Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Implement datetime hover for Raster/Image types #3520

Merged
merged 2 commits into from
Feb 23, 2019
Merged
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
32 changes: 32 additions & 0 deletions holoviews/plotting/bokeh/raster.py
Original file line number Diff line number Diff line change
@@ -3,6 +3,8 @@
import numpy as np
import param

from bokeh.models import DatetimeAxis, CustomJSHover

from ...core.util import cartesian_product, dimension_sanitizer, isfinite
from ...element import Raster, RGB, HSV
from .element import ElementPlot, ColorbarPlot
@@ -34,6 +36,36 @@ def _hover_opts(self, element):
tooltips.append((vdim.pprint_label, '@{0}'.format(vname)))
return tooltips, {}

def _postprocess_hover(self, renderer, source):
super(RasterPlot, self)._postprocess_hover(renderer, source)
hover = self.handles.get('hover')
if not (hover and isinstance(hover.tooltips, list)):
return

element = self.current_frame
xdim, ydim = [dimension_sanitizer(kd.name) for kd in element.kdims]
xaxis = self.handles['xaxis']
yaxis = self.handles['yaxis']

code = """
var {ax} = special_vars.{ax};
var date = new Date({ax});
return date.toISOString().slice(0, 19).replace('T', ' ')
"""
tooltips, formatters = [], dict(hover.formatters)
for (name, formatter) in hover.tooltips:
if isinstance(xaxis, DatetimeAxis) and formatter == '$x':
xhover = CustomJSHover(code=code.format(ax='x'))
formatters['$x'] = xhover
formatter += '{custom}'
if isinstance(yaxis, DatetimeAxis) and formatter == '$y':
yhover = CustomJSHover(code=code.format(ax='y'))
formatters['$y'] = yhover
formatter += '{custom}'
tooltips.append((name, formatter))
hover.tooltips = tooltips
hover.formatters = formatters

def __init__(self, *args, **kwargs):
super(RasterPlot, self).__init__(*args, **kwargs)
if self.hmap.type == Raster: