How to use viewport on dates

[mitul]

I have a column chart displaying units of electricity used every day on the y axis and the date in dd-mm-yy format on x axis. The data logger sends in all the data at once(for the whole year). So i have a very cluttered chart which i need to zoom manually to see properly. How can I zoom it in program to view only the last months data and then pan left to view the remaining dates?

[Vishwas R]

Mitul,

You can use viewportMinimum and/or viewportMaximum to zoom to a specific region by default or to handle zooming programmatically.

[mitul]

Thanks for the reply. But can you please tell me how to use viewportminimum/maximum with dates. Suppose i want to display only the current months data from a total dataset of the whole year. The date format displayed on x axis is dd-mm-yy.

[Vishwas R]

Mitul,

You can set viewportMinimum to one month less than the last dataPoint. Here is an example.

[mitul]

Thanks Vishwas. Will try it out.

[mitul]

Works great. Thanks.