Heat map in a box to represent level of disorder in a protein.

[ofutip2001]

Hello everyone! I would appreciate any help you can offer! I have different proteins of different lengths, and I want to make representations of the level of disorder along the amino acid positions of the protein. I have tables with the values (from 0 to 1) of disorder in order for each aminoacid. For example, if I had a protein with four aminoacids with the first two being very disordered and the last two being not disordered, my set of values for that protein would look like [0.98, 0.99, 0.06, 0.07]. I want a script that, when I input this set, would produce a box with a width in pixels equal to the number of values (4 pixels for a protein of 4 aminoacids), and each column of pixels to be colored depending on the value (e.g. white if the value is low and black if the value is high, with greys in between), creating in this way a type of heatmap box representation of the protein where the color indicates the level of disorder. This is what I have so far but it isn't working. I don't know if I should approach this in a different way? I am new to JavaScript and Illustrator and don't know how to go about it, thank you in advance!

[femkeblanco · Accepted solution]

function drawHeatmapBox (values) {
    var doc = app.activeDocument;

    // box
    var boxWidth = values.length;
    var boxHeight = 100;
    var rect = doc.pathItems.rectangle(- 100, 100, boxWidth, boxHeight);
    rect.stroked = true;
    rect.strokeWidth = 1;

    // columns
    for (var i = 0; i < values.length; i++) {
        var color = new GrayColor();
        color.gray = values[i] * 100;
        var column = doc.pathItems.rectangle(- 100, 100 + i, 1, boxHeight);
        column.stroked = false;
        column.fillColor = color;
    }
}

var values = [0.98, 0.99, 0.06, 0.07];
drawHeatmapBox (values)

[ofutip2001]

Thank you so much! You really helped me! 🙂