大约有 48,000 项符合查询结果（耗时：0.0640秒） [XML]
Getting individual colors from a color map in matplotlib
...mport matplotlib
cmap = matplotlib.cm.get_cmap('Spectral')
rgba = cmap(0.5)
print(rgba) # (0.99807766255210428, 0.99923106502084169, 0.74602077638401709, 1.0)
For values outside of the range [0.0, 1.0] it will return the under and over colour (respectively). This, by default, is the minimum and ...
Is MATLAB OOP slow or am I doing something wrong?
...imes
nop() function: 0.02261 sec 0.23 usec per call
nop1-5() functions: 0.02182 sec 0.22 usec per call
nop() subfunction: 0.02244 sec 0.22 usec per call
@()[] anonymous function: 0.08461 sec 0.85 usec per call
nop(obj) method: 0.2...
Java: how can I split an ArrayList in multiple small ArrayLists?
...t<Integer> numbers = new ArrayList<Integer>(
Arrays.asList(5,3,1,2,9,5,0,7)
);
List<Integer> head = numbers.subList(0, 4);
List<Integer> tail = numbers.subList(4, 8);
System.out.println(head); // prints "[5, 3, 1, 2]"
System.out.println(tail); // prints "[9, 5, 0, 7]"
C...
Apply pandas function to column to create multiple new columns?
...
115
Building off of user1827356 's answer, you can do the assignment in one pass using df.merge:
df...
What's the difference between “mod” and “remainder”?
...
5 Answers
5
Active
...
Connect to a locally built Jekyll Server using mobile devices in the LAN
...
|
edited May 5 at 17:24
answered May 17 '13 at 12:11
...
How to count the number of true elements in a NumPy bool array
...
265
You have multiple options. Two options are the following.
numpy.sum(boolarr)
numpy.count_nonzer...
From ND to 1D arrays
... np.ndarray.flat (for an 1D iterator):
In [12]: a = np.array([[1,2,3], [4,5,6]])
In [13]: b = a.ravel()
In [14]: b
Out[14]: array([1, 2, 3, 4, 5, 6])
Note that ravel() returns a view of a when possible. So modifying b also modifies a. ravel() returns a view when the 1D elements are contiguous i...
Converting a column within pandas dataframe from int to string
...
5 Answers
5
Active
...
Simple C example of doing an HTTP POST and consuming the response
...
+50
A message has a header part and a message body separated by a blank line. The blank line is ALWAYS needed even if there is no messag...