python - How to use np.vectorize? - Stack Overflow
Feb 13, 2021 · Isn't the answer to How to use np.vectorize? usually "Don't. It just pretends to be a vectorized function but is just a loop with a different name"?
How can I vectorize an image using Python? - Stack Overflow
Dec 15, 2021 · How can I convert an image to a vectorised form? Normal image: Vectorised Image: I implemented image segmentation using the SLIC method. The result is close to the desired outcome …
simd - What is "vectorization"? - Stack Overflow
Sep 14, 2009 · Many CPUs have "vector" or "SIMD" instruction sets which apply the same operation simultaneously to two, four, or more pieces of data. Modern x86 chips have the SSE instructions, …
Using Numpy Vectorize on Functions that Return Vectors
The purpose of np.vectorize is to transform functions which are not numpy-aware (e.g. take floats as input and return floats as output) into functions that can operate on (and return) numpy arrays.
0-dimensional array problems with `numpy.vectorize`
Feb 18, 2025 · 2 numpy.vectorize conveniently converts a scalar function to vectorized functions that can be applied directly to arrays. However, when inputting a single value into the vectorized function, …
python - Performance of Pandas apply vs np.vectorize to create new ...
Oct 6, 2018 · I am using Pandas dataframes and want to create a new column as a function of existing columns. I have not seen a good discussion of the speed difference between df.apply() and …
Most efficient way to map function over numpy array
Feb 5, 2016 · What is the most efficient way to map a function over a numpy array? I am currently doing: import numpy as np x = np.array ( [1, 2, 3, 4, 5]) # Obtain array of square ...
How to vectorize with gcc? - Stack Overflow
Jan 3, 2009 · The v4 series of the gcc compiler can automatically vectorize loops using the SIMD processor on some modern CPUs, such as the AMD Athlon or Intel Pentium/Core chips. How is this …
How to vectorize operations in pandas data frame? - Stack Overflow
Dec 29, 2023 · How to vectorize operations in pandas data frame? Asked 2 years ago Modified 2 years ago Viewed 190 times
gcc - -ftree-vectorize option in GNU - Stack Overflow
Nov 6, 2015 · With the GCC compiler, the -ftree-vectorize option turns on auto-vectorization, and this flag is automatically set when using -O3. To what level does it vectorize?