Shifting Matrix/Vector in Mathcad

[Mathcad111]

Example: 

[terryhendicott · Accepted solution]

Hi,

Like this:-

Cheers

Terry

[Mathcad111]

Hi, this method is not working for -ve values and floating values in 'D', Pse suggest 

Eg: D=(0 1 -2 0)

Eg: D=(0 1.5 -2 0)

[terryhendicott]

Hi,

Can you please provide an original "S" matrix and a Resulting matrix "Res" when you use a negative whole number in "D"?  I imagine this means a rotation of "S" values downwards in that column?  Can do this.

Can you please provide an original "S" matrix and a Resulting matrix "Res" when you use a floating value in "D"?  Not sure what this means?

Cheers

Terry

[Mathcad111]

terryhendicott - 'I imagine this means a rotation of "S" values downwards in that column?' - Yes

terryhendicott -'when you use a floating value in "D"?  Not sure what this means?' - ok just for now, we will avoid/omit this requirement, let only focus on '-ve' values    

terryhendicott -'Can you please provide an original "S" matrix and a Resulting matrix "Res"', - currently I can't, i'll work on the same shortly.  

[Mathcad111]

Pse check below attached, 

[Mathcad111]

Tried this method but its not working, PFA.

[terryhendicott]

Hi,

Hoping this is what you are seeking:-

Cheers

Terry

[Mathcad111]

Thanks lot for response, i'll check the same.  

[LucMeekes]

Note that with a matrix of 4 rows, shifting 2 or -2 is the same.

Shifting a matrix over a non-integer amount of rows is not obvious. How would you define it?

Success!
Luc

[LucMeekes]

OK, here's an implementation that takes an approach also for non-integer values of the 'number of elements to shift':

Works also in Express.

(Prime 4 file attached)

Success!

Luc

[Werner_E]

Her are my 2 cents