[Therion] Therion Digest, Vol 126, Issue 5

[Bruce]

Sorry Dirk
I see I answered the wrong question!
It would be good to use tex variables in meta-post.
Could then create a North arrow with both grid and magnetic north, for
example.  I would like to know the answer also.
Bruce

-----Original Message-----
From: therion-bounces at speleo.sk [mailto:therion-bounces at speleo.sk] On Behalf
Of Dirk Peinelt
Sent: Monday, 6 June 2016 1:12 a.m.
To: therion at speleo.sk
Subject: Re: [Therion] Therion Digest, Vol 126, Issue 5

Hi Bruce,
what i mean is to use the values of the Therion Tex-variables in a MetaPost
symbol definition. To calculate some or to print it out. I don't no if there
is a special syntax to get them. 
dirk
----------------------------------------------------------------------

Message: 1
Date: Sat, 4 Jun 2016 13:05:12 +0200
From: "Dirk Peinelt" <dirk.peinelt at t-online.de>
Subject: [Therion] MetaPost/Tex: variable \magdecl
To: <therion at speleo.sk>
Message-ID: <003b01d1be50$f7c6b130$e7541390$@t-online.de>
Content-Type: text/plain; charset="us-ascii"

Is there a way to handle the content of the \magdecl TEX-variable in
METAPOST? (Therion V5.3.16)

In a string or numeric? - I think, i've an syntax problem.

 

1.) string handling:

string dec;

%dec:="3.022"; % FINE!

dec:=\magdecl; % ERROR

p_label.top(thTEX(dec),(0,0),0,8); % >> string output

 

2.) numeric handling:

numeric dec;

%dec:=3.022; % FINE!

dec:=\magdecl; % ERROR

p_label.top(thTEX(decimal dec),(0,0),0,8); % >> numeric to string output