python get index where true - PrivacyWall

https://stackoverflow.com/questions/16094563/numpy-get-index-wher...

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python - numpy get index where value is true - Stack Overflow

A simple and clean way: use np.argwhere to group the indices by element, rather than dimension as in np.nonzero(a) (i.e., np.argwhere returns a row for each non-zero element). [6], [7], [8], [9]]) np.argwhere(a) is almost the same as np.transpose(np.nonzero(a)), but it produces a result of the correct shape for a 0-d array.

https://numpy.org/doc/stable/reference/generated/numpy.where.html

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numpy.where — NumPy v2.2 Manual

Where True, yield x, otherwise yield y. Values from which to choose. x, y and condition need to be broadcastable to some shape. An array with elements from x where condition is True, and elements from y elsewhere. The function that is called when x and y are omitted. If all the arrays are 1-D, where is equivalent to:

https://www.statology.org/numpy-get-indices-where-true/

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NumPy: How to Get Indices Where Value is True - Statology

You can use the following methods to get the indices where some condition is true in NumPy: Method 1: Get Indices Where Condition is True in NumPy Array. Method 2: Get Indices Where Condition is True in NumPy Matrix. Method 3: Get Indices Where Condition is True in Any Row of NumPy Matrix.

https://www.codewithc.com/advanced-techniques-using-numpy-to-get-...

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Advanced Techniques: Using NumPy to Get Indices Where True - Code with C

First up, we have the trusty np.where() method. This gem allows us to locate the indices where our conditions hold true. It’s like having a personal data detective at your beck and call! Ah, Boolean indexing – the art of slicing and dicing data like a master chef!

https://www.adventuresinmachinelearning.com/mastering-boolean-ind...

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Mastering boolean indexing: getting indices for true conditions in ...

Learn how to use boolean indexing to get the indices for true conditions in NumPy arrays and matrices. See examples of one-dimensional and two-dimensional data, and how to apply conditions to specific rows or columns.

https://www.geeksforgeeks.org/python-get-indices-of-true-values-i...

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Python | Get indices of True values in a binary list

Let's discuss certain ways to get indices of true values in a list in Python. Method #1 : Using enumerate () and list comprehension enumerate () can do the task of hashing index with its value and couple with list comprehension can let us check for the true values.

https://codereview.stackexchange.com/questions/239213/find-start-...

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python - Find Start/Stop Indices Where Array Is True - Code Review ...

Here, the value in the first column is the start index and the value in the second column is the stop index. One solution that I have is: start.append(0) if y[i] and not y[i-1]: start.append(i) if i > 0 and (not y[i] and y[i-1]): stop.append(i-1) stop.append(len(y)-1) for i in range(len(y)): is an antipattern.

https://sqlpey.com/python/top-3-methods-to-locate-indices-of-true...

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Top 3 Methods to Locate Indices of True Values in NumPy

Another elegant way to find indices is through the numpy.argwhere() function. This function returns the indices in a way that organizes them by element rather than by dimension. print(argwhere_indices) The output will similarly show which values meet the criteria, providing a straightforward format: [2], [3], [4], [5], [6], [7], [8], ...

https://en.moonbooks.org/Articles/How-to-find-the-indexes-where-v...

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How to find indices where values are true in a boolean ... - Moonbooks

Example of how to find indices where values are true in a boolean matrix with numpy in python: Let's first create a random boolean matrix with False and True values. returns for example. To find indices where values are true, a solution is to use the numpy function where: returns. Create a loop. returns.

https://www.geeksforgeeks.org/numpy-where-in-python/

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numpy.where() in Python - GeeksforGeeks

By providing x and y as arguments, you can use numpy.where() to return different values depending on whether the condition is true or false. Here, the numpy.where() function checks the condition arr > 20. For elements that meet the condition, it returns 1, and for those that don't, it returns 0.

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