public StringBuilder toString(StringBuilder sb, String[] fs, long idx) {
Vec vecs[] = vecs();
for (int c = 0; c < fs.length; c++) {
Vec vec = vecs[c];
if (vec.isEnum()) {
String s = "----------";
if (!vec.isNA(idx)) {
int x = (int) vec.at8(idx);
if (x >= 0 && x < vec._domain.length) s = vec._domain[x];
}
sb.append(String.format(fs[c], s));
} else if (vec.isInt()) {
if (vec.isNA(idx)) {
Chunk C = vec.elem2BV(0); // 1st Chunk
int len = C.pformat_len0(); // Printable width
for (int i = 0; i < len; i++) sb.append('-');
} else {
try {
sb.append(String.format(fs[c], vec.at8(idx)));
} catch (IllegalFormatException ife) {
System.out.println("Format: " + fs[c] + " col=" + c + " not for ints");
ife.printStackTrace();
}
}
} else {
sb.append(String.format(fs[c], vec.at(idx)));
if (vec.isNA(idx)) sb.append(' ');
}
sb.append(' '); // Column seperator
}
sb.append('\n');
return sb;
}