Function squareStringMatrix

src/traces/table/data_preparation_helper.js:118–137

(matrixIn)

// fill matrix in place to equal lengths
// and ensure it's uniformly 2D
function squareStringMatrix(matrixIn) {
    var matrix = matrixIn.slice();
    var minLen = Infinity;
    var maxLen = 0;
    var i;
    for(i = 0; i < matrix.length; i++) {
        if(isTypedArray(matrix[i])) matrix[i] = Array.from(matrix[i]);
        else if(!isArrayOrTypedArray(matrix[i])) matrix[i] = [matrix[i]];
        minLen = Math.min(minLen, matrix[i].length);
        maxLen = Math.max(maxLen, matrix[i].length);
    }

    if(minLen !== maxLen) {
        for(i = 0; i < matrix.length; i++) {
            var padLen = maxLen - matrix[i].length;
            if(padLen) matrix[i] = matrix[i].concat(emptyStrings(padLen));
        }
    }
    return matrix;
}

function emptyStrings(len) {
    var padArray = new Array(len);