Re: m-graph read data and plot

Re: m-graph read data and plot

[John Kitzmiller]

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On Aug 6, 2015, at 12:59 PM, Hans Hagen <pragma@wxs.nl <mailto:pragma@wxs.nl>> wrote:
> 
> On 8/6/2015 5:30 PM, John Kitzmiller wrote:
>> Given a file, data.d, containing 1 4 7
>> 
>> I expected the following code to draw a line from (4,1) to (7,1)…
>> 
>> 
>> \enabletrackers[metapost.showlog]
>> \usemodule[m-graph]
>> \startMPpage[instance=graph,offset=3mm]
>>   draw begingraph(5cm,5cm);
>>     gdata("data.d", v,
>>       for n = 1 upto 3:
>> a[n] = scantokens v[n];
>>       endfor;
>> 
>>       show a1; show a2; show a3; % numeric
>>       show v1; show v2; show v3; % string
>>       gdraw (a2,a1)—(a3,a1); % same problem in or out of data group
>>       );
>>   endgraph;
>> \stopMPpage
>> 
>> …the show lines return what I expected, but then come the complaints:
>> 
>> ! Inconsistent equation (off by 0.90000000000000002)…
>>>> (0,0,1,0,0,yypart S)
>> ! Transform components aren't all known…
>> 
> 
>> a[n] = scantokens v[n];
> 
> is a defined?

Thank you Hans. Do you mean numeric a[n]? It was not explicitly declared; I did not think it needed to be—the show commands write what I expect to the log—anyway, declaring a did not help.

> 
> also, use
> 
> a[n] := scantokens v[n] ;

Done. Still the same error messages and no pdf.

> 
> 
> 
>> My goal is to draw multiple box plots
>> https://en.wikipedia.org/wiki/Box_plot <https://en.wikipedia.org/wiki/Box_plot>, either vertical or horizontal,
>> from data sets, but I am stuck at this early stage.


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___________________________________________________________________________________

Re: m-graph read data and plot

[Alan BRASLAU]

You have two problems:

1) gdraw (4,1)--(7,1);
has a unique ordinate, so graph will fail in this case if you do not
explicitly set the range.

2) You have to take care with your choice of loop variables in MP not
to run into conflicts those eventually used in macros. Also, as Hans
indicated, you do need to declare that a is an array, as in
	numeric a[];

Here is a MWE

\enabletrackers[metapost.showlog]
\usemodule[graph]
\startMPpage[instance=graph,offset=3mm]
  draw begingraph(5cm,5cm);
    numeric a[];
    gdata("data.d", v,    
      for j=1 upto 3:
        a[j]:=scantokens v[j];
      endfor ;
      );

    setrange (whatever,0,whatever,2);
    gdraw (a2,a1)--(a3,a1);
  endgraph;
\stopMPpage


Alan


On Thu, 6 Aug 2015 16:48:51 -0400
John Kitzmiller <kitz@inradius.net> wrote:

> On Aug 6, 2015, at 12:59 PM, Hans Hagen <pragma@wxs.nl
> <mailto:pragma@wxs.nl>> wrote:
> > 
> > On 8/6/2015 5:30 PM, John Kitzmiller wrote:
> >> Given a file, data.d, containing 1 4 7
> >> 
> >> I expected the following code to draw a line from (4,1) to (7,1)…
> >> 
> >> 
> >> \enabletrackers[metapost.showlog]
> >> \usemodule[m-graph]
> >> \startMPpage[instance=graph,offset=3mm]
> >>   draw begingraph(5cm,5cm);
> >>     gdata("data.d", v,
> >>       for n = 1 upto 3:
> >> a[n] = scantokens v[n];
> >>       endfor;
> >> 
> >>       show a1; show a2; show a3; % numeric
> >>       show v1; show v2; show v3; % string
> >>       gdraw (a2,a1)—(a3,a1); % same problem in or out of data group
> >>       );
> >>   endgraph;
> >> \stopMPpage
> >> 
> >> …the show lines return what I expected, but then come the
> >> complaints:
> >> 
> >> ! Inconsistent equation (off by 0.90000000000000002)…
> >>>> (0,0,1,0,0,yypart S)
> >> ! Transform components aren't all known…
> >> 
> > 
> >> a[n] = scantokens v[n];
> > 
> > is a defined?
> 
> Thank you Hans. Do you mean numeric a[n]? It was not explicitly
> declared; I did not think it needed to be—the show commands write
> what I expect to the log—anyway, declaring a did not help.
> 
> > 
> > also, use
> > 
> > a[n] := scantokens v[n] ;
> 
> Done. Still the same error messages and no pdf.
> 
> > 
> > 
> > 
> >> My goal is to draw multiple box plots
> >> https://en.wikipedia.org/wiki/Box_plot
> >> <https://en.wikipedia.org/wiki/Box_plot>, either vertical or
> >> horizontal, from data sets, but I am stuck at this early stage.
> 



-- 
Alan Braslau
CEA DSM-IRAMIS-SPEC
CNRS UMR 3680
Orme des Merisiers
91191 Gif-sur-Yvette cedex FRANCE
tel: +33 1 69 08 73 15
fax: +33 1 69 08 87 86
mailto:alan.braslau@cea.fr
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: m-graph read data and plot

[John Kitzmiller]

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Thank you Alan. setrange is the key I had not tried and I will be more careful with (2).

This may not be the proper way to ask, but it is related to the topic: how to get Hobby’s Figure 9 from the mpgraph manual to work using m-graph?

http://ctan.org/tex-archive/systems/doc/metapost/source-manual <http://ctan.org/tex-archive/systems/doc/metapost/source-manual>

Thanks again,
John


On Aug 7, 2015, at 6:23 AM, Alan BRASLAU <alan.braslau@cea.fr> wrote:
> 
> You have two problems:
> 
> 1) gdraw (4,1)--(7,1);
> has a unique ordinate, so graph will fail in this case if you do not
> explicitly set the range.
> 
> 2) You have to take care with your choice of loop variables in MP not
> to run into conflicts those eventually used in macros. Also, as Hans
> indicated, you do need to declare that a is an array, as in
> 	numeric a[];
> 
> Here is a MWE
> 
> \enabletrackers[metapost.showlog]
> \usemodule[graph]
> \startMPpage[instance=graph,offset=3mm]
>  draw begingraph(5cm,5cm);
>    numeric a[];
>    gdata("data.d", v,    
>      for j=1 upto 3:
>        a[j]:=scantokens v[j];
>      endfor ;
>      );
> 
>    setrange (whatever,0,whatever,2);
>    gdraw (a2,a1)--(a3,a1);
>  endgraph;
> \stopMPpage
> 
> 
> Alan
> 
> 
> On Thu, 6 Aug 2015 16:48:51 -0400
> John Kitzmiller <kitz@inradius.net <mailto:kitz@inradius.net>> wrote:
> 
>> On Aug 6, 2015, at 12:59 PM, Hans Hagen <pragma@wxs.nl <mailto:pragma@wxs.nl>
>> <mailto:pragma@wxs.nl <mailto:pragma@wxs.nl>>> wrote:
>>> 
>>> On 8/6/2015 5:30 PM, John Kitzmiller wrote:
>>>> Given a file, data.d, containing 1 4 7
>>>> 
>>>> I expected the following code to draw a line from (4,1) to (7,1)…
>>>> 
>>>> 
>>>> \enabletrackers[metapost.showlog]
>>>> \usemodule[m-graph]
>>>> \startMPpage[instance=graph,offset=3mm]
>>>>  draw begingraph(5cm,5cm);
>>>>    gdata("data.d", v,
>>>>      for n = 1 upto 3:
>>>> a[n] = scantokens v[n];
>>>>      endfor;
>>>> 
>>>>      show a1; show a2; show a3; % numeric
>>>>      show v1; show v2; show v3; % string
>>>>      gdraw (a2,a1)—(a3,a1); % same problem in or out of data group
>>>>      );
>>>>  endgraph;
>>>> \stopMPpage
>>>> 
>>>> …the show lines return what I expected, but then come the
>>>> complaints:
>>>> 
>>>> ! Inconsistent equation (off by 0.90000000000000002)…
>>>>>> (0,0,1,0,0,yypart S)
>>>> ! Transform components aren't all known…
>>>> 
>>> 
>>>> a[n] = scantokens v[n];
>>> 
>>> is a defined?
>> 
>> Thank you Hans. Do you mean numeric a[n]? It was not explicitly
>> declared; I did not think it needed to be—the show commands write
>> what I expect to the log—anyway, declaring a did not help.
>> 
>>> 
>>> also, use
>>> 
>>> a[n] := scantokens v[n] ;
>> 
>> Done. Still the same error messages and no pdf.
>> 
>>> 
>>> 
>>> 
>>>> My goal is to draw multiple box plots
>>>> https://en.wikipedia.org/wiki/Box_plot <https://en.wikipedia.org/wiki/Box_plot>
>>>> <https://en.wikipedia.org/wiki/Box_plot <https://en.wikipedia.org/wiki/Box_plot>>, either vertical or
>>>> horizontal, from data sets, but I am stuck at this early stage.
>> 
> 


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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________

Re: m-graph read data and plot

[Alan BRASLAU]

On Fri, 7 Aug 2015 13:00:47 -0400
John Kitzmiller <kitz@inradius.net> wrote:

> Thank you Alan. setrange is the key I had not tried and I will be
> more careful with (2).
> 
> This may not be the proper way to ask, but it is related to the
> topic: how to get Hobby’s Figure 9 from the mpgraph manual to work
> using m-graph?
> 
> http://ctan.org/tex-archive/systems/doc/metapost/source-manual
> <http://ctan.org/tex-archive/systems/doc/metapost/source-manual>
> 
> Thanks again,
> John

\usemodule [graph]

\startMPpage [instance=graph]

draw begingraph(3in,2in);
  glabel.lft(btex \vbox{\hbox{Quadrillions}\hbox{of BTU}} etex, OUT);
  path p[];
  numeric t;
  gdata("energy.d", $,
    t:=0; augment.p1($1,0);
    for j=2 upto 5:
    t:=t+scantokens $[j]; augment.p[j]($1,t);
    endfor)
  picture lab[];
  lab2=btex coal etex; lab3=btex crude oil etex;
  lab4=btex natural gas etex; lab5=btex hydroelectric etex;
  for j=5 downto 2:
  gfill p[j]--reverse p[j-1]--cycle withcolor .16j*white;
  glabel.lft(image(unfill bbox lab[j]; draw lab[j]), .7+length p[j]);
  endfor
endgraph;
closefrom "energy.d" ;

\stopMPpage



One needs to think about closing the data file as ConTeXt opens a single
MP instance that is run throughout the entire document AND over its
multiple runs. If the file is left open, a second run will try to read
on from the point where it left off.

THIS IS A SUBTLE POINT THAT SHOULD BE NOTICED BY ALL MPLIB USERS!

Alan
-- 
Alan Braslau
CEA DSM-IRAMIS-SPEC
CNRS UMR 3680
Orme des Merisiers
91191 Gif-sur-Yvette cedex FRANCE
tel: +33 1 69 08 73 15
fax: +33 1 69 08 87 86
mailto:alan.braslau@cea.fr
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: m-graph read data and plot

[John Kitzmiller]

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On Aug 9, 2015, at 8:38 AM, Alan BRASLAU <alan.braslau@cea.fr> wrote:
> 
> One needs to think about closing the data file as ConTeXt opens a single
> MP instance that is run throughout the entire document AND over its
> multiple runs. If the file is left open, a second run will try to read
> on from the point where it left off.
> 
> THIS IS A SUBTLE POINT THAT SHOULD BE NOTICED BY ALL MPLIB USERS!

Thank you for this insight Alan! Two results immediately helpful are:
1) data can be put at the top of the .tex file
2) autogrids can be rendered and then drawn over

The following may not be the best way, but it works to read data from the top of the .tex file and then plot on the autogrid.

% 1 0.5 2.5
% 2 1 3.5

\usemodule[graph]
\startMPpage[instance=graph,offset=2mm]
  draw begingraph(3cm,5cm);
  numeric a[];
    gdata("read1.tex", v,
      setrange(0,0,3,4);
    );
    closefrom "read1.tex";

    autogrid(,grid.lft) withcolor .7white;

    gdata("read1.tex",v,
    for j = 1 upto 3:
        a[j] := scantokens v[j];
      endfor;
      path b;
      augment.b(a1,a2);
      augment.b(a1,a3);
      setrange(0,0,3,4);
      gdraw b;
    );
    closefrom "read1.tex";
  endgraph;
\stopMPpage



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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: m-graph read data and plot

[Hans Hagen]

On 8/13/2015 9:37 PM, John Kitzmiller wrote:
> On Aug 9, 2015, at 8:38 AM, Alan BRASLAU <alan.braslau@cea.fr
> <mailto:alan.braslau@cea.fr>> wrote:
>>
>> One needs to think about closing the data file as ConTeXt opens a single
>> MP instance that is run throughout the entire document AND over its
>> multiple runs. If the file is left open, a second run will try to read
>> on from the point where it left off.
>>
>> THIS IS A SUBTLE POINT THAT SHOULD BE NOTICED BY ALL MPLIB USERS!

one can also start with:

graph_close_file := true ;

which will close files after drawing

> Thank you for this insight Alan! Two results immediately helpful are:
> 1) data can be put at the top of the .tex file
> 2) autogrids can be rendered and then drawn over
>
> The following may not be the best way, but it works to read data from
> the top of the .tex file and then plot on the autogrid.
>
> % 1 0.5 2.5
> % 2 1 3.5
>
> \usemodule[graph]
> \startMPpage[instance=graph,offset=2mm]
>    draw begingraph(3cm,5cm);
>    numeric a[];
>      gdata("read1.tex", v,
>        setrange(0,0,3,4);
>      );
>      closefrom "read1.tex";
>
>      autogrid(,grid.lft) withcolor .7white;
>
>      gdata("read1.tex",v,
>      for j = 1 upto 3:
>          a[j] := scantokens v[j];
>        endfor;
>        path b;
>        augment.b(a1,a2);
>        augment.b(a1,a3);
>        setrange(0,0,3,4);
>        gdraw b;
>      );
>      closefrom "read1.tex";
>    endgraph;
> \stopMPpage
>
>
>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive  : http://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________
>


-- 

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
     tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: m-graph read data and plot

[Hans Hagen]

On 8/13/2015 9:37 PM, John Kitzmiller wrote:
> On Aug 9, 2015, at 8:38 AM, Alan BRASLAU <alan.braslau@cea.fr
> <mailto:alan.braslau@cea.fr>> wrote:
>>
>> One needs to think about closing the data file as ConTeXt opens a single
>> MP instance that is run throughout the entire document AND over its
>> multiple runs. If the file is left open, a second run will try to read
>> on from the point where it left off.
>>
>> THIS IS A SUBTLE POINT THAT SHOULD BE NOTICED BY ALL MPLIB USERS!
>
> Thank you for this insight Alan! Two results immediately helpful are:
> 1) data can be put at the top of the .tex file
> 2) autogrids can be rendered and then drawn over
>
> The following may not be the best way, but it works to read data from
> the top of the .tex file and then plot on the autogrid.
>
> % 1 0.5 2.5
> % 2 1 3.5
>
> \usemodule[graph]
> \startMPpage[instance=graph,offset=2mm]
>    draw begingraph(3cm,5cm);
>    numeric a[];
>      gdata("read1.tex", v,
>        setrange(0,0,3,4);
>      );
>      closefrom "read1.tex";
>
>      autogrid(,grid.lft) withcolor .7white;
>
>      gdata("read1.tex",v,
>      for j = 1 upto 3:
>          a[j] := scantokens v[j];
>        endfor;
>        path b;
>        augment.b(a1,a2);
>        augment.b(a1,a3);
>        setrange(0,0,3,4);
>        gdraw b;
>      );
>      closefrom "read1.tex";
>    endgraph;
> \stopMPpage

an apetizer:

\usemodule[graph]

\startluacode
     local d = nil
     function MP.set(data)
         d = data
     end
     function MP.n()
         mp.print(d and #d or 0)
     end
     function MP.get(i,j)
         mp.print(d and d[i] and d[i][j] or 0)
     end
\stopluacode

\startluacode
     MP.set {
         { 1, 0.5, 2.5 },
         { 2, 1.0, 3.5 },
     }
\stopluacode

\startMPpage[instance=graph,offset=2mm]
draw begingraph(3cm,5cm);
     numeric a[];
     for j = 1 upto MP.n() :
         path b;
         augment.b(MP.get(j,1),MP.get(j,2));
         augment.b(MP.get(j,1),MP.get(j,3));
         setrange(0,0,3,4);
         gdraw b;
         endfor ;
endgraph ;
\stopMPpage




-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
     tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: m-graph read data and plot

[Alan BRASLAU]

On Thu, 13 Aug 2015 22:31:23 +0200
Hans Hagen <pragma@wxs.nl> wrote:

> an apetizer:
> 
> \usemodule[graph]
> 
> \startluacode

No such juicy appetizers except for those who will be attending the
ConTeXt meeting!

Alan
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: m-graph read data and plot

[Hans Hagen]

On 8/14/2015 4:39 AM, Alan BRASLAU wrote:
> On Thu, 13 Aug 2015 22:31:23 +0200
> Hans Hagen <pragma@wxs.nl> wrote:
>
>> an apetizer:
>>
>> \usemodule[graph]
>>
>> \startluacode
>
> No such juicy appetizers except for those who will be attending the
> ConTeXt meeting!

ok, a temporary embargo on neat tricks then

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
     tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: m-graph read data and plot

[Hans Hagen]

On 8/6/2015 5:30 PM, John Kitzmiller wrote:
> Given a file, data.d, containing 1 4 7
>
> I expected the following code to draw a line from (4,1) to (7,1)…
>
>
> \enabletrackers[metapost.showlog]
> \usemodule[m-graph]
> \startMPpage[instance=graph,offset=3mm]
>    draw begingraph(5cm,5cm);
>      gdata("data.d", v,
>        for n = 1 upto 3:
> a[n] = scantokens v[n];
>        endfor;
>
>        show a1; show a2; show a3; % numeric
>        show v1; show v2; show v3; % string
>        gdraw (a2,a1)—(a3,a1); % same problem in or out of data group
>        );
>    endgraph;
> \stopMPpage
>
> …the show lines return what I expected, but then come the complaints:
>
> ! Inconsistent equation (off by 0.90000000000000002)…
>  >> (0,0,1,0,0,yypart S)
> ! Transform components aren't all known…
>

 > a[n] = scantokens v[n];

is a defined?

also, use

a[n] := scantokens v[n] ;



> My goal is to draw multiple box plots
> https://en.wikipedia.org/wiki/Box_plot, either vertical or horizontal,
> from data sets, but I am stuck at this early stage.
>
>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive  : http://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________
>


-- 

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
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m-graph read data and plot

[John Kitzmiller]

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Given a file, data.d, containing 1 4 7

I expected the following code to draw a line from (4,1) to (7,1)…


\enabletrackers[metapost.showlog]
\usemodule[m-graph]
\startMPpage[instance=graph,offset=3mm]
  draw begingraph(5cm,5cm);
    gdata("data.d", v,    
      for n = 1 upto 3:
      	a[n] = scantokens v[n];
      endfor;

      show a1; show a2; show a3; % numeric
      show v1; show v2; show v3; % string
      
      gdraw (a2,a1)—(a3,a1); % same problem in or out of data group
      );
  endgraph;
\stopMPpage

…the show lines return what I expected, but then come the complaints:

! Inconsistent equation (off by 0.90000000000000002)…
>> (0,0,1,0,0,yypart S)
! Transform components aren't all known…


My goal is to draw multiple box plots https://en.wikipedia.org/wiki/Box_plot <https://en.wikipedia.org/wiki/Box_plot>, either vertical or horizontal, from data sets, but I am stuck at this early stage. 


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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
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