Update variable manually

---

@GB_10910688 wrote:

Hello,

 

For a project, I would like to store the result of the following expression :

 in another value (called prev for this example). 

 

But, I would like to update it manually, even if my parameters change. That way, I would be able to compare 2 curves with different parameters on the same graph in the same sheet.

 

Can someone help me ? 

Grégory

 

---

I guess the most obvious way would be to manually copy and paste the numerical values of that vector to a new variable "prev". That would be easy to do in real Mathcad but could be problematic in Prime.

Another option could be to write the variable value in a file using APPENDPRN, so this file would collect all values of the variables being calculated after a recalculation of the worksheet (either automatically triggered by an input variable change or a manual recalculation).

The most clean option (but probably also most elaborate one, depending on the complexity of your sheet/calculations) would be to turn all your calculations into functions dependent on all input variables. That way you could call your calculations with different inputs and compare them easily side by side. If the calculations you are interested in is just the one you show in your picture (one vector dependent on three input vectors) the functional approach would be very easy to implement. If you experience difficulties doing so, come back here and attach your worksheet.