Find leading and trailing valleys adjacent to 1-D local maxima with Python
The objective is to find the leading and trailing valleys from a list of local maxima in a 1-D signal, as illustrated in the figure below
numpy
How to insert zero in an array at that index, which is exceeding the size of that array?
I want to insert zero at certain locations in an array, but the index position of the location exceeds the size of the array
Creating new columns that contain the value of a specific index
I have tried multiple methods that get me to a point close to but not exactly where I want to be with the final output. I am trying to first create a few columns that contain a specific within the raw dataframe based on it’s position, afterwards I am trying to make a particular row the header row and skip all the rows that were above it.
NumPy array row differences
I have a NumPy array vectors = np.random.randn(rows, cols). I want to find differences between its rows according to some other array diffs which is sparse and “2-hot”: containing a 1 in its column corresponding to the first row of vectors and a -1 corresponding to the second row. Perhaps an example shall make it clearer:
Why my graph is showing incorrect minima, using np.linspace or np.array and poorly?
I am trying to learn multivariate optimisation and was trying to plot a graph of $2x^2 + y^2$ vs a plane which is restricted between (-1,1) – essentially a square. This is the code snippet for the same
how to calculate correlation coefficient for a scatter-plot in scipy
i am trying to calculate the correlation coefficient for a scatterplot with scipy, the thing is, i have a kind of complex dataset in an ndarray, and the basic syntax does not work for me…
Find the price from a pricelist with scales
In python I am trying to lookup the relevant price depending on qty from a list of scale prices. For example when getting a quotation request:
numpy “insert” does not insert anything
I have issues with the Numpy python library in inserting date to the array. Here is the code that I have a problem with:
creating multiple columns in a for loop python
I’m new to Python.
I’m trying to create multiple columns in a for loop but I’m having trouble with it.
I have several columns and I’m trying to create a new column that shows whether or not the elements in ohlcs is greater than elements in metrics. I can do it to create one column but I want to save time since I plan on doing the same function but for different variables.