大约有 44,000 项符合查询结果（耗时：0.0506秒） [XML]
Add x and y labels to a pandas plot
...n that object.
ax = df2.plot(lw=2, colormap='jet', marker='.', markersize=10, title='Video streaming dropout by category')
ax.set_xlabel("x label")
ax.set_ylabel("y label")
Or, more succinctly: ax.set(xlabel="x label", ylabel="y label").
Alternatively, the index x-axis label is automatically s...
Delete the first three rows of a dataframe in pandas
...
281
Use iloc:
df = df.iloc[3:]
will give you a new df without the first three rows.
...
Convert data.frame columns from factors to characters
...
18 Answers
18
Active
...
NumPy array initialization (fill with identical values)
...
NumPy 1.8 introduced np.full(), which is a more direct method than empty() followed by fill() for creating an array filled with a certain value:
>>> np.full((3, 5), 7)
array([[ 7., 7., 7., 7., 7.],
[ 7., 7., ...
Why do we need argc while there is always a null at the end of argv?
...
106
Yes, argv[argc]==NULL is guaranteed. See C11 5.1.2.2.1 Program startup (my emphasis)
If t...
How to use OpenSSL to encrypt/decrypt files?
...
10 Answers
10
Active
...
All falsey values in JavaScript
...ypeof as undefined. It was a Microsoft-proprietory function in IE before IE11, and was added to the HTML spec as a "willful violation of the JavaScript specification" so that sites written for IE wouldn't break on trying to access, for example, document.all.something; it's falsy because if (document...
Unable to find the wrapper “https” - did you forget to enable it when you configured PHP?
...id I'll list out exactly everything I've done so far. I am running PHP 5.2.14 with Zend Debugging on the latest Eclipse version on my Windows XP computer. I have a 1 GB of RAM. I have XAMPP running with Apache, MySQL, and FileZilla installed.
...
How to detect if CMD is running as Administrator/has elevated privileges?
...
13 Answers
13
Active
...