How can make a curve in Qt with values from MySQL

nickvan86

Hello Forum,

i have a question about curve´s in Qt. In the docu i don´t find antything. Have anybody a idea that i can do this?
I have a picture from a another software with curve´s.

!http://imageshack.com/a/img849/6493/qilv.png(Curve)!

Salute

Alex from Germany

clochydd

Hi, you can draw curves from your mysql data by using QPainter.
Have a look at the QPainter Class and there are several examples that maybe useful for your task.

vezprog

Qwt is also a great plotting library. I use it for both static and real-time plotting.

http://qwt.sourceforge.net/

nickvan86

[quote author="dvez43" date="1395231338"]Qwt is also a great plotting library. I use it for both static and real-time plotting.

http://qwt.sourceforge.net/[/quote]

Habe you a simple description for use this?

vezprog

"Download":http://qwt.sourceforge.net the project from the website and look at the examples directory. There should be plenty there for you to go off from.

Construct the plot
Add any legends or anything you want to add to the canvas
Set your data points into the plot
Set your plot to auto scale or set the scale to how you want it

The docs are great for it.

nickvan86

I have found a Video by YouTube. Is this the right way to install qwt?
"Youtube":http://www.youtube.com/watch?v=ZqFKwF6q7jQ