Show threadNiko FรถhrFeb 13, 2024

@LisaHornung yep! I'm not using Jupyter Notebooks very often but I'm thinking if it could be integrated in a Holoviz Panel dashboard ๐Ÿค”

#holoviz #lexcube

Niko FรถhrJan 23, 2024

Any #holoviz or #panel experts here? Any ideas why panel is so slow with #dask? Given task with small (5M rows) data, I got following benchmarks

- Pandas alone: 1.5 seconds
- Dask alone: 3 seconds
- Panel with pandas: 3 seconds
- Panel with dask: 30 seconds

Details: https://discourse.holoviz.org/t/panel-app-which-filters-just-5m-rows-of-data-using-dask-is-very-slow-why/6767

#python #datascience #datasciencequestions

Panel App which filters just 5M rows of data using dask is very slow - Why?

I have an application which should Read raw data (ultimately, 100โ€™s of millions of rows) Filter data based on widgets Draw graphs Iโ€™m evaluating Holoviz for the purpose. Now I have created an application which uses Dask, but itโ€™s really, really slow. Iโ€™ve tried to reproduce the slowness in this MWE app with a dummy data set. Code for MWE app: from __future__ import annotations import sys import dask.dataframe as dd import hvplot.dask # noqa import panel as pn @pn.cache def get_data() -> ...

HoloViz Discourse
Niko FรถhrJan 10, 2024

Creating a big data visualization dashboard/browser app. Is #holoviz and #datashader the way to go? In addition, would you use #plotly or #bokeh or something else for interactive plots? Any other tips?

#datascience #python #visualization

Show threadAnita Graser ๐Ÿ‡ช๐Ÿ‡บ๐Ÿ‡บ๐Ÿ‡ฆ๐Ÿ‡ฌ๐Ÿ‡ชDec 30, 2023
for future reference: there's also this bug report on #pyodide for #geoviews https://github.com/pyodide/pyodide/issues/4214
#holoviz #holoviews
Fatal error when importing geoviews ยท Issue #4214 ยท pyodide/pyodide

๐Ÿ› Bug When importing geoviews after installing with micropip, Pyodide suffers a fatal error. I found this error while using panel to create a Pyoidide worker for Github Pages. However, the error is...

GitHub
Show threadAnita Graser ๐Ÿ‡ช๐Ÿ‡บ๐Ÿ‡บ๐Ÿ‡ฆ๐Ÿ‡ฌ๐Ÿ‡ชNov 15, 2023

There is always so much more to tell. I only realized afterwards that I overlooked the new spatial and temporal unit support ๐Ÿคฆ

But I did remember the new and improved #OGC #MovingFeatures #MFJson support and our plans for #MEOS / #MobilityDB integration

#MobiSpaces #EMERALDSeu #Panel #Holoviz #Holoviews

Anita Graser ๐Ÿ‡ช๐Ÿ‡บ๐Ÿ‡บ๐Ÿ‡ฆ๐Ÿ‡ฌ๐Ÿ‡ชOct 7, 2023

Exploring the data app publishing options of #holoviz #panel.

panel convert (https://panel.holoviz.org/how_to/wasm/convert.html) looks super promising but tricky since both #folium and #geoviews seem to be missing from #pyodide

But for now, enjoy this demo #WFS viewer for visualizing data from #ogdwien @datagvat

https://mybinder.org/v2/gh/anitagraser/ogd-at-lab/main?urlpath=lab/tree/apps/panel-test.ipynb

Converting Panel applications โ€” Panel v1.2.3

Anita Graser ๐Ÿ‡ช๐Ÿ‡บ๐Ÿ‡บ๐Ÿ‡ฆ๐Ÿ‡ฌ๐Ÿ‡ชAug 21, 2023

I'm so happy that we're finally in a place where we can whip up a quick trajectory data exploration app with maps and graphs from rather arbitrary inputs, be it plain old csv with x/y in any crs known to proj, or fancy gis formats in just a few minutes.

It's minimal extra effort and seems to impress most people so much more than comparable plots in a notebook ๐Ÿคทโ€โ™€๏ธ๐Ÿ˜€

#MovingPandas #panel #hvplot #holoviz #holoviews #geoviews #geopandas #SpatialDataScience #mobilitydatascience #dataviz

Anita Graser ๐Ÿ‡ช๐Ÿ‡บ๐Ÿ‡บ๐Ÿ‡ฆ๐Ÿ‡ฌ๐Ÿ‡ชJul 31, 2023

Working out the last kinks in the improved @movingpandas plots: now with proper arrow heads visualizing #movement direction

#mobility #SpatialDataScience #mobilitydatascience #sportsanalytics #movingpandas #geoviews #holoviz #holoviews #bokeh

Anita Graser ๐Ÿ‡ช๐Ÿ‡บ๐Ÿ‡บ๐Ÿ‡ฆ๐Ÿ‡ฌ๐Ÿ‡ชJul 9, 2023

Public service announcement: pin your #hvplot version to 0.8.3 for now, particularly if you use #geoviews like @movingpandas does

https://github.com/movingpandas/movingpandas/issues/326

#holoviz #holoviews #geopandas

Trajectory.hvplot() error ยท Issue #326 ยท movingpandas/movingpandas

With a trajectory in epsg:4326, traj.hvplot(geo=False) plots the lines correctly, but the arrow-head is on null island. traj.hvplot() results in: Exception: An axis may only be assigned one project...

GitHub
0ร—4a6f4672Jun 29, 2023
Heard a nice talk today in #Berlin from Jean-Luc Stevens about #Holoviz at @pyberlin . #hvPlot and #Datashader look like a powerful combination to render large datasets. Jean-Luc works like @sophiamyang for #Anaconda
https://holoviz.org/index.html
High-level tools to simplify visualization in Python โ€” HoloViz 0.16.2 documentation