I have a n-long list of arrays. Each array consists of two columns: A) index values between 1-500 B) measured values Each A column is slightly different (i.e. missing or having extra values). I want to create single large array where i) there is single A (index) column consisting of all the index values and i…
Tag: arrays
converting a tree array to a specific string (chemical formulas) (py)
I have a specific kind of array which looks often like this: and I want to convert it to something like Ca3(PO4)2. Could someone help me? I tried a lot of techniques, but the code gets always really messy. I do not know what am i doing wrong. I use python by the way. P.S.: if anything’s wrong, tell me
How to use a dictionary to modify an array in python
I am trying to use a dictionary (created by reading the content of a first file) to modify the content of an array(created by reading the content of a second file) in order to return as many modified arrays as their are keys in the dictionary with the modification corresponding the position and change in the …
How would I sort averages by row and/or column of an array?
I’ve been having trouble with finding the average of an array of lists, specifically by row and by column. I know what I want to do with it, but I’m struggling with finding what kind of code to write for it. The array is as follows: By row, I want to essentially find the averages of each individua…
saving appended list/dictionary to pandas dataframe
I am working on a code like below, which slices the address column. For this I have created a dictionary and created an empty list final to append all the pre processing.see code After preprocessing I am appending the empty list. Now, I want to update the df_dict with the final list. and convert the df_dict t…
Remove substring in array of strings column in dataframe
I have dataframe column which is array of strings I want to get result like I want to remove substring ‘fruit=’ Answer You can apply a function to the column. In this case split each string by = and take the last element of the result.
How can I extract values from a 3D numpy array using a 2D numpy array with indices?
I have two numpy arrays of the following shapes, and I need to extract values from a 3D array using stored indices from a 2D one: vals = (65, 65, 3500) This contains 3500 values that were calculated in a 65×65 grid, from which I need to extract values indices = (65, 65) This contains the indices of the m…
Can I sort two related arrays in parallel using python?
I have two NumPy arrays with the shape (74395, 1) storing float values where arr1[0] correlates to arr2[0] and so on. I would like to sort them together in ascending order by the values stored in the second array. As an example: wanted result: How could I do that in python? Answer Use numpy.argsort with numpy…
How can I assign a variable from a string inside a json dictionary?
This is my get output on each asset im getting data back from I can access the dictionary values easily, but how doo i access the value of the array, i want to be able to add up each critical vulnerability this is the return, im trying to get critical, moderate, severe values from the vulnerabilities sub arra…
How to efficiently filter a large python list?
I have a relatively large array called allListings and want to filter out all rows where allListings[:][14] == listingID. This is the code I am using: tempRows = list(filter(lambda x: x[14] == listingID, allListings)) The filtering is repeated in a for loop for all different listingID Profiling shows, that th…