Hey folks,
I’m looking at this Mandelbrot example:
https://holoviews.org/gallery/apps/bokeh/mandelbrot.html
I’ve simplified it to remove the histogram and toolbar. Now I’d like to make the dynamic map take the full screen.
Does anyone know how I could do this? I’ve been trying with panel layouts but have not been successful.
from bokeh.layouts import gridplot
import numpy as np
import holoviews as hv
from holoviews import opts
from holoviews.streams import RangeXY
from numba import jit
import panel as pn
renderer = hv.renderer('bokeh')
@jit
def mandel(real, imag, max_iters):
"""
Given the real and imaginary parts of a complex number,
determine if it is a candidate for membership in the Mandelbrot
set given a fixed number of iterations.
"""
i = 0
c = complex(real, imag)
z = 0.0j
for i in range(max_iters):
z = z*z + c
if (z.real*z.real + z.imag*z.imag) >= 4:
return i
return 255
@jit
def create_fractal(min_x, max_x, min_y, max_y, image, iters):
height = image.shape[0]
width = image.shape[1]
pixel_size_x = (max_x - min_x) / width
pixel_size_y = (max_y - min_y) / height
for x in range(width):
real = min_x + x * pixel_size_x
for y in range(height):
imag = min_y + y * pixel_size_y
color = mandel(real, imag, iters)
image[y, x] = color
return image
def get_fractal(x_range, y_range):
(x0, x1), (y0, y1) = x_range, y_range
image = np.zeros((600, 600), dtype=np.uint8)
return hv.Image(create_fractal(x0, x1, -y1, -y0, image, 200),
bounds=(x0, y0, x1, y1))
range_stream = RangeXY(x_range=(-1., 1.), y_range=(-1., 1.))
dmap = hv.DynamicMap(get_fractal, label='Manderbrot Explorer', streams=[range_stream])
# The original example sets a static height and width here, but I want this to take the full screen
dmap.opts(opts.Image(cmap='fire', logz=True, xaxis=None, yaxis=None))
dmap.opts(active_tools=['wheel_zoom'], toolbar=None)
# This naive strech doesn't work either
layout = pn.Row(dmap, sizing_mode='stretch_both')
layout.servable()
Thanks for your help!
