numpy
Py_initialize / Py_Finalize not working twice with numpy
On the second call of the following code, my app segfault, so I guess I am missing something : Py_Initialize();[详细]
2023-04-11 10:18 分类：问答simple numpy example from manual does not work as expected
The following code is from the Numpy 1.4.1 manual, numpy.char import numpy as np charar = np.chararray((3, 3))[详细]
2023-04-11 09:51 分类：问答Finding a subimage inside a Numpy image
I have two Numpy arrays (3-dimensional uint8) converted from PIL images. I want to find if the first image contains the second image, and if 开发者_JAVA技巧so, find out the coordinates of the top-lef[详细]
2023-04-11 06:20 分类：问答Numpy, all pairwise correlations of a 3d array
I have an array of shape (l,m,n). I\'m trying to calculate a distance matrix of shape (l,m,n) where entry (i,j,k) is the coefficient between vectors (i,j,:) and (i,:,k).I haven\'t found anything in nu[详细]
2023-04-11 06:13 分类：问答Small clarification needed on numpy.any for matrices
I am having a slight problem in getting numpy.any() to work fine on my problem. Consider I have a 3D matr开发者_JS百科ix of N X M X M matrix, where I need to get rid of any matrix MXM that has all its[详细]
2023-04-11 03:58 分类：问答OpenCV Python and Histogram of Oriented Gradient
Is there any useful documentation for using the HOGDescriptor functionality in Python OpenCV? I have read the C++ documentation, but the Python version functions differently and I cannot figure it out[详细]
2023-04-11 01:23 分类：问答numpy: calculate average in a certain area
is there a way for calculating the average within a certain开发者_高级运维 bbox. The difficulty is that the bbox may also contain float values, so that the bounds of the box values must be weighted. T[详细]
2023-04-10 21:01 分类：问答Numpy object arrays
I\'ve recently run into issues when creating Numpy object arrays using e.g. a = np.开发者_JAVA百科array([c], dtype=np.object)[详细]
2023-04-10 18:49 分类：问答How to split an array according to a condition in numpy?
For example, I have a ndarray that is: a = np.array([1, 3, 5, 7, 2, 4, 6, 8]) Now I want to split a into two parts, one is all numbers <5 and the other is all >=5:[详细]
2023-04-10 16:14 分类：问答How to repeat elements of an array along two axes?
I want to repeat elements of an array along axis 0 and axis 1 for M and N times respectively: import numpy as np[详细]
2023-04-10 13:11 分类：问答
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