Program crashes when viewing single m/z histograms.

[melinkhuber]

Affected version 1.2.4

Error description

I use the Nu non-targeted import for ICP-TOFMS data. I process data without quantification. Initially, event recognition looks as usual. However, when I try to get the histogram view of a single m/z in the results tab, SpCal crashes.

Error notification window opens: Title: "Uncaught Exception. Message: "cannot convert float NaN to integer".

Entire program shuts down after clicking OK.

Hypothesis

• There are blanking event gaps in the data. When I exclude the gaps from the selected time region, everything is fine.
• In version 1.2.2. the exception is also thrown but SpCal does not crash. In this version, the single m/z plot is shown but the dashed "LOD" line is not shown. It appears that the error comes from calculating the LOD marker line.
• The error does not appear when using default thresholding settings, i.e., automatic, non-iterative and no window. Settings for thresholding that cause the crash: Poisson, iterative, window = 1000.

Cheers!

[djdt]

Hi,

I am guessing this is caused by NaNs getting into the histogram data. Can you send the sample file causing the crash?

Cheers

[djdt]

Closed by #19.