sclass rgbMakeGraph_Info {

  // input

  float overdrive = 1f;

  // output

  float min, max;

  public S toString() {

    ret "min: " + min + ", max: " + max;

  }

}

static RGBImage rgbMakeGraph(float[] data) {

  ret rgbMakeGraph(data, null);

}

static RGBImage rgbMakeGraph(float[] data, rgbMakeGraph_Info info) {

  if (empty(data)) ret new RGBImage(1, 1);

  float min = min(data), max = max(min+0.0001f, max(data));

  if (info != null) {

    info.min = min;

    info.max = max;

  }

  int w = l(data), h = 60;

  RGBImage img = new RGBImage(w, h, Color.white);

  Color foreground = Color.red;

  for x to w: {

    float f = (data[x]-min)/(max-min);

    if (info != null) f *= info.overdrive;

    int y1 = max(0, iround(h*(1-f)));

    for (int y = y1; y < h; y++)

      img.setPixel(x, y, foreground);

  }

  ret img;

}