Trial Version is for evaluation purposes for up to 30 days. To use charts without ‘Trial Version’ and ‘CanvasJS’ Credit Link you will need to have a Commercial Version of CanvasJS. Please contact sales@canvasjs.com for sales related queries.
To zoom into a certain region, a minimum of 3-4 dataPoints are required. This is an intended behavior so that the user doesn’t end up zooming into a blank region(a region with no dataPoints).
The rendering of charts differs across browsers as they all use different engines to render web pages. Please have a look at this wiki page on Comparison of Web Browser Engines.
Can you let us know if you are looking for something similar as shown in this example? If not, can you please brief us more about your requirements so that we can understand your scenario better & help you out?
Sorry, vertical margin between the legend items is not available as of now. But, you can align the legend items horizontally using itemWidth.
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Suyash Singh
Team CanvasJS
Are you looking for multi-series stepLine chart? If not, can you please provide us with some pictorial representation so that we can understand your requirements better & help you out?
Kindly create a working jsfiddle along with sample data so that we can look into the code and help you out. Also you can have a look at this jsfiddle on creating Chart from JSON.