CC calculation order

Question

Hi! 
 
 I've got a SEQ type CC that should be calculated only once during the reprocessing and a peak or group type that uses the result of the SEQ one. Since this the SEQ type CC is calculated inj number * peak number times.... is it possible to avoid the recalcs? In the SEQ type CC there is an inputbox() for the case of some missing parameters and i don't want to enter it soooo many times.. only once. Try to add sample order filter, but if the given sample has not any peaks then it fails... I'm lost 
 
 Thx, 
 Peter

martin.adams · Accepted Answer

Hello, 
 
 So, I am not sure what is going on in the backend with that code, but I have seen issues with directly using the CC name. I created a CCF file for a customer and directly referenced a CC name in a calculation. The calculation was similar to yours where a sequence scope value was used in a peak scope calculation. The calculation worked fine but when the customer used it the performance was slow for some injections. In looking at the issue, I found the injections that had the problem had many more (400+ vs 20) peaks than the typical results. I rewrote the CCs to remove unneeded iterations of the calculations but also changed to the CurrentSequence. GetDoubleCC method to call the reference CC value. Once I made that specific change the performance improved drastically for the CC processing. I was not sure the cause at the time, but it seems your issue might indicate a reason. I also talked to the CDS product group about the use of complex VB code in CC and they are saying it is not documented or supported. They did not block it in CC so it is available but use at your own risk. 
 
 Marty Adams

CC calculation order

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