刻度設置
參考文檔:
以xticks為例:
matplotlib.pyplot.xticks(*args, **kwargs)
獲取或者設置當前刻度位置和文本的 x-limits:
# return locs, labels where locs is an array of tick locations and
# labels is an array of tick labels.
locs, labels = xticks()
# set the locations of the xticks
xticks( arange(6) )
# set the locations and labels of the xticks
xticks( arange(5), ('Tom', 'Dick', 'Harry', 'Sally', 'Sue') )
關鍵字 args
,如果有其他的參數則是 Text 屬性。例如,旋轉長的文本標注。
xticks( arange(12), calendar.month_name[1:13], rotation=17 )
參考文檔
Axis containers
matplotlib.axis.Axis對象負責刻度線、格網線、刻度標注和坐標軸標注的繪制工作。你可以設置y軸的左右刻度或者x軸的上下刻度。 Axis
也存儲了用於自動調整,移動和放縮的數據和視覺間隔;同時 Locator 和 Formatter 對象控制着刻度的位置以及以怎樣的字符串呈現。
每一個 Axis
對象包含一個 label
屬性以及主刻度和小刻度的列表。刻度是 XTick 和 YTick 對象,其包含着實際線和文本元素,分別代表刻度和注釋。因為刻度是根據需要動態創建的,你應該通過獲取方法 get_major_ticks() 和 get_minor_ticks()以獲取主刻度和小刻度的列表。盡管刻度包含了所有的元素,並且將會在下面代碼中涵蓋,Axis
方法包含了獲取方法以返回刻度線、刻度標注和刻度位置等等:
In [285]: axis = ax.xaxis
In [286]: axis.get_ticklocs()
Out[286]: array([ 0., 1., 2., 3., 4., 5., 6., 7., 8., 9.])
In [287]: axis.get_ticklabels()
Out[287]: <a list of 10 Text major ticklabel objects>
# note there are twice as many ticklines as labels because by
# default there are tick lines at the top and bottom but only tick
# labels below the xaxis; this can be customized
In [288]: axis.get_ticklines()
Out[288]: <a list of 20 Line2D ticklines objects>
# by default you get the major ticks back
In [291]: axis.get_ticklines()
Out[291]: <a list of 20 Line2D ticklines objects>
# but you can also ask for the minor ticks
In [292]: axis.get_ticklines(minor=True)
Out[292]: <a list of 0 Line2D ticklines objects>