[Solved] Is QwtRasterData the right Qt device for displaying the data received from get_googlemap?

Question

QwtRasterData is an abstract class that defines an interface to gridded data for display in the Qwt framework.

There exists a subclass, QwtMatrixRasterData that lets you create raster objects with actual values in them from a QVector of doubles using the setValueMatrix method.

You could write another subclass QwtRdaRasterData that defines the methods of the parent class to read data from a .rda object containing a saved object. It would have to know about the way that the object is saved, and read in the .rda file and store it in C++ objects.

You didn’t think that just because the docs said “any type of raster data” that it meant “every type of raster data” did you?

Accepted Answer

QwtRasterData is an abstract class that defines an interface to gridded data for display in the Qwt framework.

There exists a subclass, QwtMatrixRasterData that lets you create raster objects with actual values in them from a QVector of doubles using the setValueMatrix method.

You could write another subclass QwtRdaRasterData that defines the methods of the parent class to read data from a .rda object containing a saved object. It would have to know about the way that the object is saved, and read in the .rda file and store it in C++ objects.

You didn’t think that just because the docs said “any type of raster data” that it meant “every type of raster data” did you?