NSNumberFormatter to display custom labels for 10^n (10000 -> 10k)
- by Michele Colombo
I need to display numbers on a plot axis. The values could change but I want to avoid too long numbers that will ruin the readability of the graph.
My thought was to group every 3 characters and substitute them with K, M and so on (or a custom character).
So:
1 - 1,
999 - 999,
1.000 - 1k,
1.200 - 1.2k,
1.280 - 1.2k,
12.800 - 12.8k,
999.999 - 999.9k,
1.000.000 - 1M,
...
Note that probably I'll only need to format round numbers (1, 10, 1000, 1500, 2000, 10000, 20000, 30000, 100000, ...).
Is that possibile with NSNumberFormatter? I saw that it has a setFormat method but I don't know how much customizable it is.
I'm using NSNumberFormatter cause the graph object I use wants it to set label format and I want to avoid changing my data to set the label.
