I have a list of ellipses with x and centroid, orientation, and major diameter and minor diameter. I currently have them overlaid on an image in red but what I would like is to be able to colour them based on their orientation (keeping in mind that the orientation is now always positive but is bound by -180 < theta < 180 degrees).
Ideally I would like to both be able to colour them as a continuous function as well as by discrete bounds, ie. If -1 < orientation < 0 -> Blue, 0 < orientation < 1 -> Red. etc.
Any help would be greatly appreciated. I've appended a very small sample of my data set.
Thanks, Andrew.
SampleData = {{13717.3, 1101.24, -0.470674, 204.482, 26.6952}, {9772.62, 1100.88, -0.350601, 213.606, 26.4938}, {13102., 1100.25, -0.100438, 167.739, 27.9001}, {13519.1, 1100.84, -0.117897, 196.044, 27.1261}, {10499.7, 1100.56, -0.0433213, 231.682, 26.8481}, {12475.2, 1100.51, -0.000615264, 208.972, 27.7002}, {10285.5, 1100.21, -0.109259, 189.952, 25.066}, {12144., 1098.06, -0.683868, 152.963, 24.2331}, {14052., 1097.97, -1.14783, 215.054, 24.9059}, {9075.55, 1096., 0.302659, 277.09, 26.9322}}; Prepend[SampleData,{"X centroid","Y centroid","Orientation","Major Diameter","Minor Diamater"}]//TableForm Visualization = Graphics[{Red,Thickness -> 0.0025, SampleData /. {({centroidx_, centroidy_, orientation_, majordiameter_, minordiameter_}) :> {Rotate[ Circle[{centroidx, centroidy}, {majordiameter/2, minordiameter/2}], orientation*\[Pi]/180, {centroidx, centroidy}]}} } ] 
