I have two python lists of strings that I would like to compare. The first is my main list, containing a series of long codes. The second is a list of partial strings. The desired result is a mask of list 1, populated by the substrings from list two. If no match is found, list3 can return 0, np.nan, ‘-&…
Tag: numpy
error: (-215:Assertion failed) scn + 1 == m.cols in function ‘cv::perspectiveTransform’
Below is a python script that calculates the homography between two images and then map a desired point from one image to another However, when i display the image that contains the mapped point it returns the following error: According to my knowledge this error means that parameter assigned to the function …
TF.Keras model.predict is slower than straight Numpy?
Thanks, everyone for trying to help me understand the issue below. I have updated the question and produced a CPU-only run and GPU-only of the run. In general, it also appears that in either case a direct numpy calculation hundreds of times faster than the model. predict(). Hopefully, this clarifies that this…
ValueError: Failed to convert a NumPy array to a Tensor (Unsupported object type numpy.ndarray). in trying to predict tesla stock
In the end you can see that i have tried converting this into a numpy array but I don’t understand why tensorflow dosen’t support it? I have looked at the other related pages but none seemed to help. Is there some other format i have to do to the data in order to properly fit in model? this is wha…
Not able to install jaxlib
I am trying to install jaxlib on my windows 10 by the following command which I found on the documentation.. pip install jaxlib It shows the following error Answer Jaxlib is not supported on windows you can see it here.. https://github.com/google/jax/issues/438
What does numpy.ix_() function do and what is the output used for?
Below shows the output from numpy.ix_() function. What is the use of the output? It’s structure is quite unique. Answer According to numpy doc: Construct an open mesh from multiple sequences. This function takes N 1-D sequences and returns N outputs with N dimensions each, such that the shape is 1 in al…
calling list() method over array of one element raises TypeError: iteration over a 0-d array
calling list() method over pandas dataframe single row raises an error. For example, Now, the below is fine but, raises: How to address this issue? Answer You can use pd.Series.tolist() here.
Why is ‘scipy.sparse.linalg.spilu’ less efficient than ‘scipy.linalg.lu’ for sparse matrix?
I posted this question on https://scicomp.stackexchange.com, but received no attention. As long as I get answer in one of them, I will inform in the other. I have a matrix B which is sparse and try to utilize a function scipy.sparse.linalg.spilu specialized for sparse matrix to factorize B. Could you please e…
Running numpy using anaconda and VS Code
I am trying to get VScode to work with anaconda but having issues with numpy. I have managed to get VScode to use the right python environment From VScode (ctrl+shift+P, type Python:Select Interpreter and select the appropriate option). However, when I type “import numpy” in to my script, I get th…
Improvement on copy array elements numpy
I have a question regarding variable assignation and memory allocation in a simple case. Imagine that I am initialising a state vector x, with initial value x0. I am then making iterative updates on that state vector with buffer array X and after each iteration, I store the new state vector in a storage list …