Dear team,

I need to draw linear/exponential trend lines in a Bar chart. Currently, I find NFunctionCalculator class, I think it may help me do this. But I do not know how to write the correct expression or the grammar of the expression. Would you please show me the grammar of the expression?

Another question is how can I draw a fold line in a bar chart? Now I have a series of points with their Y coordinates and their corresponding bar. e.g. Point A: Y=13, and X equals to where bar 3 lies.


Await your early reply!

Thank you in advance!

Hi,

The expressions for the NFunctionCalculator are explained in the following topic:

http://helpdotnetvision.nevron.com/UsersGuide_DataManipulation_Functions_Functions_Overview.html

 

Regarding your second question - what do you mean by "fold line in a bar chart"?

Best Regards,
Nevron Support Team

Thank you for your reply.

A fold line means a line that is running through several data points.
I find that I cannot specify the X coordinate of a point in bar chart, since it will always map the point to the first bar, second bar; or when it is clustered bar, it goes to the first cluster, second cluster.

would you please help on that?

Many thanks

Hello,

Most of the series (including NBarSeries) have an UseXValues property - you have to set this to "true" and then fill the X values in the XValues data series. You can take a look at the following examples:

All Examples > Chart Gallery > Bar > Date Time Bars
All Examples > Chart Gallery > Bar > XYZ Scatter Stack
All Examples > Chart Gallery > Bar > XYZ Scatter Cluster
All Examples > Chart Gallery > Line > XY Scatter Line

Best Regards,
Nevron Support Team