fix issue #422

[gilbertogalvis]

This PR fix the issue #422

To fix this I have proposed a new optional parameter called 'DomainFactor'. This parameter scales each of the domain components of the plotly chart.

The domain or position of a chart box is defined by a 4-element vector, namely:

domain = [xo, yo, w, h]
where:

• xo: the initial x-coordinate of the chart (referred to the left-bottom)
• yo: the initial y-coordinate of the chart (referred to the left-bottom)
• w: is the width of the chart
• h: is the height of the chart

Then the 'DomainFactor' parameter must be a vector of 4-elements at most, in which each of its elements will scale to each of the elements of the chart's domain.

Example: Without scaling

rng('default')
X = rand(10,3);

tree = linkage(X,'average');

dendrogram(tree)

fig2plotly(gcf);

In this example we have not set the optional DomainFactor parameter, therefore, the domain of the chart will not be scaled, which will result in:

Example: set DomianFactor to scaling

rng('default')
X = rand(10,3);

tree = linkage(X,'average');

dendrogram(tree)

domainFactor = [0.2, 1, 0.9, 0.9];
fig2plotly(gcf, 'offline', offline, 'DomainFactor', domainFactor);

In this case we have set the 'DomainFactor' parameter as [0.2, 1, 0.9, 0.9] and like this:

• xo will be scaled by a factor of 0.2
• yo will scale by a factor of 1 (it will stay the same)
• w: the width of the chart will be scaled by a factor of 0.9
• h: the height of the chart will be scaled by a factor of 0.9

Here I share the result: