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On Scale tab, choose Major Ticks or Minor Ticks to be By Dataset, user can type space separated numbers as major/minor ticks.
layer.x.ticksbydata$="10,12,20 28"; //LT script to set major ticks
layer.x.mticksbydata$="11,15,23"; //LT scirpt to set minor ticks
Tick Labels on Minor Tick Indices Only
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