Question about "sprintf" "@" "do for"
Hello,
this works:
A1=3D1
A2=3D2
A3=3D3
i=3D1
vari=3Dsprintf("A%.f",i)
print vari,"=3D",@vari
i=3Di+1
vari=3Dsprintf("A%.f",i)
print vari,"=3D",@vari
i=3Di+1
vari=3Dsprintf("A%.f",i)
print vari,"=3D",@vari
do for [i=3D1:3]{
vari=3Dsprintf("A%.f",i)
print vari
}
But I want to have "print vari,"=3D",@vari" in the loop. But it dosen't=20
work. Why can't I use "print vari,"=3D",@vari" in the loop? Is there a=20
solution for?
J=C3=B6rg
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0 |
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UTF
2/2/2016 7:49:52 PM
comp.graphics.apps.gnuplot
5008 articles. 
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2 Replies
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Jörg Buchholz wrote:
> Hello,
>
> this works:
>
> A1=1
> A2=2
> A3=3
>
> i=1
> vari=sprintf("A%.f",i)
> print vari,"=",@vari
> i=i+1
> vari=sprintf("A%.f",i)
> print vari,"=",@vari
> i=i+1
> vari=sprintf("A%.f",i)
> print vari,"=",@vari
>
> do for [i=1:3]{
> vari=sprintf("A%.f",i)
> print vari
> }
>
> But I want to have "print vari,"=",@vari" in the loop. But it dosen't
> work. Why can't I use "print vari,"=",@vari" in the loop?
The @ indicates macro expansion, which only happens once.
And that one time is before the loop is executed.
So whatever value @vari has at the start of loop execution, that
is the value it will have every time through.
> Is there a solution for?
You don't need macros for this
do for [i=1:3] {
vari = <whatever>
print vari, ' = ', value(vari)
}
> Jörg
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Ethan
2/3/2016 12:05:25 AM
On 03.02.2016 01:05, Ethan A Merritt wrote:
> You don't need macros for this
>
> do for [i=1:3] {
> vari = <whatever>
> print vari, ' = ', value(vari)
> }
Thanks a lot Ethan, with the keyword "value" I also found the relevant
side in the manuel.
Jörg
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UTF
2/3/2016 6:30:05 AM
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