I have parameters of circle on a image: radius and coordinates of center. Is it possible to return the location of pixels along a circle? I need to get the all pixel values along the circle line. I tried get coordinates by next solution: But if angle is not agreed with radius I miss neighboring pixsels: Answe…
Tag: python
Elastic collision simulation
I’m trying to simulate elastic collision using the One-dimensional Newtonian equation (https://en.wikipedia.org/wiki/Elastic_collision) with pygame. The thing is that even if I transcribed the solved equation to change the velocity of the 2 bodies, it is not working (or probably there is something wrong…
Import large .tiff file as sparse matrix
I have a large .tiff file (4.4gB, 79530 x 54980 values) with 1 band. Since only 16% of the values are valid, I was thinking it’s better to import the file as sparse matrix, to save RAM. When I first open it as np.array and then transform it into a sparse matrix using csr_matrix(), my kernel already cras…
Flask-SQLAlchemy Error – AttributeError: ‘NoneType’ object has no attribute ‘append’
Below I have defined SQLAlchemy models for a table containing companies and a table containing contracts. Each company can have many contracts while each contract can belong to one company (one to many relationship). This relationship is modelled by contracts = db.relationship(‘ContractModel’, bac…
Deduplicate numpy array by another array
I have two numpy arrays: a is the index of items, and b is the score of corresponding items. Now I want to sort these items descendingly by the scores in b while only keeping the largest score of a single item. The results should be the non-duplicated item index a_new and the score of these items b_new. In th…
How to extract a table from website without specifying the web browser in python
I’m trying to automate data extraction from ASX (https://www.asxenergy.com.au/futures_nz) website into my database by writing a web scraping python script and deploying it in Azure Databrick. Currently, the script I have is working in Visual Studio Code, but when I try to run it in databrick, it crashes…
Python- Generate schema from file using TableSchema
I am trying to generate a schema from a csv file using TableSchame package. Gives me “raise exceptions.SourceError(message) tabulator.exceptions.SourceError: Only callable returning an iterator is supported” How do i get the Table to work with a csv file? Answer Table can be used by directly passi…
How to fix failed assertion `output channels should be divisible by group’ when trying to fit the model in Keras?
I’m trying to use ImageDataGenerator() for my image datasets. Here is my image augmentation code: Then use that plug into my model: Use EarlyStopping: Compile and Fit the model: That is when the code crash, and gives this error message. I try to change the output neurons but that doesn’t work. I d…
Azure DevOps: How to download a file from git using REST API?
Following the example here: https://learn.microsoft.com/en-us/rest/api/azure/devops/git/items/get?view=azure-devops-rest-6.1 I can query a dev ops organization and get a response like so: How can I use Python to, I guess, download that url? The file should be an XML file. I want to read (download) it directly…
Auto update model value based on another value in this model django
I have a model called Products. This model has values like this How can I change display to be False if stock is equal to 0 automatically, so when client buys last product in store display value will change from True to False and will result in products that I want to show or are in stock. I know that