Search found 8 matches

by RJCookeSE
Fri Sep 14, 2012 2:32 am
Forum: JavaScript / HTML5
Topic: Change line color in a line chart
Replies: 4
Views: 11878

Re: Change line color in a line chart

Something like the code below. This isn't particularly well-documented, but your question was interesting to me so I spent a little time looking through teechart.js to see what was available. var Y = [{ array of series values } ]; var X = [{ array of series x-axis values } ]; var c = [{ array of HTM...
by RJCookeSE
Wed Sep 12, 2012 1:45 am
Forum: JavaScript / HTML5
Topic: Change line color in a line chart
Replies: 4
Views: 11878

Re: Change line color in a line chart

It looks to me like you cannot reproduce your example chart using a single Line series in the TeeChart. You can make your series' pointers visible and have a condition-based color for each pointer. Alternatively you can use a new Line series for each contiguous stretch of color that you want to disp...
by RJCookeSE
Mon Sep 10, 2012 5:16 pm
Forum: JavaScript / HTML5
Topic: Recovering start point and end point of a line graph
Replies: 2
Views: 7789

Re: Recovering start point and end point of a line graph

The number is a JavaScript Date value defined as "milliseconds since 1970/01/01"
by RJCookeSE
Mon Jul 30, 2012 9:00 pm
Forum: JavaScript / HTML5
Topic: bottom axis ticks/labels only at values
Replies: 2
Views: 7647

bottom axis ticks/labels only at values

Is it possible to have the bottom axis draw ticks and labels only at actual X values? For instance, I'm plotting values for the last day of each month and using Date values as my X values. Necessarily, this means that the X-values are not at regular intervals. I want the axis labels to align with X-...
by RJCookeSE
Fri Jul 06, 2012 4:29 pm
Forum: JavaScript / HTML5
Topic: setMinMax and dates
Replies: 5
Views: 12230

Re: setMinMax and dates

I think I've got it fixed, although I haven't yet gone back to test with other data types in the x-axis. Still, the logic is sound.

In teechart-extra.js, line 315 change

Code: Select all

v=(pp+this.delta-this.bounds.x)*ra/s;
to

Code: Select all

v=this.min + (pp+this.delta-this.bounds.x)*ra/s;
by RJCookeSE
Fri Jul 06, 2012 3:30 pm
Forum: JavaScript / HTML5
Topic: setMinMax and dates
Replies: 5
Views: 12230

Re: setMinMax and dates

I just checked out the demo. You'll notice that when you try to move the range around in the scroller canvas that the behavior I describe still happens. The range snaps to the far left and then you can't move it anymore. I tried this in Chrome, IE9 and Firefox with the same results. I haven't had ti...
by RJCookeSE
Fri Jul 06, 2012 3:23 pm
Forum: JavaScript / HTML5
Topic: setMinMax and dates
Replies: 5
Views: 12230

Re: setMinMax and dates

Thank you, I'll check it out. I also purchased a commercial license so I could trace the code myself.
by RJCookeSE
Mon Jul 02, 2012 8:22 pm
Forum: JavaScript / HTML5
Topic: setMinMax and dates
Replies: 5
Views: 12230

setMinMax and dates

As a long-time customer of the VCL product, I'm very excited about using TChart for HTML5. I'm having some trouble using setMinMax() when the data type of the x-axis values is Date. I was implementing the Scroller tool when I ran into this. I have an array of Date objects retX[]. This array is assig...