Fix tick spacing calculation (#6761)

diff --git a/src/core/core.scale.js b/src/core/core.scale.js
index 5b59f348d2bf863a1ecc60ba6d2b994bf81d83f0..414e88b006a440ceb5160d7f6db73c87aa598d02 100644 (file)
--- a/src/core/core.scale.js
+++ b/src/core/core.scale.js
@@ -242,7 +242,7 @@ function getEvenSpacing(arr) {
 
 function calculateSpacing(majorIndices, ticks, axisLength, ticksLimit) {
        var evenMajorSpacing = getEvenSpacing(majorIndices);
-       var spacing = (ticks.length - 1) / ticksLimit;
+       var spacing = ticks.length / ticksLimit;
        var factors, factor, i, ilen;
 
        // If the major ticks are evenly spaced apart, place the minor ticks