visulize sequence of point clouds

[iamani]

Hi,

I have a sequence of point cloud. I tried pptk to visualize and interact with each cloud but independently (evoking a new viewer). I'm wondering if there's a way to update the current pptk viewer to plot the next point cloud?

Thanks.

[iamani]

Hey! Thanks! But what's the function to update points? I can create a viewer with point + rgb and get a reference to the viewer. Viewer attributes can change color but not points, or am I missing something? for a new one I need to call the viewer (create a new viewer) ... I check the functions:

…

On Tue, Jun 8, 2021 at 5:39 PM Carlos Vélez García ***@***.***> wrote: Hey, You can just initialize the viewer with a given pointcloud and then update that variable in a loop and it will work because it keeps a reference. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <https://urldefense.com/v3/__https://github.com/heremaps/pptk/issues/52*issuecomment-856826450__;Iw!!Nmw4Hv0!n0nkcHM0eMpRZmOCUry-dMEPdUeilr00jZIssHQCXSCBfRf3e9s_D4ePbODqNLoVEeYGOZk$>, or unsubscribe <https://urldefense.com/v3/__https://github.com/notifications/unsubscribe-auth/ACJRJRDFUCEPQ67Z6A4ZMZDTRYTSTANCNFSM43RTUEIQ__;!!Nmw4Hv0!n0nkcHM0eMpRZmOCUry-dMEPdUeilr00jZIssHQCXSCBfRf3e9s_D4ePbODqNLoV1MnxVZA$> .

-- Amani

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[kwsacca]

@iamani From a previous issue, answered by @Merevoli-DatLuu. This answer helped me with what I wanted to do. I believe v.load() is what you want (after updating points of course).

Question:

Is there an API to plot a set of points in real time? Basically I guess I don't want to kill the viewer, but rather add a new set of points and swap the buffer

Answer:

You can invoke load() method instead.
Example:
points = [[1, 1, 1], [1, 1, 2]]
v = pptk.viewer(points)
points.append([1, 1, 3])
v.load(points)

[iamani]

Many thanks! I was looking for this function 🤩

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On 8 Jun 2021, at 10:26 PM, kwsacca ***@***.***> wrote:  From a previous issue, answered by @Merevoli-DatLuu. This answer helped me with what I wanted to do. I believe v.load() is what you want (after updating points of course). Question: Is there an API to plot a set of points in real time? Basically I guess I don't want to kill the viewer, but rather add a new set of points and swap the buffer Answer: You can invoke load() method instead. Example: points = [[1, 1, 1], [1, 1, 2]] v = pptk.viewer(points) points.append([1, 1, 3]) v.load(points) — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or unsubscribe.

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[ammaryasirnaich]

Hi @kwsacca , thanks for sharing the solution for this task. I just wanted to ask is there any way if we also want the old points to remain along with updating the new points?