Hi,
I am struggeling to get the high limit for colorbars shown. It seems to be related to small values. In the example below with low limit 1.9 and high limit 2.3 the 2.3 is not shown. But if the high limit is 2.5 the the high limit is shown. If the values are 10 times higher the 23.0 is shown.
Or am I doing something wrong?
Kind regards,
Jonas
from bokeh.io import output_file, show
from bokeh.layouts import row
from bokeh.palettes import brewer
from bokeh.plotting import figure, ColumnDataSource
from bokeh.models import PrintfTickFormatter, LinearColorMapper, ColorBar
x = [1,2,3,4,5]
y = [1,10,100,1000,10000]
z1 = [1.82, 1.92, 2.03, 2.12, 2.24]
source1 = ColumnDataSource(
data = dict( x = x, y = y, z = z1))
z2 = [18.2, 19.2, 20.3, 21.2, 22.4]
source2 = ColumnDataSource(
data = dict( x = x, y = y, z = z2))
output_file(“colorbar.html”)
colors = brewer[“Spectral”][8]
mapper1 = LinearColorMapper(colors, low = 1.9, high = 2.3)
p1 = figure(width=350, height=300, y_axis_type = “log”,
toolbar_location=“above”)
p1.circle(x = ‘x’, y=‘y’, source = source1, size = 20,
color = {‘field’: ‘z’, ‘transform’: mapper1}, line_color = None)
color_bar1 = ColorBar(color_mapper=mapper1,
formatter = PrintfTickFormatter(format="%1.2f"),
label_standoff=12,
border_line_color=None,
location=(0,0))
p1.add_layout(color_bar1, ‘right’)
mapper2 = LinearColorMapper(colors, low = 1.9, high = 2.5)
p2 = figure(width=350, height=300, y_axis_type = “log”,
toolbar_location=“above”)
p2.circle(x = ‘x’, y=‘y’, source = source1, size = 20,
color = {‘field’: ‘z’, ‘transform’: mapper2}, line_color = None)
color_bar2 = ColorBar(color_mapper=mapper2,
formatter = PrintfTickFormatter(format="%1.2f"),
label_standoff=12,
border_line_color=None,
location=(0,0))
p2.add_layout(color_bar2, ‘right’)
mapper3 = LinearColorMapper(colors, low = 19, high = 23)
p3 = figure(width=350, height=300, y_axis_type = “log”,
toolbar_location=“above”)
p3.circle(x = ‘x’, y=‘y’, source = source2, size = 20,
color = {‘field’: ‘z’, ‘transform’: mapper3}, line_color = None)
color_bar3 = ColorBar(color_mapper=mapper3,
formatter = PrintfTickFormatter(format="%1.2f"),
label_standoff=12,
border_line_color=None,
location=(0,0))
p3.add_layout(color_bar3, ‘right’)
show(row([p1, p2, p3]))
