Minimum Origin Version Required: Origin8 SR0
The following function shows how to plot Vector XYXY, before running need to prepare a worksheet with XYXY columns.
void vector_xyxy_plot() { Worksheet wks = Project.ActiveLayer(); if( !wks ) return; DataRange dr; dr.Add(wks, 0, "X"); dr.Add(wks, 1, "Y"); dr.Add(); dr.Add(wks, 2, "X2"); dr.Add(wks, 3, "Y2"); GraphPage gp; gp.Create("vectxyxy"); GraphLayer gl = gp.Layers(0); int nn = gl.AddPlot(dr, IDM_PLOT_FLOWVECTOR); if( 0 == nn ) { gl.Rescale(); } }