highstock - Highcharts : How do i align data labels above the axis in column chart? -


i plotting values dynamically in highcharts column charts. have displayed data labels -90 degree rotation avoid overlapping. has issues values cut off axis.
have tried y offset option. values plotted dynamically. couldn't set value fixed one.
js fiddle : a link

highcharts.chart('container', { chart: {     type: 'column' }, title: {     text: 'world\'s largest cities per 2014' }, subtitle: {     text: 'source: <a href="http://en.wikipedia.org/wiki/list_of_cities_proper_by_population">wikipedia</a>' }, xaxis: {     type: 'category',     labels: {         rotation: -45,         style: {             fontsize: '13px',             fontfamily: 'verdana, sans-serif'         }     } }, yaxis: {     min: 0,     title: {         text: 'population (millions)'     } }, legend: {     enabled: false }, tooltip: {     pointformat: 'population in 2008: <b>{point.y:.1f} millions</b>' }, series: [{     name: 'population',     data: [         ['shanghai', 2341.7],         ['lagos', 165.1],         ['istanbul', 14.2],         ['karachi', 14.0],         ['mumbai', 12.5],         ['moscow', 12.1],         ['são paulo', 11.8],         ['beijing', 11.7],         ['guangzhou', 11.1],         ['delhi', 11.1],         ['shenzhen', 10.5],         ['seoul', 10.4],         ['jakarta', 10.0],         ['kinshasa', 9.3],         ['tianjin', 9.3],         ['tokyo', 9.0],         ['cairo', 8.9],         ['dhaka', 8.9],         ['mexico city', 8.9],         ['lima', 8.9]     ],     datalabels: {         usehtml:true,             crop:false,         enabled: true,         rotation: -90,         color: '#000000',                   inside:true,         style: {             fontfamily: 'verdana, sans-serif',             fontweight: "bold"                 , fontsize: "15px"         }     } }]

});
`

<div id="container" style="min-width: 300px; height: 400px; margin: 0 auto"> </div> <script src="https://code.highcharts.com/highcharts.js"></script> <script src="https://code.highcharts.com/modules/exporting.js"></script>

`

try set yaxis type logarithmic, , minortickinterval 0.1. logarithmic scale fits type of data perfectly. lets @ code below:

yaxis: {     type: 'logarithmic',     minortickinterval: 0.1,     title: {         text: 'population (millions)'     } },

here refactored jsfiddle: https://jsfiddle.net/daniel_s/x5oxyt2v/

best regards!


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