Transforms
Allows users to apply a transformation to the data.
🔗 Explore Transforms: Parameters and Descriptions
Examples​
- All the examples below show the combined use of transforms and other components to create a complete visualization.
Example 1 : Using geo-spatial data to display the feature.​
-
Using the feature below from transform module :
Centroid - Allows to compute the centroid X and Y coordinate.
from shapelets.apps import dataApp, vg
app = dataApp()
app.title('GeoJSON - US Country Map')
counties = app.sandbox.from_spatial('counties', 'us-counties-10m.json', layer='counties')
states = app.sandbox.from_spatial('states', 'us-counties-10m.json', layer='states')
app.mosaic(
vg.layouts.vconcat(
vg.plot(
vg.marks.geo(counties, stroke='currentColor', strokeWidth=0.25),
vg.marks.geo(states, stroke='currentColor', strokeWidth=1),
vg.marks.dot(counties,
x=vg.transforms.centroidX('geom'),
y=vg.transforms.centroidY('geom'),
r=2,
fill='transparent',
tip=True,
title='name'),
margin=0,
projectionType='albers'
width=800, height=400
)
)
)
