Re: [NTG-context] Axis macro in MetaFun
On Saturday, September 11, 2021 10:30:25 PM IST Hans Hagen wrote:
> On 9/11/2021 4:27 PM, kauśika cittūr via ntg-context wrote:
> > Dear All,
> >
> > I am truly grateful for the new additions to MetaFun. It has greatly
> > helped me in producing neat drawings for my academic work. In this
> > connection, I have a few queries.
> >
> > Currently I am using PGFPlots (with ConTeXt) to draw simple plots from CSV
> > data. I was wondering if there is any way to do the same in MetaFuns. That
> > is, is it possible to do something like the following in order to obtain
> > a line plot of the values in the 'data.csv' file? Also is it possible to
> > have the 'labels' be the identical for all points in a given list?
> >
> > \startMPcode
> >
> >draw lmt_axis [
> >
> >sx = 2mm, sy = 2mm,
> >nx = 80, ny = 40,
> >tx = 15, ty = 15,
> >
> >list = {
> >
> > [
> >
> >connect = true,
> >color = "darkblue",
> >close = true,
> >points = {data.csv},
> >labels = {"•"},
> >
> > ]
> >
> >},
> >
> >] withpen pencircle scaled 0.5mm;
> >
> > \stopMPcode
>
> It depends on how one has data in the csv, You can patch mlib-scn.lmt
> (line 659)
>
> if type(v) == "table" then
> return injectpath(v,connector,close)
> elseif type(v) == "string" then
> local code = load("return " .. v)
> if code then
> return code()
> end
> else
> return injectpair(0,0)
> end
>
> then a string represents a function:
>
> \starttext
>
> \startluacode
> io.savedata("temp.csv", "x,y\n10,10\n20,40\n30,30\n")
>
> local mycsvsplitter = utilities.parsers.rfc4180splitter()
>
> function MP.MyPoints(name)
> local data = io.loaddata(name)
> local list = mycsvsplitter(data)
> table.remove(list,1)
> for i=1,#list do
> list[i][1] = tonumber(list[i][1])
> list[i][2] = tonumber(list[i][2])
> end
> mp.inject.path(list)
> end
>
> \stopluacode
>
> \startMPcode
>draw lmt_axis [
>sx = 2mm, sy = 2mm,
>nx = 80, ny = 40,
>tx = 15, ty = 15,
>
>list = {
> [
>connect = true,
>color = "darkblue",
>close = true,
>points = "MP.MyPoints('temp.csv')",
>labels = {"•"},
> ]
>},
>] withpen pencircle scaled 0.5mm;
> \stopMPcode
>
> \stoptext
>
> we can of course have some predefined and when we can agree on how these
> files loo, adding a "csv" is no big deal ... it's all about consistent
> interfacing
>
>
> -
>Hans Hagen | PRAGMA ADE
>Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
> tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
> -
Dear Hans,
Many thanks for your detailed guidance. I think for now this patch should
suffice for my simple needs.
Best,
kauśika
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Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
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Re: [NTG-context] Axis macro in MetaFun
On 9/11/2021 4:27 PM, kauśika cittūr via ntg-context wrote:
Dear All,
I am truly grateful for the new additions to MetaFun. It has greatly helped me
in producing neat drawings for my academic work. In this connection, I have a
few queries.
Currently I am using PGFPlots (with ConTeXt) to draw simple plots from CSV
data. I was wondering if there is any way to do the same in MetaFuns. That is,
is it possible to do something like the following in order to obtain a line
plot of the values in the 'data.csv' file? Also is it possible to have the
'labels' be the identical for all points in a given list?
\startMPcode
draw lmt_axis [
sx = 2mm, sy = 2mm,
nx = 80, ny = 40,
tx = 15, ty = 15,
list = {
[
connect = true,
color = "darkblue",
close = true,
points = {data.csv},
labels = {"•"},
]
},
] withpen pencircle scaled 0.5mm;
\stopMPcode
It depends on how one has data in the csv, You can patch mlib-scn.lmt
(line 659)
if type(v) == "table" then
return injectpath(v,connector,close)
elseif type(v) == "string" then
local code = load("return " .. v)
if code then
return code()
end
else
return injectpair(0,0)
end
then a string represents a function:
\starttext
\startluacode
io.savedata("temp.csv", "x,y\n10,10\n20,40\n30,30\n")
local mycsvsplitter = utilities.parsers.rfc4180splitter()
function MP.MyPoints(name)
local data = io.loaddata(name)
local list = mycsvsplitter(data)
table.remove(list,1)
for i=1,#list do
list[i][1] = tonumber(list[i][1])
list[i][2] = tonumber(list[i][2])
end
mp.inject.path(list)
end
\stopluacode
\startMPcode
draw lmt_axis [
sx = 2mm, sy = 2mm,
nx = 80, ny = 40,
tx = 15, ty = 15,
list = {
[
connect = true,
color = "darkblue",
close = true,
points = "MP.MyPoints('temp.csv')",
labels = {"•"},
]
},
] withpen pencircle scaled 0.5mm;
\stopMPcode
\stoptext
we can of course have some predefined and when we can agree on how these
files loo, adding a "csv" is no big deal ... it's all about consistent
interfacing
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | 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://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___
Re: [NTG-context] Axis macro in MetaFun
On 9/11/2021 4:27 PM, kauśika cittūr via ntg-context wrote: My final query: is it possible to specify a co-ordinate transform for any/all of the axes? For instance in my work, I would like to plot the y-axis in the log-scale. Alan is working on that when he is in distraction mode ... we have done some preparations already. Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | 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://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___
[NTG-context] Axis macro in MetaFun
Dear All,
I am truly grateful for the new additions to MetaFun. It has greatly helped me
in producing neat drawings for my academic work. In this connection, I have a
few queries.
Currently I am using PGFPlots (with ConTeXt) to draw simple plots from CSV
data. I was wondering if there is any way to do the same in MetaFuns. That is,
is it possible to do something like the following in order to obtain a line
plot of the values in the 'data.csv' file? Also is it possible to have the
'labels' be the identical for all points in a given list?
\startMPcode
draw lmt_axis [
sx = 2mm, sy = 2mm,
nx = 80, ny = 40,
tx = 15, ty = 15,
list = {
[
connect = true,
color = "darkblue",
close = true,
points = {data.csv},
labels = {"•"},
]
},
] withpen pencircle scaled 0.5mm;
\stopMPcode
My final query: is it possible to specify a co-ordinate transform for any/all
of the axes? For instance in my work, I would like to plot the y-axis in the
log-scale.
Thanks,
kauśika
___
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://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___
