I have two equally long lists representing the start and end frames of an event. They look something like this: The next element of the START list is always going to be bigger than the previous element in the END lists a.k.a 118 is always going to be bigger than 113. I am trying to calculate the difference between the
Tag: numpy
How to convert a numpy array waveform into a wav file-like object?
I want to convert a numpy array waveform into a wav-like object so that I can upload it to S3 without having to save the waveform to file locally. Imagine I have a numpy array waveform, y, How can I convert this numpy array, y into a wav file-like object to upload to S3 using boto3’s upload_fileobj method? According to
Loading data from a file and converting into an array in Python
I am trying to load the data from a file. There are 3 rows and columns and I want to convert into an array A with shape (3,3). How do I go about doing it? The data looks like Data The array A should be Answer Following my comment, convert the file to a panda dataframe first to get rid
Scale/resize a square matrix into a larger size whilst retaining the grid structure/pattern (Python)
Like above, I want to retain the same ‘grid’ format whilst increasing the dimensions of the 2D array. How would I go about doing this? I assume the original matrix can only be scaled up by an integer n. Answer You can use numba if performance is of importance (similar post) with no python jitting and in parallel mode if
Tensorflow requires numpy version ~=1.19.2, matplotlib requires numpy version 1.23.0
I’d expect it to be a fairly common problem when installing a lot of python packages that there would be dependency collisions like package A depending on a certain version of package C and package B depending on another version of package C as a result of which both A and B cannot coexist in a project. In my case
Put nodes names to a graph with Networkx python
I created a graph G (network library) through the adjacency matrix A (numpy matrix) that stores the weights of the links. I also have the list of the names of the nodes but I don’t know how to assign the name to each node. How can I do? Answer You can loop over the nodes and append the label from
How to add noise to row/column selection in python
I want to select a specific row/column of a matrix i have, the twist however is that i want an added noise in the selection of the chosen row. Example I have a matrix m of size 100×100. I now want to select row 40 i.e. m[40,:]. What is actually wanted however is not an array with all values of
Divide into groups according to the specified attribute
I need to group the data in such a way that if the difference between the adjacent values from column a1 was equal to the same pre-specified value, then they belong to the same group. If the value between two adjacent elements is different, then all subsequent data belong to a different group. For example, I have such a data
remove background of RGB image (3D array) based on another array (boolean mask)
I’m stuck on what should be fairly straight forward, but other opened questions don’t see to address exactly the same issue i’m having. I’m trying to crop an image based on boolean mask. I can do this with: (This function inputs RGB image (w, h, c) and True/False mask of shape (w, h, n) and crops a bounding box around
Adding a full stop to text when missing
How to add a full stop to a text please? I am not able to get the desired combined text. Answer You can use where and cat: Result: (this also works for the case when text1 is given and text2 is NaN)