Re: [NTG-context] Pgfplots - "reverse legend" by Lua

2015-12-24 Thread Lukáš Procházka 

Hello,

On Tue, 22 Dec 2015 18:21:01 +0100, Hans Hagen  wrote:


t = {["legend entries"]="{Cos,Sin2,Sin}", "reverse legend"}


such a table is valid lua (mixture of indexed and hashed) but of course
the application using it has to know how to use it


OK, so when '{["legend entries"]="{Cos,Sin2,Sin}", "reverse legend"}' is a 
valid Lua call and, what I guess, a valid Lua-to-context call -
- why the code doesn't work?

I also tried Aditya's way II - to build the "command-string" and to pass it to 
context:

"
  context(string.format("\\startaxis[legend entries={%s},reverse legend]", 
"Sin,Cos"))
"

It works, although I'd rather use "context.startaxis{...options...}" style as it looks 
"nicer".

Next question - why

"
  context[[\startaxis]]
"

doesn't work, whilst

  context"\\startaxis"

does?

(See attached files.)

Best regards,

Lukas


Hans


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Re: [NTG-context] Pgfplots - "reverse legend" by Lua

2015-12-22 Thread Aditya Mahajan 

On Tue, 22 Dec 2015, Hans Hagen wrote:


On 12/22/2015 5:36 PM, Aditya Mahajan wrote:

 On Tue, 22 Dec 2015, Procházka Lukáš Ing. - Pontex s. r. o. wrote:
> 
>  \starttikzpicture

> %\startaxis[legend entries={Cos,Sin2,Sin},reverse legend]
> \cldcommand{startaxis{["legend entries"] = "{Cos,Sin2,Sin}", "reverse
> legend"}}

 This is not valid lua. On a lua prompt, try

>

 t = {["legend entries"]="{Cos,Sin2,Sin}", "reverse legend"}


You are right. Sorry for the noise.

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Re: [NTG-context] Pgfplots - "reverse legend" by Lua

2015-12-22 Thread Hans Hagen 

On 12/22/2015 5:36 PM, Aditya Mahajan wrote:

On Tue, 22 Dec 2015, Procházka Lukáš Ing. - Pontex s. r. o. wrote:


\starttikzpicture
   %\startaxis[legend entries={Cos,Sin2,Sin},reverse legend]
   \cldcommand{startaxis{["legend entries"] = "{Cos,Sin2,Sin}", "reverse
   legend"}}


This is not valid lua. On a lua prompt, try

 >

t = {["legend entries"]="{Cos,Sin2,Sin}", "reverse legend"}


such a table is valid lua (mixture of indexed and hashed) but of course 
the application using it has to know how to use it


Hans



-
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  Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
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 | www.pragma-pod.nl
-
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Re: [NTG-context] Pgfplots - "reverse legend" by Lua

2015-12-22 Thread Aditya Mahajan 

On Tue, 22 Dec 2015, Procházka Lukáš Ing. - Pontex s. r. o. wrote:


\starttikzpicture
   %\startaxis[legend entries={Cos,Sin2,Sin},reverse legend]
   \cldcommand{startaxis{["legend entries"] = "{Cos,Sin2,Sin}", "reverse
   legend"}}


This is not valid lua. On a lua prompt, try


t = {["legend entries"]="{Cos,Sin2,Sin}", "reverse legend"}

you get

stdin:1: table index is nil
stack traceback:
stdin:1: in main chunk
[C]: in ?

One can define a lua table using

{[key]=value, [key]=value, ... } etc

or

{value1, value2, ...} etc.

Mixing the two is not allowed.

In ConTeXt, the two are not mixed. But tikz (and pgfplot) freely mix the 
two syntax. So, one way to get the result using lua is (untested)


\ctxlua{"\\startaxis[legend entries={Cos,Sin2,Sin}, reverse legend]"}

where, if needed, you can build the string using string.format.

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[NTG-context] Pgfplots - "reverse legend" by Lua

2015-12-21 Thread Procházka Lukáš Ing . - Pontex s . r . o . 

Hello,

one more question about pgfplots & Lua:

how to specify "reverse legend" by Lua?

Here are some examples:

- Plot 1 contains no Lua code and gives the desired result (OK);
- Plot 2 uses Lua to specify "legend entries" successfully (OK);
- Plot 3 tries to use Lua to specify "reverese legend", but doesn't work;


\usemodule[pgfplots]

\starttext
  Plot 1 -- OK

  \starttikzpicture
\startaxis[legend entries={Cos,Sin2,Sin},reverse legend]
  \addplot+[mark=none,fill,green]{cos(deg(x))}\closedcycle;
  \addplot+[mark=none,fill,yellow]{0.5*sin(deg(0.5*x))}\closedcycle;
  \addplot+[mark=none,]{sin(deg(x))}\closedcycle;
\stopaxis
  \stoptikzpicture

  Plot 2 -- Legend by Lua -- OK

  \starttikzpicture
%\startaxis[legend entries={Cos,Sin2,Sin}]
\cldcommand{startaxis{["legend entries"] = "{Cos,Sin2,Sin}"}}
  \addplot+[mark=none,fill,green]{cos(deg(x))}\closedcycle;
  \addplot+[mark=none,fill,yellow]{0.5*sin(deg(0.5*x))}\closedcycle;
  \addplot+[mark=none,]{sin(deg(x))}\closedcycle;
\stopaxis
  \stoptikzpicture

  Plot 3 -- Reverse legend by Lua -- not working

  \starttikzpicture
%\startaxis[legend entries={Cos,Sin2,Sin},reverse legend]
\cldcommand{startaxis{["legend entries"] = "{Cos,Sin2,Sin}", "reverse 
legend"}}
  \addplot+[mark=none,fill,green]{cos(deg(x))}\closedcycle;
  \addplot+[mark=none,fill,yellow]{0.5*sin(deg(0.5*x))}\closedcycle;
  \addplot+[mark=none,]{sin(deg(x))}\closedcycle;
\stopaxis
  \stoptikzpicture
\stoptext


So how to make Plot 3 work?

Best regards,

Lukas


--
Ing. Lukáš Procházka | mailto:l...@pontex.cz
Pontex s. r. o.  | mailto:pon...@pontex.cz | http://www.pontex.cz
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Tel: +420 241 096 751
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