Plot

Overview

class omdi::Plot

Abstract base class for different types of plots.

The omdi::Plot class defines a minimal interface for plotting objects in the omdi framework. Concrete plot types such as omdi::ScatterPlot and omdi::PcolorPlot derive from this base class and implement the pure virtual omdi::Plot::plot() method.

Each plot has a string label that can be used as a title or identifier in ImGui/ImPlot contexts.

Data members

std::string omdi::Plot::m_label

Label used to identify the plot (e.g. as a title in ImPlot).

Defaults to "GenericPlot" if no label is provided to the constructor.

Constructor

omdi::Plot::Plot(const std::string &label = "GenericPlot")

Construct a plot with the given label.

Parameters:

label – Human-readable label for the plot (default: "GenericPlot").

Public interface

virtual void omdi::Plot::plot() = 0

Pure virtual function that renders the plot.

Concrete subclasses must implement this method to perform the actual drawing using ImGui/ImPlot or other rendering backends.

const std::string &omdi::Plot::label() const

Get the label associated with the plot.

Returns:

Constant reference to the internal label string.

DataPlot<T>

template<typename T>
class omdi::plots::DataPlot

Base class template for plots that own their data.

omdi::plots::DataPlot provides data storage and management for concrete plot types such as omdi::ScatterPlot and omdi::PcolorPlot. It holds a named map of datasets of type T and a corresponding map of per-series plot specifications (ImPlotSpec).

Concrete plot classes inherit from both omdi::Plot and DataPlot<T>, gaining the rendering interface from the former and the data management interface from the latter.

Data members

std::map<std::string, T> omdi::plots::DataPlot::m_data

Map of named datasets owned by the plot.

Keys are user-assigned dataset labels; values are data objects of type T (e.g., omdi::Points or omdi::GridXY).

std::map<std::string, ImPlotSpec> omdi::plots::DataPlot::m_specs

Map of per-series plot specifications.

Each entry associates a dataset label with an ImPlotSpec that controls how the corresponding series is rendered (e.g., colormap, line style).

Constructor

template<typename T>
omdi::plots::DataPlot<T>::DataPlot(const std::map<std::string, T> &data = {})

Construct a DataPlot with an optional initial set of named datasets.

Parameters:

data – Map of initial datasets (default: empty). Each entry is copied into omdi::plots::DataPlot::m_data.

Public interface

template<typename T>
void omdi::plots::DataPlot<T>::update(const std::string &label, T data)

Replace or insert a single named dataset.

Parameters:

• label – Name of the dataset to update.

• data – New data value (copied by value).

If a dataset with the given label already exists it is replaced; otherwise a new entry is created.

template<typename T>
void omdi::plots::DataPlot<T>::update_all(std::map<std::string, T> new_data)

Replace all datasets at once.

Parameters:

new_data – Map of new datasets. Replaces the entire contents of omdi::plots::DataPlot::m_data.

template<typename T>
auto omdi::plots::DataPlot<T>::set_spec(const std::string &label, const ImPlotSpec &spec) -> void

Set the plot specification for a named series.

Parameters:

• label – Dataset label to associate the spec with.

• spec – ImPlotSpec controlling the visual appearance of the series.

template<typename T>
auto omdi::plots::DataPlot<T>::get_spec(const std::string &label) const -> ImPlotSpec

Get the plot specification for a named series.

Parameters:

label – Dataset label whose spec to retrieve.

Returns:

The ImPlotSpec associated with label.