How to Extract Multiple Columns from NumPy 2D Matrix?
The numpy package is a powerful toolkit for Python. With numpy you can easily do matrix (like Matlab), plot and do other data/numbers/statistics. Suppose you have a two dimensional …
Tag: programming
RandomFloatRange Function in Delphi/Object Pascal
In Delphi/Object Pascal, the random function returns a float number that is between 0 and 1 inclusive. If you want to get a random number between two float numbers …
Require Re-login After User Stays Inactive For More Than 30 Minutes (PHP)
You must have seen websites ask for re-login if you have been idle for too long. For example, most online banking system will set an inactive time limit. This …
How to Plot 3D Line Vectors in Matlab Using quiver3 ?
The Matlab is a very sophisticated mathematics tool that can help you analyse, visualize and process data. Almost all researchers rely on this tool and it saves you tons …
FillInteger Implementation in Delphi/Object Pascal
This post gives a few C++ implementations that fill an array of integers by every 4 byte. Please note that the function FillChar works on the byte level (filling …