histogram vector with deltaN specified

I have a vector x

x = [1.7 2.2 1.7 3.0 2.2]

also I have a deltaN associated with each value in x

deltaN = [0.1 1.0 3.0 0.7 0.7]

How can I instruct Matlab to increase the count in bin corresponding to x(i) by deltaN(i), not 1?

Answer 1

[Image Analyst]

What is deltaN? You can specify the edges of the bins if that's what you're asking about. See the documentation for histogram() or histcounts().

[Viesturs Veckalns]

As N (counts) is the y axis, deltaN specifies how many counts must be added to that bin.

[Image Analyst]

Does anyone else understand this? The number of counts you add to the bin is just the number of counts you add to the bin. And that is done by histogram() or histcounts(), so is there any further problem?

[Viesturs Veckalns]

Instead of adding 1, specify to add 20 or 0.5 to the count

[Walter Roberson]

Count regularly and then multiply the bin counts by your weights.

[Viesturs Veckalns]

1. The histogram will be displayed incorrectly

2. This will require me to count the weights myself

Answer 2

[Guillaume]

There are no weighted histogram function in matlab as far as I know. It's not really hard to implement:

x = [1.7 2.2 1.7 3.0 2.2];
deltaN = [0.1 1.0 3.0 0.7 0.7];

[~, ~, bin] = histcounts(x); %add whichever option you want to histcount
h = accumarray(bin', deltaN')