Hi all,

I'm using Qwt3D to create a 3D "line plot." All is working perfectly in this way:

Qt Code: 
  1. PlotWindow3D::PlotWindow3D(QWidget *parent, PTModel *ptm)
  2.     : QWidget(parent)
  3. {
  4. 	ui.setupUi(this);
  5.  
  6.     Qwt3D::SurfacePlot *sp = new Qwt3D::SurfacePlot(this);
  7.     ui.verticalLayout->addWidget(sp);
  8.  
  9.     sp->setPlotStyle(Qwt3D::WIREFRAME);
  10.  
  11.     //do blue....
  12.     Qwt3D::RGBA rgba;
  13.     rgba.r = 0.0;
  14.     rgba.g = 0.0;
  15.     rgba.b = 1.0;
  16.     sp->setMeshColor(rgba);
  17.  
  18.     Qwt3D::TripleField tf;
  19.     Qwt3D::CellField cf;
  20.     Qwt3D::Cell c1;
  21.  
  22.     tf.clear();
  23.     cf.clear();
  24.     c1.clear();
  25.  
  26.     const QModelIndex mi;
  27.     dvector dvx = ptm->getColumn("x");
  28.     dvector dvy = ptm->getColumn("y");
  29.     dvector dvz = ptm->getColumn("z");
  30.     for (unsigned i = 0; i < dvx.size(); i++) {
  31.    		tf.push_back(Qwt3D::Triple(dvx[i], dvy[i], dvz[i]));
  32.    		c1.push_back(i);
  33.     }
  34.     cf.push_back(c1);
  35.  
  36.     sp->loadFromData(tf, cf);
  37.  
  38.     sp->setRotation(30,0,15);
  39.     sp->setShift(0.15,0,0);
  40. 	sp->coordinates()->axes[Qwt3D::X1].setLabelString("x-axis");
  41. 	sp->coordinates()->axes[Qwt3D::Y1].setLabelString("y-axis");
  42. 	sp->coordinates()->axes[Qwt3D::Z1].setLabelString("z-axis");
  43.  
  44. 	sp->setMeshLineWidth(2);
  45.  
  46.     sp->setCoordinateStyle(Qwt3D::FRAME);
  47.  
  48. 	sp->updateData();
  49. 	sp->updateGL();
  50.  
  51. }
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With one exception: the plot automatically connects the first and last points of the curve. Assumedly, this is to create a surface, but is not what I'm looking for.

Any ideas as to how to turn this off?

Also, if there are any Qwt3D-specific forums in which to pose this question, please advise as such.

Be well....