7:30 a.m.
Hello everyone,
I am constructing a set of xy plots in a loop, using a predefined list of variables for
the plots. I'd like the names of the plots to include the variables names. Here is a
MWE, including some comments on what I tried and did not work:
-------------------
#Loop through list of vars and create xy plots
nulldata 100
setobs 1 1 --cross-section
x_1 = uniform()
x_2 = uniform()
y_1 = uniform()
y_2 = uniform()
list xs = x*
list ys = y*
loop for (i=1; i<=nelem(xs); i++)
$i <- gnuplot xs[i] ys[i] #works
#printf "%s", varname(xs[i]) #works not -- error msg not of help
#string name = varname(xs[i]) #works not -- error msg indicates series ID needed
#string name = "@xs[i]" #works not either -- error msg not of help
string name = "name_$i" #works
@name <- gnuplot xs[i] ys[i] #works
endloop
-------------------
Any idea how I can make this work?
Kind Regards,
Frederik
1:10 p.m.
Am 23.02.2017 um 08:30 schrieb Schaff, Frederik:
I am constructing a set of xy plots in a loop, using a predefined
list
of variables for the plots. I’d like the names of the plots to include
the variables names. Here is a MWE, including some comments on what I
tried and did not work:
Any idea how I can make this work?
Maybe something like this (untested):
loop foreach i xs
$i <- gnuplot $i ys[i]
endloop
Not sure the ys[i] would work inside this loop, though. Perhaps you
would have to use another index j, initialize that to 1 and increment
manually via j++ at the end.
But definitely look up the doc for the foreach-variant of the loop.
cheers,
sven
1:32 p.m.
Many thanks,
I tried a slightly different version from yours:
--------
.... (see first comment)
scalar j = 0
loop foreach i xs
j++
print j
$i <- gnuplot $i ys[j]
endloop
--------
unfortunately it is not working. Also, what if I wanted to combine the var names of both
the items? Your option would not allow this. Is there now way to simply access the name of
a var by means of the name of the var?
Best
Frederik
-----Ursprüngliche Nachricht-----
Von: gretl-users-bounces(a)lists.wfu.edu [mailto:gretl-users-
bounces(a)lists.wfu.edu] Im Auftrag von Sven Schreiber
Gesendet: Donnerstag, 23. Februar 2017 14:11
An: gretl-users(a)lists.wfu.edu
Betreff: Re: [Gretl-users] loop, string substitution and varname from list
Am 23.02.2017 um 08:30 schrieb Schaff, Frederik:
> I am constructing a set of xy plots in a loop, using a predefined list
> of variables for the plots. I'd like the names of the plots to include
> the variables names. Here is a MWE, including some comments on what I
> tried and did not work:
> Any idea how I can make this work?
Maybe something like this (untested):
loop foreach i xs
$i <- gnuplot $i ys[i]
endloop
Not sure the ys[i] would work inside this loop, though. Perhaps you would
have to use another index j, initialize that to 1 and increment manually via j++
at the end.
But definitely look up the doc for the foreach-variant of the loop.
cheers,
sven
_______________________________________________
Gretl-users mailing list
Gretl-users(a)lists.wfu.edu
http://lists.wfu.edu/mailman/listinfo/gretl-users
1:41 p.m.
Am 23.02.2017 um 14:32 schrieb Schaff, Frederik:
Many thanks,
I tried a slightly different version from yours: -------- .... (see
first comment) scalar j = 0 loop foreach i xs j++ print j $i <-
gnuplot $i ys[j] endloop -------- unfortunately it is not working.
Also, what if I wanted to combine the var names of both the items?
Your option would not allow this. Is there now way to simply access
the name of a var by means of the name of the var?
Actually I was too cautios, the yy[i] trick does work in the foreach
loop. Here's a tested example:
<hansl>
open denmark
list xx = IBO IDE
list yy = LRM LRY
loop foreach i xx
plot_$i <- gnuplot $i yy[i]
endloop
</hansl>
Notice three things:
1) Just $i on the left-hand side as the symbol name doesn't seem to be
allowed, probably because it's already an identifier in use. Don't know
whether it's a bug or not, but as a workaround I added the prefix plot_.
2) When you want to insert the name of the variable, we use $i.
3) The variable i itself is an integer counter, so we use it in yy[i].
hth,
sven
2:05 p.m.
On Thu, 23 Feb 2017, Sven Schreiber wrote:
Am 23.02.2017 um 14:32 schrieb Schaff, Frederik:
> Many thanks,
>
> I tried a slightly different version from yours: -------- .... (see
> first comment) scalar j = 0 loop foreach i xs j++ print j $i <-
> gnuplot $i ys[j] endloop -------- unfortunately it is not working.
> Also, what if I wanted to combine the var names of both the items?
> Your option would not allow this. Is there now way to simply access
> the name of a var by means of the name of the var?
Actually I was too cautios, the yy[i] trick does work in the foreach loop.
Here's a tested example:
<hansl>
open denmark
list xx = IBO IDE
list yy = LRM LRY
loop foreach i xx
plot_$i <- gnuplot $i yy[i]
endloop
</hansl>
Something a little more general:
<hansl>
open AWM
list xx = YEN GCN STN
list yy = YER GCR LTN
k = 1
matrix my = yy
loop foreach i xx
string s = varname(my[k])
string plotname = sprintf("p%d_$i_vs_%s", k, s)
@plotname <- gnuplot $i yy[k]
k++
endloop
</hansl>
-------------------------------------------------------
Riccardo (Jack) Lucchetti
Dipartimento di Scienze Economiche e Sociali (DiSES)
Università Politecnica delle Marche
(formerly known as Università di Ancona)
r.lucchetti(a)univpm.it
http://www2.econ.univpm.it/servizi/hpp/lucchetti
-------------------------------------------------------
2:50 p.m.
-----Ursprüngliche Nachricht-----
Von: gretl-users-bounces(a)lists.wfu.edu [mailto:gretl-users-
bounces(a)lists.wfu.edu] Im Auftrag von Riccardo (Jack) Lucchetti
Gesendet: Donnerstag, 23. Februar 2017 15:05
An: Gretl list <gretl-users(a)lists.wfu.edu>
Betreff: Re: [Gretl-users] loop, string substitution and varname from list
On Thu, 23 Feb 2017, Sven Schreiber wrote:
> Am 23.02.2017 um 14:32 schrieb Schaff, Frederik:
>> Many thanks,
>>
>> I tried a slightly different version from yours: -------- .... (see
>> first comment) scalar j = 0 loop foreach i xs j++ print j $i <-
>> gnuplot $i ys[j] endloop -------- unfortunately it is not working.
>> Also, what if I wanted to combine the var names of both the items?
>> Your option would not allow this. Is there now way to simply access
>> the name of a var by means of the name of the var?
>
> Actually I was too cautios, the yy[i] trick does work in the foreach loop.
> Here's a tested example:
>
> <hansl>
> open denmark
>
> list xx = IBO IDE
> list yy = LRM LRY
>
> loop foreach i xx
> plot_$i <- gnuplot $i yy[i]
> endloop
> </hansl>
Something a little more general:
<hansl>
open AWM
list xx = YEN GCN STN
list yy = YER GCR LTN
k = 1
matrix my = yy
loop foreach i xx
string s = varname(my[k])
string plotname = sprintf("p%d_$i_vs_%s", k, s)
@plotname <- gnuplot $i yy[k]
k++
endloop
</hansl>
-------------------------------------------------------
Riccardo (Jack) Lucchetti
Dipartimento di Scienze Economiche e Sociali (DiSES)
Università Politecnica delle Marche
(formerly known as Università di Ancona)
r.lucchetti(a)univpm.it
http://www2.econ.univpm.it/servizi/hpp/lucchetti
-------------------------------------------------------
Many thanks to both of you! The second, more general is working fine. Although it would be
a nice feature if one could directly access the name of a variable (something like
idname).
Regards,
Frederik
2:57 p.m.
Am 23.02.2017 um 15:50 schrieb Schaff, Frederik:
Many thanks to both of you! The second, more general is working
fine.
Although it would be a nice feature if one could directly access the
name of a variable (something like idname).
For a list L, "(varnames(L))[i]" should get you a string with the name
of the i-th variable in the list.
(Allin, if you read this: "varnames(L)[i]" produces an error, the extra
parenthesis is necessary, don't know whether that's a bug, although I
certainly understand why gretl is choking.)
cheers,
sven
3:40 p.m.
On Thu, 23 Feb 2017, Sven Schreiber wrote:
Am 23.02.2017 um 15:50 schrieb Schaff, Frederik:
> Many thanks to both of you! The second, more general is working fine.
> Although it would be a nice feature if one could directly access the
> name of a variable (something like idname).
For a list L, "(varnames(L))[i]" should get you a string with the name of the
i-th variable in the list.
(Allin, if you read this: "varnames(L)[i]" produces an error, the extra
parenthesis is necessary, don't know whether that's a bug, although I
certainly understand why gretl is choking.)
Two points here. For a list L,
* "varnames(L)[i]" now works OK in git; and
* The alternative "varname(L[i])" now also works.
The first fix was just a matter of trivially generalizing something.
The second was kinda subtle: varname() required the ID number of
a series, while what you get from "L[i]" is an actual series, not its
ID number. Now varname() accepts either an ID number or a series
itself.
Allin
8:19 a.m.
Two points here. For a list L,
* "varnames(L)[i]" now works OK in git; and
* The alternative "varname(L[i])" now also works.
The first fix was just a matter of trivially generalizing something.
The second was kinda subtle: varname() required the ID number of a series,
while what you get from "L[i]" is an actual series, not its ID number. Now
varname() accepts either an ID number or a series itself.
Allin
Perfect! Many thanks!
2857
days inactive
2858
days old
8 comments
4 participants
participants (4)
-
Allin Cottrell -
Riccardo (Jack) Lucchetti -
Schaff, Frederik -
Sven Schreiber