If you can't do it in sciplot, you could try morphologica, which has a QuiverVisual class for plotting vector fields. It's 2D GraphVisual class is also able to do this. A short example program that draws three quivers for a three element vector field is:

#include <vector>
#include <morph/vec.h>
#include <morph/Visual.h>
#include <morph/ColourMap.h>
#include <morph/QuiverVisual.h>

int main()
{
    morph::Visual scene(1024, 768, "morph::QuiverVisual"); // Create 1024x768 pix window

    // Define a vector field
    std::vector<morph::vec<float, 3>> coords = { {0,0,0},  {0,1,0},      {1,0,0}     };
    std::vector<morph::vec<float, 3>> quivs =  { {0,0,1},  {0,-.3,1.1},  {-.3,0,1.2}  };

    // Create the QuiverVisual VisualModel with make_unique
    auto vmp = std::make_unique<morph::QuiverVisual<float>>(&coords, morph::vec<float, 3>{0}, &quivs,
                                                            morph::ColourMapType::Viridis);
    scene.bindmodel (vmp); // boilerplate - wires up callbacks

    vmp->do_quiver_length_scaling = false;  // Avoid scaling the quiver lengths

    vmp->finalize();            // builds the OpenGL vertices
    scene.addVisualModel (vmp); // Adds the QuiverVisual to the scene

    scene.keepOpen();           // Render until user quits with Ctrl-q

    return 0;
}

Looks like: A screenshot of the morph::Visual window displaying a QuiverVisual (and the scene coordinate arrows)

For more options/example code see:

https://github.com/ABRG-Models/morphologica/blob/main/examples/showcase.cpp#L335

and

https://github.com/ABRG-Models/morphologica/blob/main/examples/quiver.cpp