Recipe 5 — Custom Grid Colors and Themes

Grid colors are part of the plot's meaning, not just decoration. This recipe shows how to set label, minor-grid, and major-grid colors so a plot can match a dark lab environment, domain convention, dashboard theme, or presentation capture. See Plot Styles.

Recipe 5 — dark-theme grid with pale labels

#include <ViewPoint.h>
using namespace viewpoint;

void setup() {
    view.begin();
    view.setTitle("Dark Theme");
    view.setVerticalRange(-2.0, 2.0, 0.2, 1.0);
    view.setAxisLabels("Time", "Signal");
    view.setGridColors(colors::LightGray, 0x2A2A2A, 0x4A4A4A);
    view.trace("Signal").setColor(colors::Cyan);
}

void loop() {
    view.addData("Signal", sin(millis() / 200.0f));
    view.send();
}

What the functions do

• setGridColors(labels, minor, major) sets axis-label color, minor gridline color, and major gridline color.
• The two-argument overload, setGridColors(minor, major), changes gridlines without changing label color.