blocks|key|509374|text|您可以只将left或right传递给set_xlim|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|509375|plt.gca().set_xlim(left=0)|code-block|syntax|javascript|509376|对于y轴，请使用bottom或top|509377|plt.gca().set_ylim(bottom=0)|509378|entityMap^0|5|4|A|5|I|8|0|0|8|6|F|3|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@$9|Z|A|10|B|C]|$9|11|A|12|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|13|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|P|$]]

You can pass just <code>left</code> or <code>right</code> to <code>set_xlim</code>:

<pre><code>plt.gca().set_xlim(left=0)
</code></pre>

For the y axis, use <code>bottom</code> or <code>top</code>:

<pre><code>plt.gca().set_ylim(bottom=0)
</code></pre>

blocks|key|292925|text|只需为其中一个限制设置xlim：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|292926|plt.xlim(left=0)|code-block|syntax|javascript|292927|entityMap^0|B|4|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Just set <code>xlim</code> for one of the limits:
<pre><code>plt.xlim(left=0)
</code></pre>

blocks|key|509465|text|只需在@silvio上添加一点:如果你像figure,+ax1+=+plt.subplots(1,2,1)一样使用axis绘图，那么ax1.set_xlim(xmin+=+0)也可以工作！|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|509466|entityMap^0|K|X|1U|M|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

Just add a point on @silvio 's: if you use axis to plot like <code>figure, ax1 = plt.subplots(1,2,1)</code>. Then <code>ax1.set_xlim(xmin = 0)</code> also works!

blocks|key|509511|text|如上所述，根据matplotlib文档，可以使用matplotlib.axes.Axes类的set_xlim方法设置给定轴ax的x限制。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|509512|例如,|509513|>>>+ax.set_xlim(left_limit,+right_limit)
>>>+ax.set_xlim((left_limit,+right_limit))
>>>+ax.set_xlim(left=left_limit,+right=right_limit)|code-block|syntax|javascript|509514|一个限制可以保持不变(例如，左侧限制)：|509515|>>>+ax.set_xlim((None,+right_limit))
>>>+ax.set_xlim(None,+right_limit)
>>>+ax.set_xlim(left=None,+right=right_limit)
>>>+ax.set_xlim(right=right_limit)|509516|要设置当前轴的x限制，matplotlib.pyplot模块包含包装matplotlib.pyplot.gca和matplotlib.axes.Axes.set_xlim的xlim函数。|509517|def+xlim(*args,+**kwargs):
++++ax+=+gca()
++++if+not+args+and+not+kwargs:
++++++++return+ax.get_xlim()
++++ret+=+ax.set_xlim(*args,+**kwargs)
++++return+ret|509518|同样，对于y限制，请使用matplotlib.axes.Axes.set_ylim或matplotlib.pyplot.ylim。关键字参数是top和bottom。|509519|entityMap|0|LINK|mutability|MUTABLE|url|https://matplotlib.org/api/_as_gen/matplotlib.axes.Axes.set_xlim.html^0|O|K|1A|8|1P|2|1A|8|0|0|0|0|0|0|B|H|Y|L|1K|T|2E|4|0|0|C|T|16|M|1Z|3|23|6|0^^$0|@$1|2|3|4|5|6|7|14|8|@$9|15|A|16|B|C]|$9|17|A|18|B|C]|$9|19|A|1A|B|C]]|D|@$9|1B|A|1C|1|1D]]|E|$]]|$1|F|3|G|5|6|7|1E|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|1F|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|1G|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|1H|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|1I|8|@$9|1J|A|1K|B|C]|$9|1L|A|1M|B|C]|$9|1N|A|1O|B|C]|$9|1P|A|1Q|B|C]]|D|@]|E|$]]|$1|S|3|T|5|J|7|1R|8|@]|D|@]|E|$K|L]]|$1|U|3|V|5|6|7|1S|8|@$9|1T|A|1U|B|C]|$9|1V|A|1W|B|C]|$9|1X|A|1Y|B|C]|$9|1Z|A|20|B|C]]|D|@]|E|$]]|$1|W|3|-4|5|6|7|21|8|@]|D|@]|E|$]]]|X|$Y|$5|Z|10|11|E|$12|13]]]]

As aforementioned and according to the matplotlib documentation, the x-limits of a given axis <code>ax</code> can be set using the <a href="https://matplotlib.org/api/_as_gen/matplotlib.axes.Axes.set_xlim.html" rel="noreferrer"><code>set_xlim</code></a> method of the <code>matplotlib.axes.Axes</code> class.

For instance, 

<pre><code>&gt;&gt;&gt; ax.set_xlim(left_limit, right_limit)
&gt;&gt;&gt; ax.set_xlim((left_limit, right_limit))
&gt;&gt;&gt; ax.set_xlim(left=left_limit, right=right_limit)
</code></pre>

One limit may be left unchanged (e.g. the left limit): 

<pre><code>&gt;&gt;&gt; ax.set_xlim((None, right_limit))
&gt;&gt;&gt; ax.set_xlim(None, right_limit)
&gt;&gt;&gt; ax.set_xlim(left=None, right=right_limit)
&gt;&gt;&gt; ax.set_xlim(right=right_limit)
</code></pre>

To set the x-limits of the current axis, the <code>matplotlib.pyplot</code> module contains the <code>xlim</code> function that just wraps <code>matplotlib.pyplot.gca</code> and <code>matplotlib.axes.Axes.set_xlim</code>.

<pre><code>def xlim(*args, **kwargs):
 ax = gca()
 if not args and not kwargs:
 return ax.get_xlim()
 ret = ax.set_xlim(*args, **kwargs)
 return ret
</code></pre>

Similarly, for the y-limits, use <code>matplotlib.axes.Axes.set_ylim</code> or <code>matplotlib.pyplot.ylim</code>. The keyword arguments are <code>top</code> and <code>bottom</code>.

blocks|key|509543|text|您还可以执行以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|509544|ax.set_xlim((None,upper_limit))
ax.set_xlim((lower_limit,None))|code-block|syntax|javascript|509545|如果您想使用set()，这将非常有用，它允许您一次设置多个参数：|509546|ax.set(xlim=(None,+3e9),+title='my_title',+xlabel='my_x_label',+ylabel='my_ylabel')|509547|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

You can also do:
<pre><code>ax.set_xlim((None,upper_limit))
ax.set_xlim((lower_limit,None))

</code></pre>
That is helpful if you want to use set(), which allows you to set several parameters at once:
<pre><code>ax.set(xlim=(None, 3e9), title='my_title', xlabel='my_x_label', ylabel='my_ylabel')
</code></pre>

I want to set the upper limit of the y-axis to 'auto', but I want to keep the lower limit of the y-axis to always be zero. I tried 'auto' and 'autorange', but those don't seem to work. Thank you in advance.

Here is my code:

<pre><code>import matplotlib.pyplot as plt

def plot(results_plt,title,filename):

 ############################
 # Plot results

 # mirror result table such that each parameter forms an own data array
 plt.cla()
 #print results_plt
 XY_results = []

 XY_results = zip( *results_plt)

 plt.plot(XY_results[0], XY_results[2], marker = ".")

 plt.title('%s' % (title) )
 plt.xlabel('Input Voltage [V]')
 plt.ylabel('Input Current [mA]')

 plt.grid(True)
 plt.xlim(3.0, 4.2) #***I want to keep these values fixed"
 plt.ylim([0, 80]) #****CHANGE**** I want to change '80' to auto, but still keep 0 as the lower limit 
 plt.savefig(path+filename+'.png')
</code></pre>

How to set 'auto' for upper limit, but keep a fixed lower limit with matplotlib.pyplot

我希望将y轴的上限设置为'auto'，但我希望y轴的下限始终为零。我试过'auto‘和'autorange'，但它们似乎不起作用。提前谢谢你。下面是我的代码：import matplotlib.pyplot as pltdef plot(results_plt,title,filename):    #########...

问如何将上限设置为'auto‘，但使用matplotlib.pyplot保持固定的下限
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问如何将上限设置为'auto‘，但使用matplotlib.pyplot保持固定的下限
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