How do I represent data of undeterminate size?

[Riser777]

I'm still new to ImPlot and ImGui in general, but this library seems to have everything I could possibly want for my current project and more, except for one problem:

I want to chart a plot for a data set from a file where the size of said data set varies greatly each time, could be a few thousand elements, could be over a million, but the plot methods don't accept vectors as arguments, only arrays, and I really don't want to allocate a lot of space that I won't end up using, is there anyway around this? Or do I have to possibly modify the source code and write my own plot methods?

[epezent]

Unless I'm misunderstanding your problem, you can just pass a pointer to the underlying data of your std::vector like so:

std::vector xs = ...;
std::vector ys = ...;
...
if (ImPlot::BeginPlot("My Plot")) {
    ImPlot::PlotLine("My Line", xs.data(), ys.data(), xs.size()); // assuming xs and ys are same size!
    ImPlot::EndPlot();
}

Generally speaking, this is quite typical when a function calls for a T* and your data is contained in a std::vector<T> (or evenstd::array).

[Riser777]

I guess it was that simple huh?
Completely forgot about the data() function.
Thank you.