weatherstation | Personal weather station built with a Particle Photon | REST library

I have a few linecharts all pulling data from MariaDB, which is populated from my Rpi Zero weatherstation. So far i have had a secondary yaxis for displaying todays highest and lowest values, but I would rather have it placed as 2 lines in the topleft corner of the charts. I have been trying several approaches found here and on chartjs documentation, but to no avail. How would I go about it to make the below code show text on the canvas?

I am using .Net Core Entity Framework for a test application for a sciene experiment.

I have the following model that is used in one of our EF controllers.

This model has a computed property called fuelBurnPerSecond that uses other properties for a calculation.

This computed property is not in the database(and I can't add it because it's a very old DB).

Anyway, when I hit the controllers GET method to get a list of all the RocketTestProtocols, I don't see fuelBurnPerSecond in the returned JSON. I see everything else, but not the computed property.

I am getting no error though.

Here is the model:

I have build a custom clock / weatherstation. But for a couple of purposes I wanna be able to run timers inside my code. I have done this many times before in C++ with the SDL lib (SDL_GetTicks()). And I know I can get ticks the same way in the Arduino IDE by using millis().

So I just copy pasted my code for a previous timer class I used for SDL programs and just replaced the SDL_GetTicks() with millis().

However, now it says millis() is out of scope. Which I dont understand? Am i not allowed to use millis inside member variables?

I am trying to log entries from my weatherstation. I can gather the data I need in a pandas dataframe, but I have to convert it to a specific list format to append multiple inputs to a google sheet using Gspread.

The dataframe.to.list() function gives me this format:

[[18, '2020-12-29 00:59:44'], [17, '2020-12-29 01:59:45'], etc.

However the append function to Gspread requires this format:

inputdata = ["17", "2020-12-29 01:59:45"]

and I believe that I can only enter one list item at a time.

I love to get some help regarding how to convert the list format to the specified Gspread format and how to append all data points in an automated way. My limited knowledge believes a For loop is required for this.

Could anyone help me how to handle observer pattern and SpringBoot @Service?

Let's imagine I have class:

I asked here how I should handle the situation when I need to inform observers only when specific attribute of object changes.

I received very nice reply with reference to GoF where is written:

Blockquote Specifying modifications of interest explicitly. You can improve update efficiency by extending the subject's registration interface to allow registering observers only for specific events of interest. When such an event occurs, the subject informs only those observers that have registered interest in that event. One way to support this uses the notion of aspects for Subject objects. To register interest in particular events, observers are attached to their subjects using

void Subject::Attach(Observer*, Aspects interest);

Blockquote where interest specifies the event of interest. At notification time, the subject supplies the changed aspect to its observers as a parameter to the Update operation. For example:

void Observer::Update(Subject*, Aspect& interest);

This makes sense and I would like to ask how to correctly implement this in Java. I have few ideas but I am not sure if there isn't something better.

Let's imagine I have subject class WeatherStation[temperature, humidity, windSpeed ...] and I have observer class LimitedDisplay[show (shows only temperature and humidity) and for some reason I need that the display should be able to differentiate when only temperature was changed and when only humidity was changed.

I was thinking that I could create some enum WeatherStationInterest[TEMPERATURE, HUMIDITY WIND_SPEED...] and then have the subject interface like this:

I would like to ask how I should correctly implement observer pattern when I need to achieve something like this:

I learnt very recently how to use data-driven testing in Ready API and loop calls based on the data. My goal is to run the steps in loop and at the end create an auto-export facility with DataSink so that the results get auto exported.

Now when I try go to DataSink, as I understood I need to create column headers as below

to store the corresponding child values

It would work well, if the soap response for each of the siteId has the same XML structure. But in my case each of the 2000+ response that I get has different number of children within

In the 2 similar methods with measure in their name, they output the data that I want to have output in the last method many times. But if I try to simply call them in the last method the message does not work anymore. I also have another class with a main method where I create an object that calls the last method as many times as needed. Here is the code.