SuperJupiter Trend

Consolidated library available

For new projects, start with SuperJupiter Sensor Toolkit. This standalone package and its published releases remain available. Existing installations need no change.

If migrating with PlatformIO, replace the standalone dependency with:

lib_deps = superjupiter/SuperJupiterSensorToolkit@0.1.0

Replace this standalone include:

#include <SuperJupiterTrend.h>

with this consolidated include:

#include <SuperJupiter/SensorToolkit/Trend.h>

The component namespace and behaviour are preserved from standalone 0.1.1. If using an earlier version, review its API migration requirements first. Use one implementation of this component per application; do not mix standalone and consolidated copies.

See the consolidated migration guide and consolidated README for Arduino/CMake installation. Hardware validation pending.

Timestamp-aware least-squares slopes with explicit coverage and gaps.

Version 0.1.1: evolving preview. Hardware validation pending.

Original MIT-licensed portable C++11 by SuperJupiter. No mandatory service, hidden clock reads, network calls or heap allocation in the core.

What it does

Fixed-capacity last-N finite samples; rejected inputs do not evict history. Timestamps must advance by 1..2^31-1 milliseconds. Regression uses elapsed seconds relative to the oldest sample. summary requires minSamples, minSpanMs and no retained adjacent interval above maxGapMs. Slope is value units per second; intercept is the fitted value at the oldest retained sample. This is descriptive linear regression, not a forecast or statistical confidence estimate. O(N) summary.

Install

PlatformIO exact release (after registry publication):

lib_deps = superjupiter/SuperJupiterTrend@0.1.1

Arduino: use the versioned GitHub release ZIP. Library Manager registration and index propagation are separate steps; check the official index before relying on IDE availability.

Example

#include <SuperJupiterTrend.h>
using namespace superjupiter::trend;
int main() {
Trend<8> trend(Config(3,200,1000));
trend.push(20,0);trend.push(21,100);trend.push(22,200);
Result result=trend.summary();
(void)result;
return 0;
}

For Arduino, open examples/Minimal. It uses synthetic data only. Results are deliberately local so applications can inspect outcomes before adding I/O.

CMake

add_subdirectory(path/to/superjupiter-trend)
target_link_libraries(your_app PRIVATE SuperJupiter::Trend)

For an installed package use find_package(SuperJupiterTrend 0.1 CONFIG REQUIRED). Top-level CMake builds tests/examples; a subproject does not enable developer tools by default.

Documentation and verification

• API and boundaries
• Tests
• Validation status
• Shared conventions
• Migration policy

cmake -S . -B build/cmake
cmake --build build/cmake
ctest --test-dir build/cmake --output-on-failure
python3 tools/check_release.py --tag v0.1.1

Keep raw observations and their provenance in your application. Derived results are not physical truth. Do not use fast-math or finite-math-only compiler assumptions. AVR double may have float precision. Software tests, board compilation and physical validation are reported separately.

Fits the SuperJupiter measurement portfolio

Complements SensorQuality and SampleWindow without a required dependency. Each component can be used independently. Domain models, customer data and proprietary applications are excluded.

Support and licence

MIT. Report reproducible bugs through repository issues; private security reports: info@superjupiter.net. Include version, configuration, inputs, expected and observed behaviour. No credentials or private customer data.

Compatibility review 0.1.1

This patch includes independent regression tests and a reviewed interoperability contract. Hardware validation pending.

• Removed unused duplicated math helpers and unnecessary includes.
• Capacity-two default works; summary reports invalid config; ring indexing avoids size_t overflow.