Dear all!
I couldn't find the solution so far, so I write a new thread (hope it is on the right place).
I am preparing some automatic form for field data.
The problem is that I wont to calculate only with cells which contain numbers.
Please see attachment.
For example, if I measure 4 sets of fractures in the field and later I want to calculate some trigonometric functions,
how can I use only cells which contain this filed data - of course automatically?
In example, you can see that trigonometric functions are calculated also for empty cells,
and the total result is wrong, because for example Cos0=1, but in fact there is no data for this empty cells.
hope you understand me
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