Zoom In Feature

[Abhijit]

Hi,

 

We are facing readability issues when a chart with a cluster of small values and cluster of big values are in same chart. e.g. 1,2,5,15 etc and 23.5K, 34.12MM etc.

 

We want to provide the zoom in functionality for the user to allow him to zoom in into the cluster of small values and cluster of big values.

We tried changing yAxisMaxValue so that user will be able to see the smaller values. It did not work since it cannot be set to a value smaller than the max value in the chart.

 

The zoomline chart is line chart, and it does not allow zoom in in y-direction.

 

Please let us know if we can achieve this through Fusion charts.

 

The Hi-Charts does provide a functionality of y and x axis zooming. Is that possible in fusion chart?

 

Thanks,

Abhijit

[Guest Sashibhusan]

Hi Abhiji,

 

I am afraid, the feature of "zooming in to display small and big values at one chart" which you are looking for, is not supported by FusionCharts XT (except ZoomLine Chart), as of now.

 

However, if it is feasible, you can use logarithmic charts from PowerCharts XT Pack, which uses logarithmic scaling instead of linear scale, to plot the values.

 

For more information on "Logarithmic Charts", please follow the link below:

http://docs.fusioncharts.com/powercharts/Contents/?Log/Overview.html

 

Hope this helps!

[Abhijit]

Hi,

Thanks for your response.

We have tried the log chart, but we are not sure if all our users will be able to understand the log scale.

Another point is, we have 0 (zero) in our data which we want to appear as zero. and that does not appear in log chart as log (0) is -infinity / undefined.

 

Is fusion chart going to provide zoom chart in near future?

Please do let us know.

 

Another approach we thought was to show smaller values by allowing user to set the yAxisMaxValue.

e.g. there are values as 1,2,5,15 etc and 23.5K, 34.12MM etc in the chart, then user would say that he wants to see data in 0 to 100, and we were planning to set the yAxisMaxValue.

But that does not allow, as the yAxisMaxValue does not seem to work if it is set to a value lesser than max data value in the chart.

Can you please suggest any way so that we can clip the chart and show in bottom section only?

 

Thanks,

Abhijit

Hi Abhiji,

 

I am afraid, the feature of "zooming in to display small and big values at one chart" which you are looking for, is not supported by FusionCharts XT (except ZoomLine Chart), as of now.

 

However, if it is feasible, you can use logarithmic charts from PowerCharts XT Pack, which uses logarithmic scaling instead of linear scale, to plot the values.

 

For more information on "Logarithmic Charts", please follow the link below:

http://docs.fusionch...g/Overview.html

 

Hope this helps!

[Guest Sashibhusan]

Hi Abhijit,

 

Currently this is what we have to offer you.

 

If feasible, we will add this "zooming" feature in the our wishlist.

 

However, as per your alternate approach, if the user wants to see data in 0 to 100, you could do that by setting "yAxisMaxValue" attribute to 100 and discard the data points which are greater than 100, from the chart XML/JSON data and then update the entire new XML/JSON data to the chart.

 

For more information on "Providing and Updating Chart Data > Updating an existing chart", please follow the link below:

http://docs.fusioncharts.com/charts/contents/?JavaScript/JS_ChangeData.html

 

Hope this helps!