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Enhance Data Retrieval Accuracy with MatchType in TimeseriesRef #969

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salmagro
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This MR introduces the MatchType enumeration to TimeseriesRef, providing the option to choose between exact and nearest time matching. Changes include updates to the atTime and getRawIndexAtTime methods to support this new functionality.

For a detailed problem description see: #968

@facontidavide
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look at CI...

- Added an enumeration MatchType with options Exact and Nearest.
- Modified atTime and getRawIndexAtTime in TimeseriesRef to support MatchType, allowing callers to specify whether they need an exact timestamp match or the nearest available match.
- Adjusted the atTime method to throw an error when an exact match is required but not found, enhancing error handling for strict match requirements.
@salmagro
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I have resolved the compilation issues. However, I have a question regarding the proposal to pass an enum class MatchType to the atTime method.
Do we need to make any modifications when exposing this to Lua in this line https://github.com/facontidavide/PlotJuggler/blob/main/plotjuggler_base/src/reactive_function.cpp#L116?
How should the enum class MatchType be defined from Lua?

if (match_type == MatchType::Exact)
{
auto it = std::find_if(_plot_data->begin(), _plot_data->end(),
[t](const auto& point) { return point.x == t; });

Check notice

Code scanning / CodeQL

Equality test on floating-point values Note

Equality checks on floating point values can yield unexpected results.
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