I am looking for a formula to calculate the tick range for a negative tick.
Ex1: tick: -15 tickSpacing: 10 range: [-20, -10) Ex2: tick: -20 tickSpacing: 10 range: [-20, -10)
I was trying this formula
tickLower = tick / tickSpacing * tickSpacing tickUpper = tickLower + tickSpacing
But this not working in the case of -15, it gives [-10, 0), which is not including -20
tickUpper = tick / tickSpacing * tickSpacing tickLower = tickLower - tickSpacing
But this is not giving the right answer for -20, it give [-30, -20), which is not including -20
Someone knows a formula which works in both cases?