6 repository-uri
Operations to swap or update existing values within a specific column.
Distinct from Column Value Extraction: Closest candidates focus on extraction or sentinel replacement; this is general-purpose value swapping in tabular data.
Explore 6 awesome GitHub repositories matching data & databases · Column Value Replacements. Refine with filters or upvote what's useful.
This project is an educational resource and a collection of instructional materials for performing data manipulation and statistical analysis using Python. It provides a comprehensive set of guides and code examples for using the Pandas, NumPy, and Matplotlib libraries to analyze structured data. The resource includes a dedicated guide for reshaping, cleaning, and aggregating tabular data and time series via Pandas, alongside a reference for high-performance vectorized operations and linear algebra using NumPy. It also features tutorials for creating publication-quality charts, distribution p
Swaps specified values across a dataset to standardize markers and labels.
This project is a comprehensive library of practical Python code examples and patterns. It provides a collection of scripts and snippets designed to demonstrate a wide range of programming tasks, from basic syntax to advanced implementation patterns. The repository focuses on several core domains, including the implementation of concurrency and multithreading examples, data analysis snippets for cleaning and manipulating tabular data, and various data visualization examples. It also covers automation scripts for file system management and a variety of general programming patterns. Additional
Transforms categorical data into numerical values by applying a mapping dictionary to a column.
Ibis is a portable Python dataframe library and multi-backend query engine that provides a unified interface for executing data transformations across diverse compute engines. It functions as a Python SQL expression compiler and dialect transpiler, allowing users to define data logic once and execute it across cloud warehouses, embedded databases, and distributed clusters without rewriting code. The project distinguishes itself through a database backend abstraction that decouples transformation logic from the underlying execution engine. It enables polyglot data workflows by mixing raw SQL s
Creates new columns from existing data or constant literal values.
Pinot is a distributed, columnar analytical database designed for high-concurrency, low-latency query processing. It functions as a real-time OLAP datastore, enabling interactive, user-facing analytics by ingesting and querying massive datasets from both streaming and batch sources. The system architecture relies on a centralized controller for cluster coordination and a distributed segment-based storage model to ensure horizontal scalability. The platform distinguishes itself through a hybrid ingestion pipeline that unifies real-time event streams and historical batch data into a single quer
Enables the definition of virtual fields using expressions to transform or calculate data values dynamically during query execution.
Acest proiect este un framework de procesare a datelor tabelare de înaltă performanță pentru R, conceput pentru a gestiona seturi de date masive cu eficiență a memoriei și viteză. Oferă o structură de date îmbunătățită care utilizează semantica de referință și modificarea in-place pentru a efectua transformări complexe fără overhead-ul copierii inutile a obiectelor. Biblioteca se distinge prin optimizările sale arhitecturale de nivel scăzut, inclusiv procesarea paralelă multi-threaded, sortarea bazată pe radix și parsarea fișierelor mapate în memorie. Prin descărcarea rutinelor critice de manipulare și agregare a datelor către cod C compilat, permite execuția rapidă a sarcinilor care altfel ar fi costisitoare din punct de vedere computațional. Motorul său de bază suportă operațiuni relaționale avansate, cum ar fi join-uri non-equi, rolling și intervale suprapuse, alături de indexarea secundară automată pentru a accelera accesul repetat la date. Dincolo de capabilitățile sale primare de procesare, proiectul oferă o suită cuprinzătoare de instrumente pentru gestionarea ciclului de viață al datelor. Aceasta include utilitare de ingestie și serializare de mare viteză cu detectare automată a tipului, precum și suport specializat pentru analiza seriilor temporale și agregarea multidimensională. Framework-ul este construit pentru a scala, permițând utilizatorilor să efectueze operațiuni complexe de grupare, filtrare și remodelare pe seturi de date care conțin miliarde de rânduri, menținând în același timp stabilitatea și performanța sistemului.
Evaluates logical conditions to replace values within columns based on specified criteria.
DataFrame is a C++ tabular data library and manipulation engine designed for managing heterogeneous data in contiguous memory. It functions as a statistical analysis framework and time series analysis toolkit, providing the means to store, index, and transform multidimensional datasets. The project distinguishes itself through a high-performance execution model that utilizes column-major storage, SIMD-aligned memory allocation, and a thread-pool for parallel computations. It employs a visitor-based algorithm dispatch system and policy-driven transformations to decouple data processing logic f
Allows swapping existing values in a column or the index with new values.