Need to Filter Data

[paul_a_cardinale]

I have a loop that generates pairs of coordinates (X, Z) that are waypoints.

Eventually, a path is linearly interpolated between the waypoints.

Because of the nature of the data, there will be long sequences where Z doesn't change.  Within those sequences, I want to keep only the endpoints, deleting the superfluous waypoints in between.

Any suggestions on how to approach this would be appreciated (so far, my attempts are ugly).

[avogadro5]

so remove consecutive repeats? does "not ugly" mean no for loop?

[raphschru]

Hi Paul,

Here is how I would proceed. Also, I assumed only the Zs need to be filtered, as the X is constant during the current iteration of the main loop.

Regards,

Raphaël.

[paul_a_cardinale]

Neither will work because I need both endpoints of the sequence.  For instance, if I start with:

x=1, z=0.1

x=2, z=0.1

x=3, z=0.1

x=4, z=0.1

x=5, z=0.2

I want to end up with:

x=1, z=0.1

x=4, z=0.1

x=5, z=0.2

[paul_a_cardinale]

Here's what I ended up with:

[altenbach]

Still seems overly complicated. Could you please attach your actual VI (2020 or below) and some typical data? thanks.

See if this can give you some ideas (probably still need some tweaks, e.g. remove duplicates)

EDIT: slightly improved version.

[paul_a_cardinale]

Here.  The inputs have their default values set to real data.