Search found 5 matches

by Simon
Thu Jan 22, 2009 7:03 am
Forum: VCL
Topic: Delta/Difference Function?
Replies: 1
Views: 2379

Delta/Difference Function?

Hi,

I have a dataset with a list of distances (expressed in metres). Is there a way to chart the difference between point1-2, point2-3 and so on? Ideally i would like a histogram - plotting delta distance.

If i have to do this manually then so be it.

Simon
by Simon
Wed Aug 06, 2008 6:26 am
Forum: VCL
Topic: Probably Stupid Question - Calculate Y from X
Replies: 1
Views: 3243

Probably Stupid Question - Calculate Y from X

Hi, Im using a FastLine series to plot Yvalues over time. So bottomaxis = TdateTime. Is there a way to get a particlar YValue from any give xvalue??? NOT an x-index but a tDateTime. There may not necessarily be a Yvalue for the requested time-> in this case it should extrapolate the information Ive ...
by Simon
Fri Jan 11, 2008 5:22 am
Forum: VCL
Topic: TChart AddXY behaviour and onClick events
Replies: 3
Views: 4403

Found a problem

Hi there, I have now noticed that the value i set at design time for XValues.Order is NOT remebered. Every time i shut down Delphi and then reopen my project, the Order is Set to ioAscending. I think this may be the cause of my problems. For the time being i have set the order to loNone in the forms...
by Simon
Fri Jan 11, 2008 12:46 am
Forum: VCL
Topic: TChart AddXY behaviour and onClick events
Replies: 3
Views: 4403

File Uploaded

I have created a sample project for you to run and uploaded to the steema server. Please read the README.txt for usage.

This is using TChart 6.01.

Thanks

Simon
by Simon
Thu Jan 10, 2008 8:30 am
Forum: VCL
Topic: TChart AddXY behaviour and onClick events
Replies: 3
Views: 4403

TChart AddXY behaviour and onClick events

Hi all, Im using Tchart 6.01 Ive just been trying to debug my prog and running into trouble. I have a function that adds a number of points to a point series using AddXY(). I add all the points and also grab the result from the function - im assuming this to be the actual index of the point in the s...