[英]how to display the all intervals in colorbar using matplotlib
This is my code.I mentioned here 50 intervals,when i drag the slider then only i got 6 or 7 intervals,but i want to display the all my intervals in my colorbar. 这是我的代码。我在这里提到了50个间隔,当我拖动滑块时只有6个或7个间隔,但是我想在我的颜色栏中显示所有间隔。 So can any one please guide me.Thank you in advance.
所以任何人都可以请我指导。谢谢。
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.widgets import Slider, Button
import matplotlib.colors
ax = plt.subplot(111)
plt.subplots_adjust(left=0.25, bottom=0.25)
img_data = np.random.rand(50,50)
c_max = 2
img = ax.imshow(img_data, interpolation='nearest')
cb = plt.colorbar(img)
axcolor = 'lightgoldenrodyellow'
ax_cmax = plt.axes([0.25, 0.15, 0.65, 0.03])
s_cmax = Slider(ax_cmax, 'max', 0, 50, valfmt=c_max)
def update(val, s=None):
# _cmin = s_cmin.val
_cmax = s_cmax.val
img.set_clim(_cmax)
plt.draw()
s_cmax.on_changed(update)
plt.show()
The argument to Slider
called valfmt
should be a string which is used to format the slider value. Slider
名为valfmt
的参数应为用于格式化滑块值的字符串。
So if you wanted to display 2 decimal places to the float you would need to make c_max = "%1.2f"
. 因此,如果要在浮点数上显示2个小数位,则需要使
c_max = "%1.2f"
。 Note that if you want to keep the minimum value at 0 you need to set that too in img.set_clim(0, _cmax)
请注意,如果要将最小值保持为0,则也需要在
img.set_clim(0, _cmax)
c_max = "%1.2f"
img = ax.imshow(img_data, interpolation='nearest')
cb = plt.colorbar(img)
axcolor = 'lightgoldenrodyellow'
ax_cmax = plt.axes([0.25, 0.15, 0.65, 0.03])
s_cmax = Slider(ax_cmax, 'max', 0, 50, valfmt=c_max)
def update(val, s=None):
# _cmin = s_cmin.val
_cmax = s_cmax.val
img.set_clim(0, _cmax)
plt.draw()
s_cmax.on_changed(update)
plt.show()
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