I'm looking for information on how animate point movement along a line. More specifically, I would like to move a point along the sinuosity of a river. Any Ideas??
I don't know an easy way to do this, which I suspect does exist, but can suggest a workaround. Assuming your river is a line feature (or if a polygon, can be collapsed to a line), make a copy of that line. Go into Editing Mode on just that line and split the line at your starting point (so you now have two lines). Then to find the line segment that is on the side you want to move the point to, select it, and while in Editing Mode use the Split function and specify the distance. Be be sure to pay attention to the line directionality, as this will govern whether you use "Start of line" or" End of line". Once the line is split at the new location, create a point there. Also, one potential trouble-spot to keep an eye out for. If two streams meet and the desired distance takes one past that junction, one may have to account for traversing onto a new line.
If you would like to repeat the point movement many times, then probably this won't be that effective. I bet there is a way to do this in Python. If there is a need to make the point several times, then state that here and maybe the Python experts here on GeoNet can suggest some code to provide an automated solution.
Chris Donohue, GISP
Have you read About building animations in ArcGIS—Help | ArcGIS Desktop ? The documentation has a lot of good information, and is the only suggestion I can offer given the information provided so far.
For the part about moving the point down the line, you can use Linear referencing. Create a route out of the stream polyline and use an event table to move a point event along the line at increments you define.
Can this issue be looked at in terms of tracking an object's location over time? What you'd end up with is a point feature class that would overly the line feature. You could have a series of points, each with a specific time defined - say 30 seconds apart (depends on the length of the line).
About visualizing temporal data—Help | ArcGIS Desktop
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