Laro88

#include <iostream>
#include <string>
#include <pqxx/pqxx>

std::basic_string<std::byte> randomizer(int size)
{
	std::basic_string<std::byte> n;
	for(int j = 0; j < size; ++j)
	{
		std::byte b;

Laro88

#include <iostream>
#include <string>
#include <ctime>

#include "pqxx/pqxx" //wherever you have the local pqxx superheader - remember to fix your linker as well
 
int lengthByteArray = 10000;
int vectorsize = 10000;  //10K 10K gives a couple of seconds

char* GetRandomByteArrayContent() { //generate the fake data - should include random 0 values (end of char strings)

Laro88

The topic of interest in the "function slice and aggregate...." It solves the problem of plotting {timestamp, value} points, not just adding a new value.

It originates from polling a public api that exposes recorded IoT data. The data received contains the latest value for the inquired sensors, however since the data is timestamped, these should be respected in the plotting.

Notice: The context stores the obtained dataset and adds points if the timestamp is not previously seen. Some memory is wasted maintaining a lookup array that is not used for anything.