Skip to main content

Get complete list up to the last unique value using Python and Pandas

My goal is to get the complete list up until the last unique value. Ideally, I would like methods for performing this operation Pythonically and using Pandas, but a single method solution will work great. Also, I need to preserve the ordering of the list.

Also, in my example shown below, the last unique value happens to be the largest value in the list. This is not necessarily true for my application. The last unique value in my list can take on any value; meaning, it could be the smallest, the largest, or any value in between.

Below I show the progress I have made so far.

import pandas as pd

data_dict = {"RAW": [4000076160, 5354368, 4641792, 4641792, 4289860736, 982783232, 2122384768,
                     4136386944, 5440384, 4772864, 4772864, 4289881216,                     
                     4270354816, 4293477248, 4286243840, 4286243840, 3400832, 982783232, 2122384768],
             "ADC_TYPE": [3, 7, 8, 8, 9, 10, 11,
                          3, 7, 8, 8, 9,                          
                          3, 7, 8, 8, 9, 10, 11]}

df = pd.DataFrame(data_dict)
print(df)

The returned DataFrame (i.e. df):

           RAW  ADC_TYPE
0   4000076160         3
1      5354368         7
2      4641792         8
3      4641792         8
4   4289860736         9
5    982783232        10
6   2122384768        11
7   4136386944         3
8      5440384         7
9      4772864         8
10     4772864         8
11  4289881216         9
12  4270354816         3
13  4293477248         7
14  4286243840         8
15  4286243840         8
16     3400832         9
17   982783232        10
18  2122384768        11

I can use the following piece of code, but it will not return the complete list up to the last unique value.

unique_types = df["ADC_TYPE"].unique().tolist()  # return type is python list
print(unique_types)

Which returns:

[3, 7, 8, 9, 10, 11]

My goal is to return:

[3, 7, 8, 8, 9, 10, 11]

I have searched through this forum and Google, but I have not found a solution to my problem thus far. I have found several examples that return a list of unique values, but not an example that returns the complete list up until the last unique value. Thanks!



source https://stackoverflow.com/questions/73476394/get-complete-list-up-to-the-last-unique-value-using-python-and-pandas

Comments

Popular posts from this blog

How to show number of registered users in Laravel based on usertype?

i'm trying to display data from the database in the admin dashboard i used this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count(); echo $users; ?> and i have successfully get the correct data from the database but what if i want to display a specific data for example in this user table there is "usertype" that specify if the user is normal user or admin i want to user the same code above but to display a specific usertype i tried this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count()->WHERE usertype =admin; echo $users; ?> but it didn't work, what am i doing wrong? source https://stackoverflow.com/questions/68199726/how-to-show-number-of-registered-users-in-laravel-based-on-usertype

Why is my reports service not connecting?

I am trying to pull some data from a Postgres database using Node.js and node-postures but I can't figure out why my service isn't connecting. my routes/index.js file: const express = require('express'); const router = express.Router(); const ordersCountController = require('../controllers/ordersCountController'); const ordersController = require('../controllers/ordersController'); const weeklyReportsController = require('../controllers/weeklyReportsController'); router.get('/orders_count', ordersCountController); router.get('/orders', ordersController); router.get('/weekly_reports', weeklyReportsController); module.exports = router; My controllers/weeklyReportsController.js file: const weeklyReportsService = require('../services/weeklyReportsService'); const weeklyReportsController = async (req, res) => { try { const data = await weeklyReportsService; res.json({data}) console...

ValueError: X has 10 features, but LinearRegression is expecting 1 features as input

So, I am trying to predict the model but its throwing error like it has 10 features but it expacts only 1. So I am confused can anyone help me with it? more importantly its not working for me when my friend runs it. It works perfectly fine dose anyone know the reason about it? cv = KFold(n_splits = 10) all_loss = [] for i in range(9): # 1st for loop over polynomial orders poly_order = i X_train = make_polynomial(x, poly_order) loss_at_order = [] # initiate a set to collect loss for CV for train_index, test_index in cv.split(X_train): print('TRAIN:', train_index, 'TEST:', test_index) X_train_cv, X_test_cv = X_train[train_index], X_test[test_index] t_train_cv, t_test_cv = t[train_index], t[test_index] reg.fit(X_train_cv, t_train_cv) loss_at_order.append(np.mean((t_test_cv - reg.predict(X_test_cv))**2)) # collect loss at fold all_loss.append(np.mean(loss_at_order)) # collect loss at order plt.plot(np.log(al...