在Matplotlib中检查轴刻度
问题描述:
是否有一种简便的方法来检查matplotlib中的轴是否为对数/线性轴?
Is there an easy way to check if axes in matplotlib are logarithmic/linear?
如果我输入 ax.transData.__dict__
(ax 是 semilogy
),我得到:
If I type ax.transData.__dict__
(ax is semilogy
), I get:
{'_a': TransformWrapper(BlendedGenericTransform(IdentityTransform(),<matplotlib.scale.Log10Transform object at 0x10ffb3650>)),
'_b': CompositeGenericTransform(BboxTransformFrom(TransformedBbox(Bbox('array([[ 0.00000000e+00, 1.00000000e+00],\n [ 2.00000000e+03, 1.00000000e+08]])'), TransformWrapper(BlendedGenericTransform(IdentityTransform(),<matplotlib.scale.Log10Transform object at 0x10ffb3650>)))), BboxTransformTo(TransformedBbox(Bbox('array([[ 0.05482517, 0.05046296],\n [ 0.96250543, 0.95810185]])'), BboxTransformTo(TransformedBbox(Bbox('array([[ 0., 0.],\n [ 8., 6.]])'), Affine2D(array([[ 80., 0., 0.],
[ 0., 80., 0.],
[ 0., 0., 1.]]))))))),
'_invalid': 2,
'_parents': <WeakValueDictionary at 4572332904>,
'_shorthand_name': '',
'input_dims': 2,
'output_dims': 2}
我可以编写一种方法来检查子转换 ax.transData._a._child
是否是对数尺度的,但我不喜欢它访问私有变量,而且它似乎相当不可持续,因为变量名可以更改.
I could write a method to check if the subtransforms ax.transData._a._child
are log-scale but I don't like that it accesses private variables and it seems rather unsustainable, since the variable name can change.
答
还有(记录不充分的)函数 axis.get_scale()
There is also the (poorly documented) function axis.get_scale()
scale_str = ax.get_yaxis().get_scale()
返回一个字符串.