how to do a vector plot

[eliofungi@hotmail.com]

I would like to plot vectors in a map (like the quiver function in
Matlab), i.e. for plotting wind velocities in a 2D map. How can I do
this?
Thanks, Regards

[cdk52]

You could use either a graph control or a canvas control.

If you use a graph:

• Display your background map using PlotBitmap()
• For each vector:
• Call PlotPoint() or PlotPolygon() to draw the arrow head
• Call PlotLine to draw the arrow "shaft"

Equivalent functions are available for drawing on a canvas: CanvasDrawBitmap(), CanvasDrawPoint(), CanvasDrawLine() etc..

Regards,
Colin.