Documentation is lacking regarding building your own dataset and passing it on to a graph about wisteria-dataviz

[Blake-Madden]

Please refer to here:

https://github.com/Blake-Madden/Wisteria-Dataviz/blob/main/BuildingData.md

Does this help?

[LEOcab]

Please refer to here:

https://github.com/Blake-Madden/Wisteria-Dataviz/blob/main/BuildingData.md

Does this help?

No... That's the guide I followed initially before putting my project aside to try and understand how the demo works. Look, this is what I have so far. Where did I screw up?

		double *data = ... data points ...
		time_t *times = ... timestamps ...
		
		auto yData = make_shared<Data::Dataset>();
		
		yData->AddContinuousColumn(L"AVG_GRADE");
		yData->AddCategoricalColumn(L"WEEK_NAME");
	 
		for (int p = 0; p < size; p++)
			yData->AddRow(Data::RowInfo().Continuous({ data[p] }).Categoricals({ 0 }));
		
		for (int p = 0; p < size; p++)
			yData->AddRow(Data::RowInfo().Dates({ wxDateTime(times[p]) }));
			
		// set the string labels for the codes in the grouping column
		yData->GetCategoricalColumn(L"WEEK_NAME")->GetStringTable() =
			{ { 0, L"Week" } };
		
		Canvas *canvas = new Canvas(m_panel1, wxID_ANY, wxDefaultPosition, m_panel1->GetSize(), wxALL | wxEXPAND);
		
		auto linePlot = std::make_shared<Graphs::LinePlot>(canvas,
			// use a different color scheme
			std::make_shared<Colors::Schemes::Decade1960s>(),
			// or create your own scheme
			// std::make_shared<Colors::Schemes::ColorScheme>
			//     (Colors::Schemes::ColorScheme{
			//         ColorBrewer::GetColor(Colors::Color::Auburn),
			//         ColorBrewer::GetColor(Colors::Color::OctoberMist) }),

			// turn off markers by using a shape scheme filled with blank icons
			// (having just one icon in this scheme will get recycled for each line)
			std::make_shared<Icons::Schemes::IconScheme>(Icons::Schemes::IconScheme{ Icons::IconShape::Blank }));
		// add padding around the plot
		linePlot->SetCanvasMargins(5, 5, 5, 5);

		// Set the data and use the grouping column from the dataset to create separate lines.
		// Also, use a categorical column for the X axis.
		linePlot->SetData(linePlotData, L"AVG_GRADE", L"WEEK_NAME");

		// add some titles
		linePlot->GetTitle().SetText(_(L"Average Grades"));
		linePlot->GetSubtitle().SetText(_(L"Average grades taken from\n"
										   "last 5 weeks' spelling tests."));
		linePlot->GetCaption().SetText(_(L"Note: not all grades have been\n"
										  "entered yet for last week."));
		// remove default titles
		linePlot->GetBottomXAxis().GetTitle().SetText(L"");
		linePlot->GetLeftYAxis().GetTitle().SetText(L"");

		// add the line plot and its legend to the canvas
		canvas->SetFixedObject(0, 0, linePlot);
		canvas->SetFixedObject(0, 1,
			linePlot->CreateLegend(
				Graphs::LegendOptions().
					IncludeHeader(true).
					PlacementHint(LegendCanvasPlacementHint::RightOfGraph)) );

This code throws an exception about the Y column not existing.

[Blake-Madden]

You should combine the loops into one like this:

for (int p = 0; p < size; p++)
    yData->AddRow(Data::RowInfo().Continuous({ data[p] }).Categoricals({ 0 }).Dates({ wxDateTime(times[p]) }));

You need to fill a row in one call.

That's at least part of the problem, I'll look into this further this evening.

[Blake-Madden]

You are not passing the dataset that you filled with data to the line plot. You're passing the wrong dataset. The dataset being filled from your arrays is yData, but here is what you are sending to the graph:

linePlot->SetData(linePlotData, L"AVG_GRADE", L"WEEK_NAME");

Try passing yData instead of linePlotData.