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
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 -----------------------------------------------------------------
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 -----------------------------------------------------------------
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
participants (2)
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Hans Hagen -
kauśika cittūr