Search found 132 matches

by SteveP
Fri Apr 20, 2007 5:48 pm
Forum: VCL
Topic: Drawing surface chart - cpu intensive - misses timer events
Replies: 2
Views: 3166

Are you using the Multimedia timer ? I have found with XP (and maybe 2000) that at 10 Hz its callback function does not get missed even when opening several large applications or dragging a window around or minimizing a window. Earlier OS's or the standard Delphi Timer often have missed periods last...
by SteveP
Fri Jan 26, 2007 2:06 pm
Forum: Beta versions
Topic: Teechart Version 3 .NET Cursor Performance
Replies: 20
Views: 48975

I use cursors with VCL in WIN32 and do not know if the following applies to the .NET version. When the cursor moves, is the matching data point being searched for ? If so, I believe the VCL version always starts it search from the begiining of the data values list. It seems a quicker approach would ...
by SteveP
Fri Jan 19, 2007 2:18 pm
Forum: VCL
Topic: Zooming boundaries...
Replies: 11
Views: 8383

Marjan, Wish list : could both your suggested behaviors (do not allow user to begin a zoom if they are outside the chart's inner rect and do not allow the zoom box rectangle to be dragged outside the chart's inner rect) be made a settable property of a chart ? Something like RestrictZoomToInnerRect ...
by SteveP
Wed Jan 10, 2007 5:58 pm
Forum: VCL
Topic: Insert TeeChart into Excel through OLE
Replies: 8
Views: 8145

Narcis,

Can you explain how to import a .tee file into Excel ? I do not see a tutorial on how to do that.

What is the advantage of importing a .tee vs an image ? Will the .tee be resizable in Excel for example ?

Thanks,

Steve
by SteveP
Thu Dec 21, 2006 7:55 pm
Forum: VCL
Topic: Nearest Point tool has bad performance for big series
Replies: 10
Views: 8216

I ahve not looked in the source code, but does the Nearest Point tool always begin its search from the beginning or end of the data array ? If not, it might be faster to begin from the previous nearest point index and search away from that in both directions. This assumes linearity in values.
by SteveP
Tue Dec 12, 2006 1:28 pm
Forum: VCL
Topic: [Bug report] "Crazy" cursor tool
Replies: 4
Views: 4496

FollowMouse and Snap are set True. for i := 0 to 100 do series1.AddY(10000 + random(60000)); As the cursor is moved say slightly up along the Y axis, the cursor's X position might jump far away from its current position. This is because there is another X,Y pair whose Y data value is nearer to the n...
by SteveP
Mon Nov 06, 2006 1:26 pm
Forum: VCL
Topic: Custom Labels
Replies: 1
Views: 2443

In the New Features Demo, see What's New tab > New in Axis > First and Last Labels

Steve
by SteveP
Mon Sep 25, 2006 2:23 pm
Forum: VCL
Topic: TeeChart v8 VCL Beta Released
Replies: 58
Views: 39204

Got it and looking forward to seeing what's new.

Steve
by SteveP
Mon Sep 25, 2006 12:32 pm
Forum: VCL
Topic: TeeChart v8 VCL Beta Released
Replies: 58
Views: 39204

I would very much like to beta test. I have beta tested versions 5 and 6, appreciated seeing my suggestions and bug reports implemented and would like to see this new release as bug free and its new features as fully developed as possible out-the-door. I am quite detail oriented and picky, use TChar...
by SteveP
Wed Sep 06, 2006 3:53 pm
Forum: VCL
Topic: HorizLine series PDF Export always shows OutLine and LinePen
Replies: 5
Views: 4523

I've discovered that the same bug exists in Postscript Export.
by SteveP
Tue Sep 05, 2006 12:54 pm
Forum: VCL
Topic: Setting same ChartRect for two charts
Replies: 5
Views: 5303

How about directly assigning values to chart1.ChartRect.Left, etc. and make the two charts the same. This fixes the inner axis bounding region, so if axis label size changes with data value, the position of the inner region will remain fixed.
by SteveP
Tue Sep 05, 2006 12:51 pm
Forum: VCL
Topic: Tcolorgridseries and speed
Replies: 5
Views: 4659

Sean,

A faster option is to prepare a bitmap from your data 2D array and assign it to the chart's BackImage. You do have to deal with issues such as whether several data points span more than one bitmap pixel or not.

Steve
by SteveP
Thu Aug 03, 2006 2:17 pm
Forum: VCL
Topic: Color Line with Marks Tips
Replies: 2
Views: 3005

Perhaps use a CursorTool with Snap = false and respond to its OnChange event. Note that with Snap=false, the OnChange event's ValueIndex will = -1. Maybe use another hidden CursorTool with Snap = true and check if the two CursorTools XValues are the same. However, the CursorTool with Snap=false has ...
by SteveP
Tue Aug 01, 2006 2:36 pm
Forum: VCL
Topic: CursorTool Z position in Point3D series
Replies: 4
Views: 4500

A NearestPoint tool trackes the correct data value and draws its line to the correct Z Position. It might be used to change the CursorTool's X and Y values to visually make the cursor appear to be located over the correct Snapped position at the correct Z Position. That would require being able to c...
by SteveP
Tue Aug 01, 2006 1:49 pm
Forum: VCL
Topic: CursorTool Z position in Point3D series
Replies: 4
Views: 4500

Is TeeChart Pro v7.08 only available for BDS 2006 ? I am using Delphi 7 and TChart Pro 7.07 which has that ChartTool1.UseSeriesZ property but does not make it follow the Z Position at all. The Z Position never changes.

Steve