Re: [NTG-context] m-graph read data and plot

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John Kitzmiller

6 Aug 2015 6 Aug '15

2:48 p.m.

On Aug 6, 2015, at 12:59 PM, Hans Hagen 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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Alan BRASLAU

7 Aug 7 Aug

4:23 a.m.

New subject: m-graph read data and plot

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 wrote:

...

On Aug 6, 2015, at 12:59 PM, Hans Hagen 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

John Kitzmiller

11 a.m.

New subject: m-graph read data and plot

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 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 mailto:kitz@inradius.net> wrote:

...
On Aug 6, 2015, at 12:59 PM, Hans Hagen 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.

Alan BRASLAU

9 Aug 9 Aug

6:38 a.m.

New subject: m-graph read data and plot

On Fri, 7 Aug 2015 13:00:47 -0400 John Kitzmiller 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

John Kitzmiller

13 Aug 13 Aug

1:37 p.m.

New subject: m-graph read data and plot

On Aug 9, 2015, at 8:38 AM, Alan BRASLAU 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

Hans Hagen

1:57 p.m.

New subject: m-graph read data and plot

On 8/13/2015 9:37 PM, John Kitzmiller wrote:

...

On Aug 9, 2015, at 8:38 AM, Alan BRASLAU 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

2:31 p.m.

New subject: m-graph read data and plot

On 8/13/2015 9:37 PM, John Kitzmiller wrote:

...

On Aug 9, 2015, at 8:38 AM, Alan BRASLAU 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 -----------------------------------------------------------------

Alan BRASLAU

8:39 p.m.

New subject: m-graph read data and plot

On Thu, 13 Aug 2015 22:31:23 +0200 Hans Hagen wrote:

...

an apetizer:

\usemodule[graph]

\startluacode

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

Hans Hagen

21 Aug 21 Aug

8:46 a.m.

New subject: m-graph read data and plot

On 8/14/2015 4:39 AM, Alan BRASLAU wrote:

...

On Thu, 13 Aug 2015 22:31:23 +0200 Hans Hagen 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 -----------------------------------------------------------------

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Alan BRASLAU
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John Kitzmiller