Comments on: About me

By: Roman

Roman — Tue, 23 Apr 2013 13:42:24 +0000

yep, it worked :)
no-store binding, populating series with pairs of {x:value, y:date} and setting
xAxis : {
type: ‘datetime’,
….

Thank you!

By: Joe Kuan

Joe Kuan — Tue, 23 Apr 2013 01:35:05 +0000

Highcharts supports numerical x-axis and other options for formatting date time values, such as formatter and dateTimeLabelFormats. The online demo ‘Line Shift – numerical x-axis’ illustrates how to format numerical x-axis values.

xAxis : {
type: ‘datetime’,
title : {
text : ‘Time’
}
}

By: Roman

Roman — Mon, 22 Apr 2013 22:28:56 +0000

tried passing
1. [date,value] (Highcharts doesn’t see the date – x marks are from 0 to…number of values)
2. ["time":date,"value":value] with specifying xField:’time”
3. for 1st series created in memory store to use bindStore and then load the rest series using addSeries

none worked :-(

By: Roman

Roman — Mon, 22 Apr 2013 14:30:06 +0000

even if x1,x2,x3,.. are dataType;’date’ ?

By: Joe Kuan

Joe Kuan — Sat, 20 Apr 2013 23:35:02 +0000

The extension allows you to add dynamic series without binding to a store

You can try to use addSeries as follows:

addSeries([{
type: 'spline',
data: [ [ x1, y1 ], [ x2, y2 ], [ x3, y3 ], …. ]
}]);

Thanks
Joe

By: Roman

Roman — Fri, 19 Apr 2013 22:48:01 +0000

Joe,
Your extension + highcharts is the only combination I found that allows me to generate charts in ExtJS while dynamically adding series. I have undefined numbers of series which represent data spread over period of time (one of the fields represent date)
Using addSeries() I can compare these series dynamically! But what should I do with x values (date in my case)? Can I control X-values during series generation or is there other workaround?

Tried to make fake store – to bind the chart to. Store has only one field – Time. But it breaks the chart.
Any clue is greatly appreciated!

Thanks,
Roman

By: Joe Kuan

Joe Kuan — Sat, 26 Jan 2013 10:56:04 +0000

1. No, current the extension doesn’t support multiple stores. Partly, I don’t get many feature requests on this issue. If you really have to use multiple stores, then I suggest you use addSeries with ‘data’ option that are extracted from those store.on(‘load’). Assume you have a refresh button, then you reload all those stores together and call the internal chart API functions setData.

2. Sorry, I don’t really follow this. I think you need to point me to particular section of your code and guide me through your online demo.

3. x axis range should be configured via Highcharts configuration section.

4. Yes, you can mix lines and scatter in one chart and I don’t see any problem doing that with the extension. What do you mean by ‘too different’? The data model/definition or the value range?

PS: Email me via kuan.joe@gmail.com, as this may require quite a few exchanges.

Thanks
Joe

By: Frank

Frank — Wed, 23 Jan 2013 12:50:43 +0000

Sure, any help is welcome!
The following is a pure Highcharts sample what I am trying like to achieve:
http://www.hasensprung.org/myETA/chart.html

The following what I have right now:
http://www.hasensprung.org/myETA/app.html

Best,
Frank

By: Joe Kuan

Joe Kuan — Wed, 23 Jan 2013 12:44:25 +0000

Sorry, extremely busy right now. I will try to give u some answers in the weekend

By: Frank

Frank — Tue, 22 Jan 2013 09:59:54 +0000

Hi Joe, I started using your Highcharts Sencha adapter in a small project. It works fine as long using one single ExtJS store.

For this I have the following questions:
1. Can I use multiple stores and define per serie what store to use?
2. When loading a store, I tried to figure out how I can assgin an Y value to a specific value on the X axis. Although trying to use “xField” I never managed, data from the serie always gets assigned to the [0] index on the x Axis
3. As well I tried to setup x Axis wit a range from -20 to +30. Again I was not able to assign data starting by -20
4. I would like to mix lines and scatter in one chart. I think this will only be feasible by using multpil stores since the data is too different…?

It’s not a secret, so you may check the details in the website link of this post.

Thank’s a lot for your help,
Frank