Big river case, or combining channels from a braided reach
FROM GEOFF DEBENEDETTO I received some feedback about processing PIV that might be useful. Big rivers out here. Folks might need to fly a river's width in sections because it's too wide to capture, even at 1,200ft above ground or because they need to be lower for resolution, or the river is braided and it makes more sense to fly individual braids.
It would be great if those discrete vector field could be plotted over a single cross sectional area, or merged in some way via area-comp to make a single discharge. In the case of a very wide river and using something like a bridge at the bottom or top of frame to scale and control that would be handy. I suppose with braids, each section would need it's own roughness coefficients, so maybe separate measurements with a combined Q would make more sense there.