DVS::IPlotChunk Class Reference

Get data for plot chunk.

This method retrieves data for the plot chunk. It should be first called with non nullptr num_values to get the size of the individual x and y axis values arrays. Example usage: DVS::IPlotChunk* plot = //get object instance uint32_t axis_size = 0; if (DVS_NONE == plot->get_data(&axis_size, nullptr, nullptr)) { std::vector<float> x_values(axis_size); std::vector<float> y_values(axis_size); plot->get_data(nullptr, x_values.data(), y_values.data()); }

Error Codes:

• DVS_NONE: No error
• DVS_NO_DATA: Object has no data, should not happen through DVS Reader API
• DVS_PARAM_NULL: All parameters are null. Method will do nothing.
• DVS_INVALID_CACHE: Loading cache failed, possibly invalid cache or invalid permissions
• DVS_DATA_FAILED_LOAD: There was a failure loading data, data is either empty or missing
• DVS_INVALID_HASH: Hash of variable data is invalid. There is a problem with the data

Parameters

[out]	num_values	if not nullptr returns the number of values for each axis
[out]	x_axis_values	if not nullptr the x axis values, must be of size num_values
[out]	y_axis_values	if not nullptr the y axis values, must be of size num_values

Returns

dvs_ret DVS_NONE on no error, see the method description for errors

Get the plot definition this plot chunk is associated with.

Returns

const DVS::IObject* the object definition

Get the rank for the plot.

Plots are generally sent by 1 rank. Specific plots can be sent from different ranks but across ranks only 1 rank should send plot data for a specific time and plot.

Returns

uint32_t the rank this plot is assocaited with (zero based)

Get the time for this plot.

Returns

float the time this plot is associated with