gnuplot-gen.hpp File Reference

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Description

Preconfigured setup for data visualisation with Gnuplot.

The visualisation tool gnuplot allows for simple data visualisation in various formats, integrated into a *NIX commandline work environment.

The namespace lib::gnuplot_gen allows to generate diagrams relying on some common layout schemes, which can be customised. Data is passed in as CSV string; the generated Gnuplot script adapts dynamically to the number of data columns given, where the first column always holds the common x-axis values. Additional parameters can be added to the data binding used for script generation; this binding is comprised of key = value settings in a Rec<GenNode> (Lumiera's »ETD« format for structural data)

Todo:

3/2024 this is an initial draft, shaped by the immediate need to visualise measurement data collected while testing the new Scheduler implementation.

See also

GnuplotGen_test

SchedulerStress_test

text-template.hpp

Definition in file gnuplot-gen.hpp.

#include "lib/stat/csv.hpp"
#include "lib/format-util.hpp"
#include "lib/diff/gen-node.hpp"
#include <string>
#include <vector>
#include <tuple>

Typedefs
using	ParamRecord = diff::Rec::Mutator
	< preconfigured setup for Gnuplot data visualisation

Functions
string	dataPlot (string csvData)
string	dataPlot (ParamRecord)
	Generate a Gnuplot diagram to visualise the given data points. More...
string	scatterRegression (string csvData)
string	scatterRegression (ParamRecord)
	Generate a (X,Y)-scatter plot with regression line. More...

Variables
const string	KEY_CSVData = "CSVData"
const string	KEY_DiagramKind = "DiagramKind"
const string	KEY_RegrSlope = "RegrSlope"
const string	KEY_RegrSocket = "RegrSocket"
const string	KEY_Term = "Term"
const string	KEY_TermSize = "TermSize"
const string	KEY_Xlabel = "Xlabel"
const string	KEY_Xrange = "Xrange"
const string	KEY_Xtics = "Xtics"
const string	KEY_Y2label = "Y2label"
const string	KEY_Y2range = "Y2range"
const string	KEY_Y3label = "Y3label"
const string	KEY_Y3range = "Y3range"
const string	KEY_Ylabel = "Ylabel"
const string	KEY_Yrange = "Yrange"

Namespaces
	lib
	Implementation namespace for support and library code.

Function Documentation

dataPlot()

string dataPlot

(

ParamRecord

params

)

Generate a Gnuplot diagram to visualise the given data points.

Remarks

each column of the given data is featured as sequence over the first column interpreted as common abscissa. The name of the abscissa and the row names in the legend are extracted from the header names expected in the first row of CSV data.

Definition at line 241 of file gnuplot-gen.cpp.

References lib::gnuplot_gen::dataPlot().

Referenced by lib::gnuplot_gen::dataPlot().

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scatterRegression()

string scatterRegression

(

ParamRecord

params

)

Generate a (X,Y)-scatter plot with regression line.

Remarks

the layout of this diagram differs, based on the given number of data columns. The main measurement data is expected in columns [1:2] and showed in the primary display, adding a regression line. When further columns are given, a multiplot layout is established, showing those additional related series in a second diagram below. It may be necessary to define a larger canvas with different aspect ratio, which is possibly using the placeholder #KEY_TermSize

Definition at line 265 of file gnuplot-gen.cpp.

References lib::gnuplot_gen::scatterRegression().

Referenced by lib::gnuplot_gen::scatterRegression().

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