeightMin)/(SNRWeightMax-SNRWeightMin))+50

Any help would be appreciated.

Peter
 

[John_Gill]

Hi,

My formula does not have the +50 and I do not use the "expression" for approval.

John

[pkomatovic]

Ok, but the approval expression does work on its own without the weighting. Both worked fine until version 1.8.8.3.
So something must have changed in the script engine why this formula is no good anymore.

Peter
 

[pkomatovic]

Just tried 1.8.8.5 and new updates and all works fine again!
There must have been some bug in 1.8.8.3 an 1.8.8.4 

Peter