TimeseriesTools

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MoreMaps.jl ​

A flexible mapping framework for Julia that provides different parallel backends, progress tracking, and iteration patterns.

Features ​

  • Multiple backends: Sequential, Threads, Distributed, and Dagger execution

  • Progress tracking: Support for various progress-logging backends

  • Nested array support: Map over specific leaf types in nested array structures

  • Cartesian expansions: Easy cartesian product iterations

Quick Start ​

julia
using MoreMaps

# Basic usage with default sequential backend
x = rand(100)
C = Chart()
y = map(sqrt, C, x)

# Use threading for parallel execution
C_threaded = Chart(Threaded())
y_threaded = map(sqrt, C_threaded, x)

# Add progress tracking
C_progress = Chart(Threaded(), LogLogger(10))
y_progress = map(sqrt, C_progress, x)
100-element Vector{Float64}:
 0.5254885290882129
 0.8475736973719847
 0.8051960669031756
 0.9974847199361225
 0.6295096013654823
 0.5482719862175252
 0.9006157783360864
 0.6539170063711927
 0.6111184200405134
 0.7782274358212425
 ⋮
 0.9836960749984547
 0.7465732525092232
 0.7257746980697865
 0.5843321763161453
 0.3497091284553465
 0.08416433358896538
 0.827186032449822
 0.8838418178762875
 0.7386407307199285

Basics ​

The basis of a MoreMaps map is the Chart type, which configures how mapping operations are executed.

A Chart has the following fields:

  • backend: Specifies the execution backend

  • progress: Configures the progress logging behavior

  • leaf: Defines the element type where recursion terminates, for mapping nested arrays

  • expansion: Determines the expansion strategy (e.g. Cartesian product)

A chart can be constructed using keywords or arbitrary-order positional arguments. The default Chart() reproduces Base.map(), and is constructed as:

julia
C = Chart(backend=Sequential(),    # No parallel execution; similar to Base.map
          progress=NoProgress(),   # No progress logging
          leaf=MoreMaps.All,                # Map over each element of the root array, like Base.map
          expansion=NoExpansion()) # Map over the original input arrays, as for Base.map

# Or
C = Chart(Sequential(), NoProgress(), MoreMaps.All, NoExpansion()) # In any order

# Default behavior
C == Chart()

Mapping ​

Once you have a Chart, pass it to the standard Base.map function:

julia
using MoreMaps

x = rand(10)
C = Chart()
y = map(sqrt, C, x)
y == map(sqrt, x)
true

See the following pages for details on configuring a Chart:

  • Backends - Execution strategies (Sequential, Threaded, Distributed, Dagger)

  • Progress - Progress tracking options

  • Leaves - Nested array handling

  • Expansions - Cartesian product iterations