charts - Highcharts:Heatmap not show rectangle when single data-point -


i plotting heatmap using highcharts. when there many data data-points works when there signle point :[[1.4409601e12,0,92]] fails show rectangle of heatmap. on hovering show value in tooltip doesn't render heatmap. observed in console of developer tool of chrome shows there plotted x cordinate -2073599976 , when made 0 on browser's inspect element console started appearing on code side unable locate make change. when there 2 or more points x sets 25 or 26 , plots well.

any solution great help.


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