Thanks, Daniel. I think my question was not fully clarified.
I am not trying to format the dates, I am in fact passing already formatted
data. But because I need to Pan/Zoom via explorer option, I am
encountering an issue of sorts.
When I do change the data to numeric sequence (printing the formatted dates
with format values) I need to do the same with Ticks. I do NOT, however,
want the number of ticks to match then number of data points.
I can accomplish something like this:
`
ticks: [
{ v: N, f: 'mm/dd/YYYY'}, ... { v: N', f: 'mm/dd/YYYY'} }
]
`
Where [N..N'] will be a subset of data points that match IDX % (MAX(IDX)/5)
== 0 for about 20% of data points.
But when zooming happens, the number of thus specified ticks remains fixed
and they scroll outside of the view, but I always want to show the same
number of them.
So either there is a callback for completion of Pan/Zoom operation that I
could use, or I would be able to specify a formatter function to manually
compute Tick value format based on the DataVew's data set.
Is there such a thing?
On Friday, July 28, 2017 at 11:13:02 AM UTC-4, Daniel LaLiberte wrote:
>
> You can't specify a date format in the options, but you can do the
> formatting yourself outside of options using a DateFormat with the
> formatValue() method. See:
> https://developers.google.com/chart/interactive/docs/reference#dateformat
>
>
> On Fri, Jul 28, 2017 at 10:20 AM, vlad <[email protected] <javascript:>>
> wrote:
>
>> I am currently using the following code to format my data tick labels:
>>
>> `
>> hAxis: {
>>
>> gridlines: { count: 15 },
>> slantedText: true,
>> slantedTextAngle: 45,
>> ticks: [{v: *1*, f: "1/1/2003"}, {v: *2*, f: "1/5/2003"}, ..., {v: *1*, f:
>> "#/#/####"}]
>>
>> }
>>
>> `
>>
>>
>> The reason for that is I am trying to create a continuous axis that shows a
>> Date Series on a ColumnChart without displaying weekends.
>>
>>
>> The solution works, but (naturally), the number of ticks shown is fixed.
>> Had the chart not needed Pan/Zoom functionality, I wouldn't bother, but with
>> zooming, even a simple algorithm to keep the number of ticks reasonable
>> fails.
>>
>>
>> Is there any way to just specify a formatter function instead of writing
>> `ticks: [{f: 'FORMAT'}]`?
>>
>>
>> Any help on this would be much appreciated.
>>
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>
>
> --
> Daniel LaLiberte <https://plus.google.com/100631381223468223275?prsrc=2>
> [email protected] <javascript:> 5CC, Cambridge MA
>
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