Help! Why does this array not work?

[jspencer03333]

Why does the first function of "X.bolt.w" not compute, but if I remove the end values of n.b.row.h*29, it works - as shown in the second function. It doesnt make any sense.

[MikeArmstrong]

Firstly you can't define your programs loops like that. Look in the help menu for tips on this.

It also looks like you haven't defined x.s in your worksheet.

Mike

[jspencer03333]

My bad, I took this out of a larger file. I updated and re-attached

Look at how the first definition of X.bolt.w does not work, but then the second definition works fine. All I did to the first is as another row at the end, exactly like the others.

[AlanStevens · Accepted solution]

I'm surprised the second one worked!! You should probably use something like the syntax as shown in the attached - it's much simpler!

Alan

[jspencer03333]

Interesting, I dont know why I didnt think the range variable recognized number patterns...that's awesome!

Thanks everyone for the help, as you can see I am not a mathcad expert.

[RichardJ]

It seems to be a rather arbitrary limit on how many entries you can have in the list for a for loop. it works OK in version 11, but not 13, so I guess it was introduced when the rewrote the compute engine in 12. To get around it, put the list in a vector (which, IMHO, would be better style anyway). Or, as Alan suggests, don't use a list at all.

[wayne]

James,

I assume you are trying to determing the x and y corrd of each bolt, eventually to calculate an eccentrically loaded bolt group?

Anyway, attached is a more general function to do this.

Wayne