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11.131 Sample ‘tens’ ¶

Function tens is variant of plot with smooth coloring along the curves. At this, color is determined as for surfaces (see Цветовая схема).

MGL code:

call 'prepare1d'
subplot 2 2 0 '':title 'Tens plot (default)':box:tens y(:,0) y(:,1)
subplot 2 2 2 '':title '" " style':box:tens y(:,0) y(:,1) 'o '
new yc 30 'sin(pi*x)':new xc 30 'cos(pi*x)':new z 30 'x'
subplot 2 2 1:title '3d variant':rotate 50 60:box:tens xc yc z z 's'

C++ code:

void smgl_tens(mglGraph *gr)
{
	mglData y;	mgls_prepare1d(&y);	gr->SetOrigin(0,0,0);
	if(big!=3)	{	gr->SubPlot(2,2,0,"");	gr->Title("Tens plot (default)");	}
	gr->Box();	gr->Tens(y.SubData(-1,0), y.SubData(-1,1));
	if(big==3)	return;
	gr->SubPlot(2,2,2,"");	gr->Title("' ' style");	gr->Box();	gr->Tens(y.SubData(-1,0), y.SubData(-1,1),"o ");
	gr->SubPlot(2,2,1);	gr->Title("3d variant");	gr->Rotate(50,60);	gr->Box();
	mglData yc(30), xc(30), z(30);	z.Modify("2*x-1");
	yc.Modify("sin(pi*(2*x-1))");	xc.Modify("cos(pi*2*x-pi)");
	gr->Tens(xc,yc,z,z,"s");
}