Plot with ggrepel labels renders very slowly

Asked May 01 '19 at 20:44

Active May 01 '19 at 21:08

Viewed 267 times

I've got a ggplot graphic with ggrepel labels that renders in a few seconds on my local quad-core laptop. However, when I attempt to render this same graphic on a server with 32 cores (or even 96 cores), the server requires over 10 minutes.

Why is ggrepel rendering so slowly?

From what I understand, ggrepel::geom_text_repel assigns a repulsive force or charge to each label. Does this type of computation require a physics engine that runs much faster on a GPU? I believe the servers I am using do not have GPUs, and are processing the repulsion on a single CPU core.

edited May 01 '19 at 21:08

markus

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asked May 01 '19 at 20:44

Megatron

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How many labels are we talking about? – camille May 01 '19 at 21:41
~400 labels in the plot – Megatron May 01 '19 at 21:42
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This doesn't directly address the rendering, but are 400 labels both necessary and legible? – camille May 01 '19 at 22:06
Necessary and while I can’t share there is no issue of legibility – Megatron May 01 '19 at 22:07

Plot with ggrepel labels renders very slowly

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