Hi there,

I am migrating my old mathcad files to Smath.
As you can see in the uploaded picture i tried
to emulate the function in Smath without succes.
I know that i can write a few line code to achieve this.
But I want to keep it easy readable for people who are not
so fit in reading code.
Does somebody have a hint how to achieve this?

Hi Adrian. SMath it's ORIGIN = 1, and you can't change it. It's probably best to rewrite the code in Mathcad for ORIGIN = 1 and then move it to SMath.

Best regards.
Alvaro.

Hi Alvaro,

Thank's for your input. Well I am not importing the mcad files in Smath, I am rewriting it in Smath.
Even when I set the ORIGIN in Smath to 1, i.e: n:=[1..10] , I don't get any result. Could it be that
this feature "x[n+1" is not availlable in Smath?

Greetings

Adrien

Wrote

Hi Alvaro,

Thank's for your input. Well I am not importing the mcad files in Smath, I am rewriting it in Smath.
Even when I set the ORIGIN in Smath to 1, i.e: n:=[1..10] , I don't get any result. Could it be that
this feature "x[n+1" is not availlable in Smath?

Greetings

Adrien

This works, if it suits you.

Regards.

Hi Adrien (sorry, I wrote Adrian before). ORIGIN it's an option for Mathcad, not for SMath. You can read about it in the Mathcad help here. As another example of changing the array origin, you have the 'Option base 1' in visual basic.

This is your code in Mathcad with ORIGIN = 0, which is the default value:



Here, the same Mathcad code with ORIGIN = 1:



Finally, you can translate it to SMath:



Notice that the scan in SMath under the index array isn't that complete like in Mathcad nor Matlab, and usually you can use only variable ranges but not operations over those ranges in the left-side of the assignment.

Hope that's helps.

Best regards.
Alvaro.

Wrote

Thank's for your input. Well I am not importing the mcad files in Smath, I am rewriting it in Smath.
Even when I set the ORIGIN in Smath to 1,i.e: n:=[1..10] , I don't get any result.Could it be that
this feature "x[n 1"is not available in Smath?

You ambiguate yourself between the two .
Try this same/otherwise than Alvaro ... Jean

Page7 Recursive Otherwise.sm (20,53 KiB) scaricato 1393 volta(e).

... added the graph.

Page7 Recursive Otherwise.sm (22,29 KiB) scaricato 1349 volta(e).

... This one is anchored at ORIGIN 0 [X,Y]

Page7 Recursive Otherwise.sm (22,4 KiB) scaricato 1385 volta(e).

Hi & thank's both of you!

Fantastic and many thank's for your quick and competent reply.

Greetings

Adrien

Wrote

Fantastic and many thank's for your quick and competent reply.

Adrian, enjoy that classical model ... Jean

Page34 Recursive Model DE.sm (10,49 KiB) scaricato 1268 volta(e).