Mean-Max- Min functions for vectors

[YA_10963798]

Hi everyone, 

I have this function that I used to find R from it 

Now I want to find the min, max and max  from it ..but didn't work . It tells me that the values should be scalar 

and when I do this , it gives me the same results of the original one not the average

I need to find the min, average , and max values

Thanks 

Yusra 

[LucMeekes]

Hi Yusra,

Your z.tips is a range, not a vector. Applied to a function that makes the function result a range at best, but not a vector.

 Try making z.tips a vector, e.g. with:

and vectorise your expression:

Success!
Luc

[YA_10963798]

It didn't work, do you think I'm missing something?

[LucMeekes]

Don't vectorise the other expression:

Success!

Luc

[YA_10963798]

When I do this another error appears because I change ztips... but when ztips is range it works again 

[LucMeekes · Accepted solution]

You may need to recalculate the sheet.

Success!
Luc

[YA_10963798]

thanks it works

[Werner_E]

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@YA_10963798 wrote:

When I do this another error appears because I change ztips... but when ztips is range it works again 

---

When you do - what?

Luc told you that you should NOT use vectorization when you DEFINE the function R...

NOT 

but rather

as you initially did.

Or are you irritated because of the green boxes and think that they indicate an error? They don't, its just a warning because you already had defined z_tips before and you are now overwriting/replacing that definition by a new one. Warnings can be turned off in the menu

Click the upper part of that button to turn on or off the warnings. Clicking the arrow let's you select in detail if the warning should concern functions, units, constants, variables.

As you are using Prime 11 you can also use the new function "vec" to define z_tips as a vector, if you like:

You can't vectorize the definition of the function R.s;cal;max because this would also vectorize the vectors z and q, but these must remain vectors.

If you find it annoying having to vectorize the function CALL every time when you use it in your sheet with e vector z_tips as its argument instead of the expected scalar argument, you can define it using a local function which you call vectorized in the definition:

That way you can use that function either with a scalar argument z_tips or with a vector as its argument.

But you should not use a range as this would be a misuse of a range for something its not intended for. Exception is when you make a plot. Here using a range is perfectly OK:

You may get the same plot if you use a vector instead, though.

Ranges should be used in three occasions only:

• in plots
• for indexing the elements of a vector or matrix
• inside a program as part of a for-loop

[YA_10963798]

Brilliant as always thanks