pydeck binary transfer data prep

[cornhundred]

Hi, is there a faster way to prepare data for binary data transfer than using apply (see below code from docs)?

nodes["position"] = nodes.apply(lambda row: [row["x"], row["y"], row["z"]], axis=1)

It can take ~5min on a dataset with ~millions of rows.

[ajduberstein]

Can you try:

nodes['position'] = nodes[['x', 'y', 'z']].values.tolist()

.apply will be slower. It shouldn't be the recommended path in the docs.

You can get a sense of what pydeck is doing by looking at how deck.gl handles binary attributes.

[cornhundred]

Thanks that is much faster