The Histogram displays the "Mean " value. Is it possible to get this value from anywhere?

I have looked through Alchemist but cannot seem to see it.

If Alchemist is blind to the Mean, it means you have to calculate it yourself from the histogram.

Say,

```
const histogram = [ /* long array of numbers */ ];
let totalValue = 0;
let totalCount = 0;
for (let i = 0; i < histogram.length; i++) {
totalValue += i * histogram[i];
totalCount += histogram[i];
}
const mean = totalValue / totalCount;
```

2 Likes

Thank you Davide, that is exactly what I am looking for

Is there any reason why the following returns undefined when the image is in GrayScale

```
app.activeDocument.histogram
```

It works fine if the image is RGBColor