maartenbreddels

Code and image on PyCafe

This is a simple Altair example that compares the performance of different cars.

Code

This code below is included from PyCafe directly.

maartenbreddels

# $ panel serve reacton-in-panel.py
import panel as pn
import reacton
import reacton.ipywidgets as w


@reacton.component
def ButtonClick(label="Hi"):
    clicks, set_clicks = reacton.use_state(0)
    def increment():

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# Makefile for converting the CSV files from http://cdn.gea.esac.esa.int/Gaia/gdr2/gaia_source/csv/
# to a single (vaex) hdf5 file
#  * https://docs.vaex.io
#  * https://github.com/maartenbreddels/vaex/
# It is multistage to work around opening 60 000 files at once.
# Strategy is
#  * stage1: convert all cvs.gz to csv to hdf5
#   * do this via xargs and calling make again, since gmake has trouble matching 60 000 rules
#  * stage2: Create part-<NUMBER>.txt files containing max FILES_PER_PART per file  
#  * stage3: convert the list of hdf5 files to single hdf5 files (part-<NUMBER>.hdf5)

maartenbreddels