negative number in formula node

[n3ow]

good day.

I am trying to find information on how to include a negative number in the formula node. 

thank you 

[wiebe@CARYA]

Put a negative sign before the number...

[aputman]

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@n3ow wrote:

I am trying to find information on how to include a negative number in the formula node. 

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Click on the border of the formula node, then click the key on the keyboard just above the arrow keys that says "Delete".  Problem solved.  😂

[n3ow]

thank you I see in the example you provided that I was missing a space between the function and the minus sign.

Have a goo day

[paul_cardinale]

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@n3ow wrote:

thank you I see in the example you provided that I was missing a space between the function and the minus sign.

Have a goo day

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I generally don't like goo days (too messy).

[aputman]

A space is not required.

[altenbach]

As some have already hinted, maybe the real solution is not to use a formula node at all. There is really never a compelling reason for them.

Can you take a step back and explain what you are trying to do?

[billko]

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@altenbach wrote:

As some have already hinted, maybe the real solution is not to use a formula node at all. There is really never a compelling reason for them.

Can you take a step back and explain what you are trying to do?

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There are compelling reasons NOT to use them , though, like:

• They are orders of magnitude slower than if you created the same code using native functions.
• You have to worry about syntax (exactly like what the OP is having trouble with).

Of course, this post isn't aimed at educating you, Altenbach.  😉

[Petru_Tarabuta]

"There is really never a compelling reason for them."; "They are orders of magnitude slower than if you created the same code using native functions." - I agree that one is never forced to use the Formula Node: anything that can be achieved inside the Formula Node can of course be achieved using lower-level primitives such as Add, Multiply, Exponential, etc. I also agree that Formula Nodes execute more slowly than the primitives, and, for this reason, they need to be used judiciously.

But for me there is a compelling reason to use them: readability. Formula Nodes are the best option when implementing large, multi-line, complex formulas. Especially when those formulas are defined in a document, such as a PDF that the customer handed us. The code inside a Formula Node can be made to correspond one-to-one to the formula as defined in the customer's PDF. This leads to code that is much easier to understand, verify, and maintain.

It is a bit of a shame that performance needs to be traded off for readability, or vice-versa. Ideally both readability and performance would be achieved simultaneously.

[altenbach]

(Old thread, I know)

Formula nodes can be quite competitive in speed and that's why I didn't touch that topic.

I do have some kind of undiagnosed "formula node dyslexia" and have a hard time to "follow the flow" unless they are very simple.