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Python Data Type Q&A » numpy » unique

1. Finding a list of indices from master array using secondary array with non-unique entries stackoverflow.com

I have a master array of length n of id numbers that apply to other analogous arrays with corresponding data for elements in my simulation that belong to those id numbers ...

2. Efficient way to count unique elements in array in numpy/scipy in Python stackoverflow.com

I have a scipy array, e.g.

a = array([[0, 0, 1], [1, 1, 1], [1, 1, 1], [1, 0, 1]])

I want to count the number of occurrences of each unique element in ...

3. Find unique elements of floating point array in numpy (with comparison using a delta value) stackoverflow.com

I've got a ndarray of floating point values in numpy and I want to find the unique values of this array. Of course, this has problems because of floating point accuracy...so ...

4. How to select all locations of unique elements in numpy 2d array with bounding box around them? stackoverflow.com

I have a 2D numpy array I want to find the 'every' location of all the unique elements. We can find the unique elements using numpy.unique(numpyarray.). Here it comes the tricky ...

5. how to fill the start and the end of a unique entry with the same value in numpy array? stackoverflow.com

i have a 1D numpy array. Lets look at the following example

a = [255,1,255,255,1,255,255,255,2,2,255,255,255,2,2,3,255,255,255,3]

In the above array the unique entries are considered except the value which is 255. We want to ...

6. Finding unique points in numpy array stackoverflow.com

What is a faster way of finding unique x,y points (removing duplicates) in a numpy array like:

points = numpy.random.randint(0, 5, (10,2))

I thought of converting points to a complex numbers and then ...

7. Better way to find existence of arrays in list of arrays stackoverflow.com

I am a newbie to Python and trying out different ways to optimize and simplify my code. I have a list of arrays(necessarily in this format) initially empty, which I need to ...

8. Unique numpy arrays python-forum.org

Hello all, I would be grateful for your advice regarding something I tried to do using unique() but it didn't work. I have a two dimensional numpy array that looks like that (but much larger): >>> pop_A1 array([[10, 2, 10], [10, 9, 10], [10, 9, 10], [10, 9, 10], [10, 9, 10], [22, 9, 10], [10, 9, 10], [10, 9, 10], ...