I have a range of values like, for example, [0, 100] = [minValue, maxValue]
and the number of bands, for example BANDS_NUMBER = 5
.
So I can obtain these bands:
[0 - 20]
[21 - 40]
[41 - 60]
[61 - 80]
[81 - 100]
Then I want to associate a scale value at each range:
i: 0 --> [0 - 20] --> 0.2
i: 1 --> [21 - 40] --> 0.4
i: 2 --> [41 - 60] --> 0.6
i: 3 --> [61 - 80] --> 0.8
i: 4 --> [81 - 100] --> 1
This value is computed in this way: (i + 1) / BANDS_NUMBER
where i
is the index of a hypothetical loop.
Then I have an input n
whose value is in range [minValue, maxValue] = [0, 100]
.
What I want is the scale value related to this number.
So, for example, if:
n = 0 --> scaleValue = 0.2
n = 10 --> scaleValue = 0.2
n = 20 --> scaleValue = 0.2
n = 35 --> scaleValue = 0.4
n = 68 --> scaleValue = 0.8
n = 99 --> scaleValue = 1
...
How can I create a function like that? I imagine a function like that:
function map(n, minValue, maxValue, bandsNumber) {
const scaleValue = ...
return scaleValue
}
All the values here are examples, I want that all works with any other values.
I don't know how to do to that. I need some help...
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