Skip to main content
R
RatherB.Fishing1-Visitor
1-Visitor
March 19, 2013
Question

Trying to output function to a text or excel file

  • March 19, 2013
  • 5 replies
  • 2040 views

I've tried many approaches in Prime 2.0 to output the result of a function to a file for use in another application.

There seems to be little that's intuitive about Prime, and no information about exporting data.

I need to export the result of a function F(t,n) where t and n are not integers. Seems i have to create a matrix to do this. But all attempts fail for one reason or another.

Writing it as a program it won't let me assign the output of the function to a matrix column as a declaration, and as a declaration statement; I have to use the matrix integers as part of the function. But since they aren't integers, it can't be done. Do I have to rewrite this to convert the integers of a matrix to be the variables in the equations? As in MathCAD can't work with floating point numbers directly in a matrix?

if t:= 0, T/1000..T n = 10

F(t,n):= a summtion as variable approaches n

Why can't I assign a matrix[x,0] := t

matrix[x,1]:=F(t,n)

then use WRITEFILE to output the info?

I'm about to just program this in Visual Studio and skip mathCAD completly... it shouldn't be this hard. I've talked to other MathCAD users and none of them can figure it out either.

5 replies

M
MichaelH1-Visitor
1-Visitor
March 19, 2013

You are defining t as some kind of range variable, but it should be a vector for your purpose.

I've defined j:=0..1000, and then t[j:=j*T/1000.

Other details are shown in the attachment.

Werner_E
Werner_E25-Diamond I
25-Diamond I
March 19, 2013

Not sure what you are trying to do.

in your attempts to write files you are trying to write matrices which do not exit so Mathcad of course does not know what to write. You are using indices in matrix which are not defined.

Your program block doesn't do anything and would fail if you try to do so, as you cannot just write M[k,l. What shoul Mathcad do? You cannot assign a column in a Matrix using the column selector - thats for slecting a column in an existing matrix, not for builing a matrix (you would rather use something like augment).

Must most import af all you will have to learn the difference between a range variable (your t) and a vector (that what you obviously want t to be). While they may look the same they aren't.

Look if the attached would get you in the right direction

R
RatherB.Fishing1-VisitorAuthor
1-Visitor
March 19, 2013

Obviously the program block is not complete - if it were I wouldn't be asking.

I'll brute force the matrix by using the equation for t in the function then I can assign that in the matrix.

This is just an awkward, method for creating th output. The plot shows the functions output, but it can't be output that way. I was looking for the better way get the plot data to a file.

I'll assume there is none, and rewrite the function so it won't cause a error in the matrix.

M
MichaelH1-Visitor
1-Visitor
March 19, 2013

Have you looked at my attached file?

I think it does what you want.

If not, what is it missing?

Terms & ConditionsAccessibility statement