From flampis@emp.uc3m.es Mon Jun 27 09:55:55 2011
From: Federico Lampis UC3M <flampis@emp.uc3m.es>
To: gretl-users@gretlml.univpm.it
Subject: [Gretl-users] yrange of gnuplot with scalar
Date: Mon, 27 Jun 2011 15:55:51 +0200
Message-ID: <1309182951.1710.8.camel@b701>
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Hi,

is it possible to use some scalar in the commands of gnuplot? I have in
my funcion a graph and it seems that  gnuplot does not allow to put
scalar in the yrange and xrange parameter:

gnuplot lrc lrs otv --with-lines --output=display --single-yaxis { set
title 'Confidence interval for Threshold'; set yrange [0:40]; }

I need that gnuplot uses the maximum and minimum of my series.

Thanks


Federico


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From cottrell@wfu.edu Tue Jun 28 09:45:43 2011
From: Cottrell, Allin <cottrell@wfu.edu>
To: gretl-users@gretlml.univpm.it
Subject: Re: [Gretl-users] yrange of gnuplot with scalar
Date: Tue, 28 Jun 2011 14:45:42 +0100
Message-ID: <BANLkTimGRrMP66KNzJT8XVd2MmW=EuibMg@mail.gmail.com>
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On Mon, Jun 27, 2011 at 2:55 PM, Federico Lampis UC3M
<flampis(a)emp.uc3m.es> wrote:
>
> is it possible to use some scalar in the commands of gnuplot? I have in
> my funcion a graph and it seems that  gnuplot does not allow to put
> scalar in the yrange and xrange parameter:
>
> gnuplot lrc lrs otv --with-lines --output=display --single-yaxis { set
> title 'Confidence interval for Threshold'; set yrange [0:40]; }
>
> I need that gnuplot uses the maximum and minimum of my series.

If I've understood your request correctly, the following script may help:

<script>
open data4-1
scalar x = max(price)
string foo
sprintf foo "%g", x
gnuplot price sqft {set yrange[0:@foo];} --output=display
</script>

The idea is to write your scalar value into a string, then use the "@"
mechanism for string-substitution inside your gnuplot "literal" block.

Gnuplot (of course) has its own mechanisms for dealing with scalar
variables, but it doesn't know anything about variables defined within
gretl. Hence the detour via strings.

Allin Cottrell


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From pindar@zedat.fu-berlin.de Tue Jun 28 16:32:01 2011
From: Leon Unger <pindar@zedat.fu-berlin.de>
To: gretl-users@gretlml.univpm.it
Subject: Re: [Gretl-users] yrange of gnuplot with scalar
Date: Tue, 28 Jun 2011 22:30:13 +0200
Message-ID: <FAB8B2C8-3844-40B4-B5B9-4ED81F1F3D2B@zedat.fu-berlin.de>
In-Reply-To: BANLkTimGRrMP66KNzJT8XVd2MmW=EuibMg@mail.gmail.com
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Thanks Allin!

That's good to know: I just was creating range frame scatter plots ( a la E. Tufte) via the literal plot. Without string substitution it's cumbersome ;-)

Cheers
Leon

Am 28.06.2011 um 15:45 schrieb "Cottrell, Allin" <cottrell(a)wfu.edu>:

> On Mon, Jun 27, 2011 at 2:55 PM, Federico Lampis UC3M
> <flampis(a)emp.uc3m.es> wrote:
>> 
>> is it possible to use some scalar in the commands of gnuplot? I have in
>> my funcion a graph and it seems that  gnuplot does not allow to put
>> scalar in the yrange and xrange parameter:
>> 
>> gnuplot lrc lrs otv --with-lines --output=display --single-yaxis { set
>> title 'Confidence interval for Threshold'; set yrange [0:40]; }
>> 
>> I need that gnuplot uses the maximum and minimum of my series.
> 
> If I've understood your request correctly, the following script may help:
> 
> <script>
> open data4-1
> scalar x = max(price)
> string foo
> sprintf foo "%g", x
> gnuplot price sqft {set yrange[0:@foo];} --output=display
> </script>
> 
> The idea is to write your scalar value into a string, then use the "@"
> mechanism for string-substitution inside your gnuplot "literal" block.
> 
> Gnuplot (of course) has its own mechanisms for dealing with scalar
> variables, but it doesn't know anything about variables defined within
> gretl. Hence the detour via strings.
> 
> Allin Cottrell
> 
> _______________________________________________
> Gretl-users mailing list
> Gretl-users(a)lists.wfu.edu
> http://lists.wfu.edu/mailman/listinfo/gretl-users


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From helioxentric@gmail.com Tue Jun 28 19:16:09 2011
From: =?utf-8?q?H=C3=A9lio?= Guilherme <helioxentric@gmail.com>
To: gretl-users@gretlml.univpm.it
Subject: Re: [Gretl-users] yrange of gnuplot with scalar
Date: Wed, 29 Jun 2011 00:16:03 +0100
Message-ID: <BANLkTi=Wh+cBm9_QoPDwS3zMNT21EevG5A@mail.gmail.com>
In-Reply-To: BANLkTimGRrMP66KNzJT8XVd2MmW=EuibMg@mail.gmail.com
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From cottrell@wfu.edu Tue Jun 28 19:34:18 2011
From: Cottrell, Allin <cottrell@wfu.edu>
To: gretl-users@gretlml.univpm.it
Subject: Re: [Gretl-users] yrange of gnuplot with scalar
Date: Wed, 29 Jun 2011 00:34:16 +0100
Message-ID: <BANLkTi=JVTn+sYX1ZB_UxkAbxsnNx0yOng@mail.gmail.com>
In-Reply-To: BANLkTi=Wh+cBm9_QoPDwS3zMNT21EevG5A@mail.gmail.com
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>> <script>
>> open data4-1
>> scalar x = max(price)
>> string foo
>> sprintf foo "%g", x
>> gnuplot price sqft {set yrange[0:@foo];} --output=display
>> </script>

2011/6/29 Hélio Guilherme <helioxentric(a)gmail.com>:
> Tested these commands, and the plot works OK, but gretl complaints about it.
> Appears a warning dialog box that the gnuplot command has failed ("Failed to
> parse gnuplot file").

To make the file parseable for the gretl GUI, insert a space after "yrange":

gnuplot price sqft {set yrange [0:@foo];} --output=display

Allin


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