rescale – Tarik Billa

SKLearn MinMaxScaler – scale specific columns only [duplicate]

June 1, 2023 by Tarik

Demo: In [90]: df = pd.DataFrame(np.random.randn(5, 3), index=list(‘abcde’), columns=list(‘xyz’)) In [91]: df Out[91]: x y z a -0.325882 -0.299432 -0.182373 b -0.833546 -0.472082 1.158938 c -0.328513 -0.664035 0.789414 d -0.031630 -1.040802 -1.553518 e 0.813328 0.076450 0.022122 In [92]: from sklearn.preprocessing import MinMaxScaler In [93]: mms = MinMaxScaler() In [94]: df[[‘x’,’z’]] = mms.fit_transform(df[[‘x’,’z’]]) In [95]: df … Read more

Resize image, maintain aspect ratio

February 12, 2023 by Tarik

Here we go: Dimension imgSize = new Dimension(500, 100); Dimension boundary = new Dimension(200, 200); Function to return the new size depending on the boundary: public static Dimension getScaledDimension(Dimension imgSize, Dimension boundary) { int original_width = imgSize.width; int original_height = imgSize.height; int bound_width = boundary.width; int bound_height = boundary.height; int new_width = original_width; int new_height … Read more