Hello ,
How should I fix the following issue. Initially works fine but changing the units cause the following error.
ACCEPTED SOLUTION
Accepted Solutions
It has often proven that inline evaluations (evaluating a value in the same region where you define it) is something which is better avoided in Mathcad/Prime and that you are better off to put definition and evaluation in two different regions.
Nonetheless I would call what you experience a bug in Prime (it works OK in real old Mathcad = Mathcad 15, 14,.. and also in older Prime versions - at least it works OK in P6) and so you may consider reporting it to official PTC support by opening a support case.
As far as I remember this bug popped up here in the forum already in the past now and then.
Solution/workaround is to avoid inline evaluation and evaluate the range variable in a separate region.
BTW, doing what you did - defining a range variable and using inline evaluation was an undocumented way to turn a range into a vector.
This convenient option was deliberately made unfeasible by PTC in version 10 because it contradicts the logic that an evaluation changes the data type. Unfortunately, the built-in ‘vec’ function is only now being supplied as an alternative in version 11.
But this change should not be the reason for the bug, because it is already present in version 9, but not yet in version 6!
@fahmed-2 wrote:
Thank you, how should i refer the last i-th number of the range then since "last()" is not working
Why would you do so?
A range is not a collection of numbers like a vector but rather kind of an implicit loop.
last() is used to get the last index in a vector, a range not being a vector does not consist of numbered values.
It depends on what your final goal is but maybe you need to turn the range into a vector. In Prime 11 you may use the new built-in function "vec" to do so, in Prime 10 you may use one of the various "vec" function which were posted here in the forum by various people.
A simple version is shown in the picture below
