Question

I’m using the google visualization charts api but I believe this is some kind of javascript mistake I am making. I populate this array with numbers:

visibleRows = [];

And make it a comma delimted string:

visibleRows.join(',');

console.logging visibleRows after this gives:

0,1,3

But when I feed visibleRows into the function the very next line:

pieViewHits.setRows([visibleRows]);

I get the error: Invalid row index 0,1,3 Should be in the range [0-3] BUT if I replace all the above code with just:

pieViewHits.setRows([0,1,3]);

It works perfectly! Any ideas?

Answer 1

[0,1,3] is an array containing three numbers

visibleRows.join(','); returns a comma delimited string. You aren’t assigning it anywhere, so it doesn’t do anything.

[visibleRows] is an array containing a second array that contains three numbers in turn. It will be flattened to a comma delimited string if used in a string context.

The function expects an array containing three numbers, not an array containing another array or an array containing a comma delimited string.

Just pass the array without wrapping it in another array or joining it.

visibleRows = [];
visibleRows.push(0);
visibleRows.push(1);
visibleRows.push(3);
pieViewHits.setRows(visibleRows);