Loop G rows of a matrix

[Snowshoeman]

I'm trying to pull G number of rows from an array.  The For loop is not working.  It gives me the whole array instead.

[Snowshoeman]

Program attached.

[terryhendicott]

Hi,

ORIGIN is set to default of 0.  G=3 means fourth row.

Use the submatrix() function.

Cheers

Terry

[Snowshoeman]

Yeah,  I did the same.  I thought I should be able to do the same with a for loop.

[Werner_E · Accepted solution]

In your attempt you never access a single row of the matrix. Here some comments:

I assume that when G=3 you want the program to return the top three rows of your matrix - independent from the setting of ORIGIN.

If you insist on using a for-loop you could do it that way using the row operator:

Personally I would prefer using a more generic utility function where the number of rows is an additional function argument:

But what exactly do you have against the "submatrix" function?

P11 file attached

[Snowshoeman]

Thank You. I like the method of calling out the number of rows in the function's argument.  

Nothing against the submatrix command.  But your programming is more intuitive for me.