Google Chart with Proportional Y-Axis -


i trying y-axis of stacked google column chart proportional. have tweaked settings , not able work. if max column value 1, there should 1 horizontal grid line. there should not 3 value of 1. doesn't make sense.

here chart options:

var options = {     colors: ['#ba1f1f', '#306b34', '#255f85', '#e28413', '#f24333'],     bar: { groupwidth: "90%" },     chartarea: { left: 50, top: 10, width: '100%', height: '75%' },     legend: { position: 'bottom' },     animation: { startup: true, duration: 250, easing: 'linear' },     isstacked: true,     haxis: {         slantedtext: true     },     vaxis: {         format: '#'     },     height: 350 };

and here picture of problem:

y-axis problem

does have suggestions on how fix this? thanks!

update @whitehat's suggestions:

i tried suggestion. didn't work. here result if set explicitly , not based on column range max.

enter image description here

the total count 8 column 7. 7 4 , 6 1. have other data manipulation count total number per column in stacked column chart , find max not explicitly set gridlines count. after can working correctly.

you can add following option when max column value 1 

vaxis: {     gridlines: {         count: 2  //<-- default 5     } },

or add decimals format : '#,##0.00' avoid repeating 1

you can use data table method check max column value 

data.getcolumnrange(columnindex).max

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