visualization

As a follow-up to #11540, we would like to add metadata to as many examples as possible. This will not only make the examples more usable as they are right now, but it will also open up new possibilities to search for and crosslink examples.

For the purpose of this issue, 'examples' are all .py files in the subfolders of the examples folder in this repository.

Prerequisites

Adding

Most items coming from questions on the community forum

• a proper multicategory bar example based on https://community.plotly.com/t/multicategory-axis-type-example/26392
• example of shape or annotation covering several subplots thanks to xref='paper'. Also the shapes and annotations tutorial should link to each other.
• orthographic projection example in 3d axes tutorial (or

Hi!

My suggestion/request is simple. When filtering the data, sometimes one needs to use the edge values of the data distribution in the filter histogram.

For example, one wants to choose the data of an hourly distribution (from 0:00 to 24:00) for the time between 22:00 and 6:00 in the nighttime and discard the data from 6:00 till 22:00 during the daytime.

So, when filtering the data with

Make the animation smoother.

Description
Trying to convert an "object" column to string fails.

Example code:

import vaex
import numpy as np

if __name__ == "__main__":
    arr = np.array([123, "test", None], dtype=object)
    df = vaex.from_arrays(test=arr)
    df['test'] = df['test'].astype('str')
    print(df.head())

Exception:

TypeError: to_string(): incompatible function argu