Maximum number of y-axis tick labels to render.
<insightdock/cartesian_chart.h>
int max_y_labels = 0;
When 0 (default), the renderer uses ~6 ticks (the historical default). Set to e.g. 12 to request a denser y-axis. Setting both min_y_labels and max_y_labels to the same value instructs the renderer to attempt exactly that many labels.