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Javascript Definition:
Overview:
A planck-HFI reqirement is that kst support scripting to allow flexable
generation of complex plots. We plan to use JavaScript as excellent
facilities for this exist within KDE.
Requirements:
- Complete bindings to all objects
- everything that can be done in a .kst file can be done with a
javascript
- DCOP based commandline tool with konsole
- will provide a 'command line' to kst (like sm or idl)
- Can be commanded from either an embedded konsole, or an external
konsole.
- Multiple ways of entering scripts
- from command line when starting kst
eg: kst -J "file=\"data.dat\";field=\"N15C2\"" bolo.js
- From file menue
- From DCOP/command line tool.
- We will not use automatic bindings. Instead, we will "ideal" bindings
and implement them as internal calls to our internal objects
- The update thread doesn't run if the interpreter is running, and blocks the
interpreter from starting up during an update There will be a force
update/repaint mechanism to allow updates during script interpretation.
- vectors can be referenced as strings (tagname) everywhere too
Open Questions:
- kjsembed or qsa?
Examples:
A plot with points + error bars, and a line fit.
The X axis vector has to be re-scaled.
var f = new DataSource("Data.dat");
if (!f) {
alert("error");
}
var Vx = new DataVector(f, "1");
string Vn = (new DataVector(f, "2", start, end)).tagName();
var Vp = new DataVector(f, "3", start, end, skip);
var Vm = new DataVector(f, "4", start, end, skip, ave);
// After here is unimplemented so far
var Ex = Equation("[" + Vx.tag + "] * 0.0042", Vx);
var C = Curve(Ex.sv, Vn);
C.hasPoint = true;
C.hasLines = false;
C.setYError(Vp, Vm);
C.setPointType(6);.
var lfit = fit("kstfit_linear_unweighted", Ex.sv, Vn);
var Cf = Curve(Ex.sv, lfit.Y_Fitted);
var P = Plot();
P.addCurve(C); // ordering etc............. P.curves.append() etc?
P.addCurve(Cf);
P.xLabel.text = "x axis";
P.yLabel.text = "y axis";
L = PlotLabel(lfit.parameterstring);
L.setPos(0.2, 0.8);
P.addLabel(L);
Window().addPlot(P);
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