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Touchgfx graph elements how to add points to graphs with multiple elements

Garnett.Robert
Senior III

Hi

I wish to display two variables on a line graph.

I create the graph in the TouchGFX deigner with Line1 and Line 2.

However I cannot work out how to set add points to the graph.

I used the method:

/**************************************************************/
void Screen1View::handleTickEvent()
{
    tickCounter++;
 
    // Insert each second tick
    if (tickCounter % 3 == 0)
    {
        float yMax = graph1.getGraphRangeYMaxAsFloat();
 
        // Insert "random" points along a sine wave
        graph1.addDataPoint((int)(Detector_Y.NormOp * 50 + 50));
    }
}

In my Screen1View.cpp file, but it adds the same point to both lines.

There doesn't seem to be a method that adds points to the graph elements.

How do I do this?

Do I need two seperate graph widgets overlayed?

Best regards

Rob

9 REPLIES 9
MM..1
Chief II

Do I need two seperate graph widgets overlayed?

I mean yes

UNiko.1
Associate II

It's just unrealistically weird! Why is there no functionality that allows drawing many trends on one chart ?!

Developers, overlapping widgets are crutches, and we (users) are not disabled!

UNiko.1
Associate II

If sometime this functionality is added (if it is not ..), please throw a sneaker at me! =)

Maybe you can write your own code for this. Previous versions dont have any graphs...

Example code STM32CubeF7/Graph.hpp at master · STMicroelectronics/STM32CubeF7 · GitHub

Thanks for the lightning fast response.

I am a noob and I hardly have the ability to write one of the modules of such a large development environment with high quality ..

Thanks a lot for the link, I didn't know that ST is on the github!

They use version TouchGFX 4.10.0 in the examples. I have version TouchGFX 4.16.0 . Everything has changed a lot ... I hope that in the new version everything will not change so much ..

Hi,

Could you add this idea to the Idea Zone of this forum ? This will help us keep track of this 👍 .

/Romain

UNiko.1
Associate II

Hi,

I added this idea to the Idea Zone ("Add the ability to draw several elements on one chart (for example, 6 trend lines)"). Thanks for your feedback!

@Romain DIELEMAN I wonder if this feature has been added yet