Hello Alberto

Thank you for your purchase.

Charts don't inherit formats from wpDataTables, so you would need to use wpDataCharts callbacks. On this link you can see how the number format is changed. It's similar for the date format, but I don't have a specific example for that.

• Every chart exposes several options that customize its look and feel. Charts usually support custom options appropriate to that visualization. wpDataChart callbacks allow adding options that are available in Google Charts API, Highcharts API and Chart.js API. 

• All necessary resources are available in charts engines API (depends on which one you use). Every engine has a different approach to chart settings. In wpDataChart callbacks you have to adopt those settings to the wpDataChart object (you can take a look at examples for each engine in our documentation, and also in Support help center). Huge number of examples for any area of programming can be found on stackoverflow.com (typing your problem in google and at the end add "site: stackoverflow.com" and google will search only that website). Also, a lot of examples of charts, chart settings and customization can be found on jsffidle.net (typing in google for example "line chart highcharts jsffidle")
• Please note that using hooks or wpdatatable and wpDataChart callbacks requires certain level of programming skills and included support refers only to advice.

Hi again Alberto

Elementor has "Custom HTML" widget, so you can use that.

Just paste it somewhere on the page - it will not be visible to the public.

Hey Alberto

Sorry for the inconvenience, we have a bug with callbacks.

Please replace the files in these two locations:

wp-content/plugins/wpdatatables/assets/js/wpdatatables/wdt.chartsRender.js

wp-content/plugins/wpdatatables/assets/js/wpdatatables/wdt.chartsRender.min.js

With the files attached to my response. When you replace them, delete cache from your website and browser, and test again. It should work after that.

Hello Alberto

You can't change a numerical column into a date column. It looks like the X axis is an integer, or a string that says "1K", "2K", etc.

That column needs to be the date column in order to change the date format through a callback.

Thanks for clearing that up, Alberto

So, this is what the callback actually does - it changes the date into an integer.

I tried a few variations of the callback, but I couldn't find the correct one to change the date format in the chart. At the moment, you can change the date format in wpDataTables settings, and the chart will follow that (Highcharts will).

I asked one of our developers if he can take a look, and maybe find a callback which you could use, but I don't know if he'll have the time for that. This is a custom solution, and wpDataChart callbacks require some coding skills, so they are not included in the provided support for the plugin. If our developer has time to find the correct callback, I will let you know.

Hello again Alberto

Please try using this Callback:

<script type="text/javascript">
jQuery(window).on('load', function(){
    if( typeof wpDataChartsCallbacks == 'undefined' ){ wpDataChartsCallbacks = {}; }
    wpDataChartsCallbacks[39] = function(obj){
        obj.options.xAxis.labels = {
        formatter: function () {
                return this.value.substring(6,10)
            },
        rotation: 90
      } 
    }
});
</script>

If the date format is 10/05/2001, like in the image, if you're changing it to something else, you'll need to adjust the substring function.

We've added a rotation for 90 degrees, so more dates fit. If you don't like that, please remove it from the callback.

Please let me know if that helps.

You're welcome, Alberto

Glad I could be of service!

If you have any further questions or issues, please feel free to open a new ticket, and we'll gladly help.