Hi, there.
We're evaluating the jQuery igDataChart and its financial series and are currently having some troubles with its logarithmic Y Axis plotting.
We noticed the chart works well if all prices stay between the same log base boundary. That is, if all prices stay between $1.01 and $9.99 (or $10.01 and $99.99, $100.01 and $999.99, and so on).
Every time the price series crosses any of that base boundaries, labels in the Y axis will only be drawn for such bases (1, 10, 100, 1000, and so on). How can we get the chart to plot Y axis labels normally, like it does on the previous scenario (with no base value crossing)?
Here's an example of the wrong label plotting. The correct label plotting can be attained by changing the Y axis minimumValue and maximumValue to 11 and 99, respectively: http://jsfiddle.net/7SELz/
Thanks, a lot.
Hello Peter,
Sorry for posting it in old thread. As I am facing same LOG issue as explained above. Though you suggested following solution
The suggested solution is to manually detect whether an adjustment in the minimum and maximum values.
Can you please give some detail, how can we adjust min/max value when Log checkbox checked and re-adjust when log checkbox unchecked.
Thank you.
Hello Thiago Me,
Thank you for your reply and feedback ! I have relayed your comments to our engineers.
Please also feel free to suggest this as a new product idea at <http://ideas.infragistics.com>.
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I have attended to your other chart related query at:
http://ko.infragistics.com/community/forums/t/86440.aspx
Feel free to contact me through the forum thread or created support ticket with any updates or questions regarding this matter.
Hi, Petar.
This seems to be a major design flaw, then.
The most particular aspect of a log chart in comparison to a linear one appears when you plot long ranges of data, specially for stock charts showing a company that went from 2 cents to 40 dollars in the course of the years.
Please check with your guys if this can be changed in the future.
Also, I would greatly appreciate if you were to take a look on my other thread, regarding chart s destroy methods.
Hello Thiago,
Thank you for your reply.
In order for labels to be displayed when an axis is logarithmic, the min and max values if set need to fall inside the set log range. This is the behavior of the component by design. Possible approaches to handle this include changing the log base through the axislogratihmBaseoption, or switching the axis to linear mode based on the values present in the datasource.
Please let me know if you need more information regarding this matter.